chore: release v1.0.17 (#614)

Change-Id: I12f59a72996c9d21dacd5478190a85af765bb1a4

.codecov.yml

@@ -6,3 +6,6 @@ coverage:
     patch:
       default:
         target: 60%
+
+github_checks:
+  annotations: true

.github/workflows/arch-audit.yml

@@ -0,0 +1,116 @@
+name: Architecture Audit
+
+on:
+  schedule:
+    - cron: '0 9 * * 1' # Monday 09:00 UTC
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  audit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Fetch meta data
+        run: python3 scripts/fetch_meta.py
+
+      - name: Dead code detection
+        run: |
+          echo "## Dead Code" >> report.md
+          go run golang.org/x/tools/cmd/deadcode@v0.31.0 -test ./... 2>&1 | tee deadcode.txt
+          count=$(wc -l < deadcode.txt | tr -d ' ')
+          echo "Found **$count** unreachable functions" >> report.md
+          echo '```' >> report.md
+          cat deadcode.txt >> report.md
+          echo '```' >> report.md
+
+      - name: Package complexity
+        run: |
+          echo "## Package Complexity" >> report.md
+          echo "" >> report.md
+          echo "Packages exceeding 2 000 lines or 20 files:" >> report.md
+          echo "" >> report.md
+          echo "| Package | Files | Lines | Deps |" >> report.md
+          echo "|---------|-------|-------|------|" >> report.md
+          found=0
+          for pkg in $(go list ./cmd/... ./internal/... ./shortcuts/...); do
+            dir=$(go list -f '{{.Dir}}' "$pkg")
+            files=$(find "$dir" -maxdepth 1 -name '*.go' ! -name '*_test.go' | wc -l | tr -d ' ')
+            lines=$(find "$dir" -maxdepth 1 -name '*.go' ! -name '*_test.go' -exec cat {} + 2>/dev/null | wc -l | tr -d ' ')
+            deps=$(go list -f '{{len .Imports}}' "$pkg")
+            if [ "$lines" -gt 2000 ] || [ "$files" -gt 20 ]; then
+              echo "| **$pkg** | **$files** | **$lines** | **$deps** |" >> report.md
+              found=1
+            fi
+          done
+          if [ "$found" = "0" ]; then
+            echo "| _(none)_ | | | |" >> report.md
+          fi
+
+      - name: Dependency freshness
+        run: |
+          echo "## Outdated Dependencies" >> report.md
+          echo '```' >> report.md
+          go list -m -u all 2>/dev/null | grep '\[' >> report.md || echo "All dependencies up to date" >> report.md
+          echo '```' >> report.md
+
+      - name: Circular dependency check
+        run: |
+          echo "## Circular Dependencies" >> report.md
+          go list -f '{{.ImportPath}} {{join .Imports " "}}' ./... | \
+            go run golang.org/x/tools/cmd/digraph@v0.31.0 scc 2>&1 | tee cycles.txt
+          if [ -s cycles.txt ]; then
+            echo '```' >> report.md
+            cat cycles.txt >> report.md
+            echo '```' >> report.md
+          else
+            echo "No circular dependencies detected." >> report.md
+          fi
+
+      - name: E2E coverage gaps
+        run: |
+          echo "## E2E Coverage Gaps" >> report.md
+          echo "" >> report.md
+          echo "Shortcut domains without E2E tests:" >> report.md
+          echo "" >> report.md
+          found=0
+          for domain in $(ls -d shortcuts/*/); do
+            name=$(basename "$domain")
+            if [ "$name" = "common" ]; then continue; fi
+            if [ ! -d "tests/cli_e2e/$name" ]; then
+              echo "- **$name** (no tests/cli_e2e/$name/)" >> report.md
+              found=1
+            fi
+          done
+          if [ "$found" = "0" ]; then
+            echo "All shortcut domains have E2E test directories." >> report.md
+          fi
+
+      - name: Coverage
+        run: |
+          echo "## Coverage" >> report.md
+          packages=$(go list ./... | grep -v 'tests/cli_e2e')
+          go test -coverprofile=coverage.txt -covermode=atomic $packages 2>/dev/null || true
+          total=$(go tool cover -func=coverage.txt 2>/dev/null | grep total | awk '{print $3}')
+          echo "Current total coverage: **${total:-n/a}**" >> report.md
+
+      - name: Publish report
+        run: |
+          echo "# Architecture Audit Report — $(date +%Y-%m-%d)" > $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          cat report.md >> $GITHUB_STEP_SUMMARY
+
+      - name: Upload report artifact
+        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
+        with:
+          name: arch-audit-${{ github.run_number }}
+          path: report.md
+          retention-days: 90

.github/workflows/ci.yml

@@ -0,0 +1,334 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  actions: read
+  checks: write
+  pull-requests: write
+
+jobs:
+  # ── Layer 1: Fast Gate ─────────────────────────────────────────────
+  fast-gate:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Fetch meta data
+        run: python3 scripts/fetch_meta.py
+      - name: Build
+        run: go build ./...
+      - name: Vet
+        run: go vet ./...
+      - name: Check formatting
+        run: |
+          unformatted=$(gofmt -l .)
+          if [ -n "$unformatted" ]; then
+            echo "$unformatted"
+            echo "::error::Unformatted Go files detected — run 'gofmt -w .' and commit"
+            exit 1
+          fi
+      - name: Check go.mod tidiness
+        run: |
+          go mod tidy
+          if ! git diff --quiet go.mod go.sum; then
+            echo "::error::go.mod or go.sum is not tidy. Run 'go mod tidy' and commit the changes."
+            git diff go.mod go.sum
+            exit 1
+          fi
+
+  # ── Layer 2: Quality Gate ──────────────────────────────────────────
+  unit-test:
+    needs: fast-gate
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Fetch meta data
+        run: python3 scripts/fetch_meta.py
+      - name: Run tests
+        run: go test -v -race -count=1 -timeout=5m ./cmd/... ./internal/... ./shortcuts/...
+
+  lint:
+    needs: fast-gate
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Fetch meta data
+        run: python3 scripts/fetch_meta.py
+      - name: Run golangci-lint
+        run: go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.6 run --new-from-rev=origin/main
+
+  coverage:
+    needs: fast-gate
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Fetch meta data
+        run: python3 scripts/fetch_meta.py
+      - name: Run tests with coverage
+        run: |
+          packages=$(go list ./... | grep -v '^github.com/larksuite/cli/tests/cli_e2e$' | grep -v '^github.com/larksuite/cli/tests/cli_e2e/')
+          go test -race -coverprofile=coverage.txt -covermode=atomic $packages
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@3f20e214133d0983f9a10f3d63b0faf9241a3daa # v6
+        with:
+          files: coverage.txt
+          token: ${{ secrets.CODECOV_TOKEN }}
+      - name: Check coverage threshold
+        run: |
+          total=$(go tool cover -func=coverage.txt | grep total | awk '{print $3}' | tr -d '%')
+          threshold=40
+          echo "Coverage: ${total}% (threshold: ${threshold}%)"
+          if (( $(echo "$total < $threshold" | bc -l) )); then
+            echo "::error::Coverage ${total}% is below threshold ${threshold}%"
+            exit 1
+          fi
+      - name: Coverage summary
+        if: ${{ !cancelled() }}
+        run: |
+          if [ ! -f coverage.txt ]; then
+            echo "No coverage data available" >> $GITHUB_STEP_SUMMARY
+            exit 0
+          fi
+          total=$(go tool cover -func=coverage.txt | grep total | awk '{print $3}')
+          echo "## Coverage Report" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "**Total coverage: ${total}**" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "<details><summary>Details</summary>" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo '```' >> $GITHUB_STEP_SUMMARY
+          go tool cover -func=coverage.txt >> $GITHUB_STEP_SUMMARY
+          echo '```' >> $GITHUB_STEP_SUMMARY
+          echo "</details>" >> $GITHUB_STEP_SUMMARY
+
+  deadcode:
+    needs: fast-gate
+    if: ${{ github.event_name == 'pull_request' }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Fetch meta data
+        run: python3 scripts/fetch_meta.py
+      - name: Dead code check (incremental)
+        run: |
+          # Analyze current HEAD (strip line:col for stable diff across line shifts)
+          # Filter "go: downloading ..." lines to avoid false diffs from module cache state
+          go run golang.org/x/tools/cmd/deadcode@v0.31.0 -test ./... 2>&1 | \
+            grep -v '^go: ' | \
+            sed 's/:[0-9][0-9]*:[0-9][0-9]*:/:/' | sort > /tmp/dc-head.txt
+
+          # Analyze base branch via worktree
+          git worktree add -q /tmp/dc-base "origin/${{ github.base_ref }}"
+          (cd /tmp/dc-base && python3 scripts/fetch_meta.py && \
+           go run golang.org/x/tools/cmd/deadcode@v0.31.0 -test ./... 2>&1 | \
+            grep -v '^go: ' | \
+            sed 's/:[0-9][0-9]*:[0-9][0-9]*:/:/' | sort > /tmp/dc-base.txt) || {
+            echo "::warning::Failed to analyze base branch — skipping incremental dead code check"
+            git worktree remove -f /tmp/dc-base 2>/dev/null || true
+            exit 0
+          }
+          git worktree remove -f /tmp/dc-base
+
+          # Only new dead code blocks the PR
+          comm -23 /tmp/dc-head.txt /tmp/dc-base.txt > /tmp/dc-new.txt
+          if [ -s /tmp/dc-new.txt ]; then
+            echo "::group::New dead code"
+            cat /tmp/dc-new.txt
+            echo "::endgroup::"
+            echo "::error::New dead code detected — remove unreachable functions before merging"
+            exit 1
+          fi
+          echo "No new dead code introduced"
+
+  # ── Layer 3: E2E Gate ──────────────────────────────────────────────
+  e2e-dry-run:
+    needs: [unit-test, lint]
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Build lark-cli
+        run: make build
+      - name: Run dry-run E2E tests
+        env:
+          LARK_CLI_BIN: ${{ github.workspace }}/lark-cli
+          LARKSUITE_CLI_APP_ID: dry-run
+          LARKSUITE_CLI_APP_SECRET: dry-run
+          LARKSUITE_CLI_BRAND: feishu
+        run: go test -v -count=1 -timeout=5m ./tests/cli_e2e/... -run 'DryRun|Regression'
+
+  e2e-live:
+    needs: [unit-test, lint]
+    if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.head.repo.fork }}
+    runs-on: ubuntu-latest
+    env:
+      TEST_BOT1_APP_ID: ${{ secrets.TEST_BOT1_APP_ID }}
+      TEST_BOT1_APP_SECRET: ${{ secrets.TEST_BOT1_APP_SECRET }}
+      TEST_USER_ACCESS_TOKEN: ${{ secrets.TEST_USER_ACCESS_TOKEN }}
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Build lark-cli
+        run: make build
+      - name: Configure bot credentials
+        run: |
+          if [ -z "$TEST_BOT1_APP_ID" ] || [ -z "$TEST_BOT1_APP_SECRET" ]; then
+            echo "::error::Missing required secrets: TEST_BOT1_APP_ID / TEST_BOT1_APP_SECRET"
+            exit 1
+          fi
+          printf '%s\n' "$TEST_BOT1_APP_SECRET" | ./lark-cli config init --app-id "$TEST_BOT1_APP_ID" --app-secret-stdin
+      - name: Run CLI E2E tests
+        env:
+          LARK_CLI_BIN: ${{ github.workspace }}/lark-cli
+        run: |
+          packages=$(go list ./tests/cli_e2e/... | grep -v '^github.com/larksuite/cli/tests/cli_e2e$' | grep -v '/demo$')
+          if [ -z "$packages" ]; then
+            echo "No CLI E2E packages to test after exclusions."
+            exit 1
+          fi
+          packages_arg=$(printf '%s\n' "$packages" | paste -sd' ' -)
+          go run gotest.tools/gotestsum@v1.12.3 --rerun-fails=2 --rerun-fails-max-failures=20 --packages="$packages_arg" --format testname --junitfile cli-e2e-report.xml -- -count=1 -v
+      - name: Publish CLI E2E test report
+        if: ${{ !cancelled() }}
+        uses: dorny/test-reporter@a43b3a5f7366b97d083190328d2c652e1a8b6aa2 # v3.0.0
+        with:
+          name: CLI E2E Tests
+          path: cli-e2e-report.xml
+          reporter: java-junit
+          use-actions-summary: true
+          list-suites: all
+          list-tests: all
+
+  # ── Layer 4: Security & Compliance (parallel with L2-L3) ──────────
+  security:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
+        with:
+          go-version-file: go.mod
+      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
+        with:
+          python-version: '3.x'
+      - name: Fetch meta data
+        run: python3 scripts/fetch_meta.py
+      - name: Gitleaks
+        if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.head.repo.fork }}
+        uses: gitleaks/gitleaks-action@ff98106e4c7b2bc287b24eaf42907196329070c7 # v2.3.9
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITLEAKS_LICENSE: ${{ secrets.GITLEAKS_KEY }}
+      - name: govulncheck
+        continue-on-error: true
+        run: go run golang.org/x/vuln/cmd/govulncheck@v1.1.4 ./...
+      - name: Check dependency licenses
+        run: go run github.com/google/go-licenses/v2@v2.0.1 check ./... --disallowed_types=forbidden,restricted,reciprocal,unknown
+
+  license-header:
+    if: ${{ github.event_name == 'pull_request' }}
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - name: Check license headers
+        uses: apache/skywalking-eyes/header@8c96ee223558797cdd9eba82c0919258e1cf2dad
+        with:
+          config: .licenserc.yaml
+
+  # ── Results Gate (single required check for branch protection) ─────
+  results:
+    if: ${{ always() }}
+    needs: [fast-gate, unit-test, lint, coverage, deadcode, e2e-dry-run, e2e-live, security, license-header]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Evaluate results
+        run: |
+          echo "## CI Results" >> $GITHUB_STEP_SUMMARY
+          echo "" >> $GITHUB_STEP_SUMMARY
+          echo "| Layer | Job | Status |" >> $GITHUB_STEP_SUMMARY
+          echo "|-------|-----|--------|" >> $GITHUB_STEP_SUMMARY
+          echo "| L1 | fast-gate | ${{ needs.fast-gate.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L2 | unit-test | ${{ needs.unit-test.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L2 | lint | ${{ needs.lint.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L2 | coverage | ${{ needs.coverage.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L2 | deadcode | ${{ needs.deadcode.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L3 | e2e-dry-run | ${{ needs.e2e-dry-run.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L3 | e2e-live | ${{ needs.e2e-live.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L4 | security | ${{ needs.security.result }} |" >> $GITHUB_STEP_SUMMARY
+          echo "| L4 | license-header | ${{ needs.license-header.result }} |" >> $GITHUB_STEP_SUMMARY
+
+          # Any failure or cancellation in any job blocks the merge.
+          # Legitimately skipped jobs (deadcode on push, e2e-live on fork,
+          # license-header on push) are OK.
+          FAILED=0
+          for result in \
+            "${{ needs.fast-gate.result }}" \
+            "${{ needs.unit-test.result }}" \
+            "${{ needs.lint.result }}" \
+            "${{ needs.coverage.result }}" \
+            "${{ needs.deadcode.result }}" \
+            "${{ needs.e2e-dry-run.result }}" \
+            "${{ needs.e2e-live.result }}" \
+            "${{ needs.security.result }}" \
+            "${{ needs.license-header.result }}"; do
+            if [ "$result" = "failure" ] || [ "$result" = "cancelled" ]; then
+              FAILED=1
+            fi
+          done
+
+          if [ "$FAILED" = "1" ]; then
+            echo ""
+            echo "::error::One or more CI jobs failed — see table above"
+            exit 1
+          fi

.github/workflows/cli-e2e.yml

@@ -1,135 +0,0 @@
-name: CLI E2E Tests
-
-on:
-  push:
-    branches: [main]
-    paths:
-      - "**.go"
-      - go.mod
-      - go.sum
-      - Makefile
-      - scripts/fetch_meta.py
-      - tests/cli_e2e/**
-      - .github/workflows/cli-e2e.yml
-  pull_request:
-    branches: [main]
-    paths:
-      - "**.go"
-      - go.mod
-      - go.sum
-      - Makefile
-      - scripts/fetch_meta.py
-      - tests/cli_e2e/**
-      - .github/workflows/cli-e2e.yml
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  cli-e2e:
-    # Forked pull_request runs do not receive repository/org secrets except GITHUB_TOKEN.
-    if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.head.repo.fork }}
-    runs-on: ubuntu-latest
-    env:
-      TEST_BOT1_APP_ID: ${{ secrets.TEST_BOT1_APP_ID }}
-      TEST_BOT1_APP_SECRET: ${{ secrets.TEST_BOT1_APP_SECRET }}
-    steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
-
-      - uses: actions/setup-go@4a3601121dd01d1626a1e23e37211e3254c1c06c # v6
-        with:
-          go-version-file: go.mod
-
-      - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
-        with:
-          python-version: '3.x'
-
-      - name: Build lark-cli
-        run: make build
-
-      - name: Configure bot credentials
-        run: |
-          if [ -z "$TEST_BOT1_APP_ID" ] || [ -z "$TEST_BOT1_APP_SECRET" ]; then
-            echo "::error::Missing required secrets: TEST_BOT1_APP_ID / TEST_BOT1_APP_SECRET"
-            exit 1
-          fi
-          printf '%s\n' "$TEST_BOT1_APP_SECRET" | ./lark-cli config init --app-id "$TEST_BOT1_APP_ID" --app-secret-stdin
-
-      - name: Run CLI E2E tests
-        env:
-          LARK_CLI_BIN: ${{ github.workspace }}/lark-cli
-        run: |
-          packages=$(go list ./tests/cli_e2e/... | grep -v '^github.com/larksuite/cli/tests/cli_e2e$' | grep -v '/demo$')
-          if [ -z "$packages" ]; then
-            echo "No CLI E2E packages to test after exclusions."
-            exit 1
-          fi
-          go run gotest.tools/gotestsum@v1.12.3 --format testname --junitfile cli-e2e-report.xml -- -count=1 -v $packages
-
-      - name: Summarize CLI E2E test report
-        if: ${{ !cancelled() }}
-        run: |
-          python3 - <<'PY'
-          import os
-          import xml.etree.ElementTree as ET
-
-          report_path = "cli-e2e-report.xml"
-          summary_path = os.environ["GITHUB_STEP_SUMMARY"]
-
-          root = ET.parse(report_path).getroot()
-          suites = [root] if root.tag == "testsuite" else root.findall("testsuite")
-
-          tests = failures = errors = skipped = 0
-          failed_cases = []
-          skipped_cases = []
-
-          for suite in suites:
-            tests += int(suite.attrib.get("tests", 0))
-            failures += int(suite.attrib.get("failures", 0))
-            errors += int(suite.attrib.get("errors", 0))
-            skipped += int(suite.attrib.get("skipped", 0))
-
-            for case in suite.findall("testcase"):
-              classname = case.attrib.get("classname", "")
-              name = case.attrib.get("name", "")
-              label = f"{classname}.{name}" if classname else name
-
-              failure = case.find("failure")
-              error = case.find("error")
-              skipped_node = case.find("skipped")
-
-              if failure is not None or error is not None:
-                message = ""
-                node = failure if failure is not None else error
-                if node is not None:
-                  message = node.attrib.get("message", "") or (node.text or "").strip()
-                failed_cases.append((label, message))
-              elif skipped_node is not None:
-                message = skipped_node.attrib.get("message", "") or (skipped_node.text or "").strip()
-                skipped_cases.append((label, message))
-
-          passed = tests - failures - errors - skipped
-
-          with open(summary_path, "a", encoding="utf-8") as f:
-            f.write("## CLI E2E Test Report\n\n")
-            f.write(f"- Total: {tests}\n")
-            f.write(f"- Passed: {passed}\n")
-            f.write(f"- Failed: {failures}\n")
-            f.write(f"- Errors: {errors}\n")
-            f.write(f"- Skipped: {skipped}\n\n")
-
-            if failed_cases:
-              f.write("### Failed Tests\n\n")
-              for label, message in failed_cases:
-                detail = f" - {message}" if message else ""
-                f.write(f"- `{label}`{detail}\n")
-              f.write("\n")
-
-            if skipped_cases:
-              f.write("### Skipped Tests\n\n")
-              for label, message in skipped_cases:
-                detail = f" - {message}" if message else ""
-                f.write(f"- `{label}`{detail}\n")
-              f.write("\n")
-          PY

.github/workflows/coverage.yml

@@ -1,58 +0,0 @@
-name: Coverage
-
-on:
-  push:
-    branches: [main]
-    paths:
-      - "**.go"
-      - "!tests/cli_e2e/**"
-      - go.mod
-      - go.sum
-      - .github/workflows/coverage.yml
-  pull_request:
-    branches: [main]
-    paths:
-      - "**.go"
-      - "!tests/cli_e2e/**"
-      - go.mod
-      - go.sum
-      - .github/workflows/coverage.yml
-
-permissions:
-  contents: read
-
-jobs:
-  coverage:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5
-        with:
-          go-version-file: go.mod
-
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
-        with:
-          python-version: '3.x'
-
-      - name: Fetch meta data
-        run: python3 scripts/fetch_meta.py
-
-      - name: Run tests with coverage
-        run: |
-          packages=$(go list ./... | grep -v '^github.com/larksuite/cli/tests/cli_e2e$' | grep -v '^github.com/larksuite/cli/tests/cli_e2e/')
-          go test -race -coverprofile=coverage.txt -covermode=atomic $packages
-
-      - name: Generate coverage report
-        run: |
-          total=$(go tool cover -func=coverage.txt | grep total | awk '{print $3}')
-          echo "## Coverage Report" >> $GITHUB_STEP_SUMMARY
-          echo "" >> $GITHUB_STEP_SUMMARY
-          echo "**Total coverage: ${total}**" >> $GITHUB_STEP_SUMMARY
-          echo "" >> $GITHUB_STEP_SUMMARY
-          echo "<details><summary>Details</summary>" >> $GITHUB_STEP_SUMMARY
-          echo "" >> $GITHUB_STEP_SUMMARY
-          echo '```' >> $GITHUB_STEP_SUMMARY
-          go tool cover -func=coverage.txt >> $GITHUB_STEP_SUMMARY
-          echo '```' >> $GITHUB_STEP_SUMMARY
-          echo "</details>" >> $GITHUB_STEP_SUMMARY

.github/workflows/gitleaks.yml

@@ -1,28 +0,0 @@
-name: Gitleaks
-
-on:
-  pull_request:
-    branches: [main]
-  push:
-    branches: [main]
-  workflow_dispatch:
-
-permissions:
-  contents: read
-
-jobs:
-  gitleaks:
-    # Forked pull_request runs do not receive repository/org secrets except GITHUB_TOKEN.
-    if: ${{ github.event_name != 'pull_request' || !github.event.pull_request.head.repo.fork }}
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
-        with:
-          fetch-depth: 0
-
-      - uses: gitleaks/gitleaks-action@ff98106e4c7b2bc287b24eaf42907196329070c7 # v2.3.9
-        env:
-          # GITHUB_TOKEN is provided automatically by GitHub Actions.
-          # GITLEAKS_KEY must be configured as a repository secret.
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          GITLEAKS_LICENSE: ${{ secrets.GITLEAKS_KEY }}

.github/workflows/license-header.yml

@@ -1,26 +0,0 @@
-name: License Header
-
-on:
-  pull_request:
-    branches: [main]
-    paths:
-      - "**/*.go"
-      - "**/*.js"
-      - "**/*.py"
-      - .licenserc.yaml
-      - .github/workflows/license-header.yml
-
-permissions:
-  contents: read
-  pull-requests: write
-
-jobs:
-  header-check:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5.0.1
-
-      - name: Check license headers
-        uses: apache/skywalking-eyes/header@8c96ee223558797cdd9eba82c0919258e1cf2dad
-        with:
-          config: .licenserc.yaml

.github/workflows/lint.yml

@@ -1,60 +0,0 @@
-name: Lint
-
-on:
-  push:
-    branches: [main]
-    paths:
-      - "**.go"
-      - go.mod
-      - go.sum
-      - .golangci.yml
-      - .github/workflows/lint.yml
-  pull_request:
-    branches: [main]
-    paths:
-      - "**.go"
-      - go.mod
-      - go.sum
-      - .golangci.yml
-      - .github/workflows/lint.yml
-
-permissions:
-  contents: read
-
-jobs:
-  golangci-lint:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-        with:
-          fetch-depth: 0
-
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5
-        with:
-          go-version-file: go.mod
-
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
-        with:
-          python-version: '3.x'
-
-      - name: Fetch meta_data.json
-        run: python3 scripts/fetch_meta.py
-
-      - name: Ensure go.mod and go.sum are tidy
-        run: |
-          go mod tidy
-          if ! git diff --quiet go.mod go.sum; then
-            echo "::error::go.mod or go.sum is not tidy. Run 'go mod tidy' and commit the changes."
-            git diff go.mod go.sum
-            exit 1
-          fi
-
-      - name: Run golangci-lint
-        run: go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.6 run --new-from-rev=origin/main
-
-      - name: Run govulncheck
-        continue-on-error: true # informational until Go version is upgraded
-        run: go run golang.org/x/vuln/cmd/govulncheck@v1.1.4 ./...
-
-      - name: Check dependency licenses
-        run: go run github.com/google/go-licenses/v2@v2.0.1 check ./... --disallowed_types=forbidden,restricted,reciprocal,unknown

.github/workflows/tests.yml

@@ -1,43 +0,0 @@
-name: Tests
-
-on:
-  push:
-    branches: [main]
-    paths:
-      - "**.go"
-      - go.mod
-      - go.sum
-      - .github/workflows/tests.yml
-  pull_request:
-    branches: [main]
-    paths:
-      - "**.go"
-      - go.mod
-      - go.sum
-      - .github/workflows/tests.yml
-
-permissions:
-  contents: read
-
-jobs:
-  unit-test:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
-
-      - uses: actions/setup-go@40f1582b2485089dde7abd97c1529aa768e1baff # v5
-        with:
-          go-version-file: go.mod
-
-      - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
-        with:
-          python-version: '3.x'
-
-      - name: Fetch meta data
-        run: python3 scripts/fetch_meta.py
-
-      - name: Run tests
-        run: go test -v -race -count=1 -timeout=5m ./cmd/... ./internal/... ./shortcuts/...
-
-      - name: Build
-        run: go build -v ./...

.gitignore

@@ -35,3 +35,6 @@ tests/mail/reports/
 # Generated / test artifacts
 internal/registry/meta_data.json
 cmd/api/download.bin
+app.log
+/sidecar-server-demo
+/server-demo

.golangci.yml

@@ -70,6 +70,14 @@ linters:
               desc: >-
                 shortcuts must not import internal/vfs/localfileio directly.
                 Use runtime.FileIO() for file operations or runtime.ValidatePath() for path validation.
+        shortcuts-no-raw-http:
+          files:
+            - "**/shortcuts/**"
+          deny:
+            - pkg: "net/http"
+              desc: >-
+                use RuntimeContext.DoAPI/CallAPI/DoAPIJSON instead of raw net/http.
+                The client layer handles auth, headers, and error normalization.
     forbidigo:
       forbid:
         # ── os: already wrapped in internal/vfs ──
@@ -100,6 +108,16 @@ linters:
           msg: >-
             Do not use os.Exit in shortcuts/. Return an error instead and let
             the caller (cmd layer) decide how to terminate.
+        # ── output: shortcuts must use ctx.Out() ──
+        - pattern: fmt\.Print(f|ln)?\b
+          msg: >-
+            use ctx.Out() or ctx.OutFormat() for structured JSON output.
+            fmt.Print* bypasses the output envelope and breaks --jq/--format.
+        # ── logging: shortcuts must return errors, not log.Fatal ──
+        - pattern: log\.(Print|Fatal|Panic)(f|ln)?\b
+          msg: >-
+            use structured error return, not log.Fatal/Panic.
+            Shortcuts must return errors to the framework for proper exit code handling.
         # ── filepath: functions that access the filesystem ──
         - pattern: filepath\.(EvalSymlinks|Walk|WalkDir|Glob|Abs)\b
           msg: >-

AGENTS.md

@@ -18,9 +18,11 @@ make test           # Full: vet + unit + integration
 ## Pre-PR Checks (match CI gates)
 
 1. `make unit-test`
-2. `go mod tidy` — must not change `go.mod`/`go.sum`
-3. `go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.6 run --new-from-rev=origin/main`
-4. If dependencies changed: `go run github.com/google/go-licenses/v2@v2.0.1 check ./... --disallowed_types=forbidden,restricted,reciprocal,unknown`
+2. `go vet ./...`
+3. `gofmt -l .` — must produce no output
+4. `go mod tidy` — must not change `go.mod`/`go.sum`
+5. `go run github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.6 run --new-from-rev=origin/main`
+6. If dependencies changed: `go run github.com/google/go-licenses/v2@v2.0.1 check ./... --disallowed_types=forbidden,restricted,reciprocal,unknown`
 
 ## Commit & PR
 
@@ -76,3 +78,26 @@ CLI arguments are untrusted (they come from AI agents). Call `validate.SafeInput
 - Every behavior change needs a test alongside the change.
 - `cmdutil.TestFactory(t, config)` for test factories.
 - `t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())` to isolate config state.
+
+### E2E Testing
+
+**Dry-run E2E (required for every shortcut change)**
+- Validates request structure without calling real APIs
+- Place in `tests/cli_e2e/dryrun/` or the corresponding domain directory
+- Set env vars `LARKSUITE_CLI_APP_ID`/`APP_SECRET`/`BRAND`, use `--dry-run`, assert method/URL/params
+- No secrets needed — runs on fork PRs
+- Explore correct params with `lark-cli <domain> --help` and `lark-cli schema` first
+
+**Live E2E (required for new flows or behavior changes)**
+- Validates real API round-trips
+- Place in `tests/cli_e2e/<domain>/`
+- Must be self-contained: create -> use -> cleanup
+- Needs bot credentials (CI secrets, skipped on fork PRs)
+- Reference: `tests/cli_e2e/task/task_status_workflow_test.go`
+
+| Change | Dry-run E2E | Live E2E |
+|--------|:-----------:|:--------:|
+| New shortcut | Required | Required |
+| Modify shortcut flags/params | Required | If behavior changes |
+| Shortcut bug fix | Required | If regression risk |
+| Internal refactor (no shortcut impact) | Not needed | Not needed |

CHANGELOG.md

@@ -2,6 +2,214 @@
 
 All notable changes to this project will be documented in this file.
 
+## [v1.0.17] - 2026-04-22
+
+### Features
+
+- **im**: Use `Content-Disposition` filename when downloading message resources (#536)
+- **drive**: Add `+apply-permission` to request doc access (#588)
+- Support record share link (#466)
+- **whiteboard**: Add image support to `whiteboard-cli` skill (#553)
+- **cmdutil**: Add `X-Cli-Build` header for CLI build classification (#596)
+
+### Bug Fixes
+
+- **base**: Add default-table follow-up hint to `base-create` (#600)
+- Skip flag-completion registration outside completion path (#598)
+- Add `record-share-link-create` in `SKILL.md` (#597)
+- **mail**: Remove leftover conflict marker in skill docs (#594)
+
+### Documentation
+
+- **drive**: Clarify that comment listing defaults to unresolved comments only (#609)
+- **doc**: Fix `--markdown` examples that teach literal `\n` (#602)
+- **mail**: Remove `get_signatures` from skill reference, exposed via `+signature` instead (#545)
+
+## [v1.0.16] - 2026-04-21
+
+### Features
+
+- **mail**: Support large email attachments (#537)
+- **mail**: Add draft preview URL to draft operations (#438)
+- **doc**: Add pre-write semantic warnings to `docs +update` (#569)
+- **doc**: Add `--selection-with-ellipsis` position flag to `+media-insert` (#335)
+- **calendar**: Support event share link and error details (#583)
+
+### Bug Fixes
+
+- **doc**: Preserve round-trip formatting in `+fetch` output (#469)
+- **docs**: Validate `--selection-by-title` format early (#256)
+- **whiteboard**: Register `+media-upload` shortcut and add whiteboard parent type
+
+### Refactor
+
+- Split `Execute` into `Build` + `Execute` with explicit IO and keychain injection (#371)
+- **auth**: Simplify scope reporting in login flow (#582)
+
+## [v1.0.15] - 2026-04-20
+
+### Features
+
+- **sheets**: Add float image shortcuts (#494)
+- **approval**: Document `remind` and `initiated` methods in skill (#554)
+
+### Bug Fixes
+
+- **base**: Preserve attachment metadata on base uploads (#563)
+- **base**: Fix role view and record default permission on edit (#530)
+- **sheets**: Normalize single-cell range in `+set-style` and `+batch-set-style` (#548)
+- **im**: Cap `basic_batch` user_ids at 10 per API limit (#551)
+- **install**: Refine install wizard messages (#529)
+- **whiteboard**: Deprecate old `lark-whiteboard-cli` skill (#547)
+
+## [v1.0.14] - 2026-04-17
+
+### Features
+
+- **mail**: Add email priority support for compose and read (#538)
+- **mail**: Support scheduled send (#534)
+- **drive**: Support sheet cell comments in `+add-comment` (#518)
+- **doc**: Add `--file-view` flag to `+media-insert` (#419)
+- **base**: Auto grant current user for bot create and copy (#497)
+- **base**: Add identity priority strategy and error handling (#505)
+- **auth**: Improve login scope handling and messages (#523)
+- Add OKR business domain (#522)
+
+### Documentation
+
+- **wiki**: Improve wiki skill docs and add wiki domain template (#512)
+- **task**: Document `custom_fields` and `custom_field_options` API resources and permissions (#524)
+
+### Refactor
+
+- **skills**: Introduce `lark-doc-whiteboard.md` and streamline whiteboard workflow (#502)
+
+## [v1.0.13] - 2026-04-16
+
+### Features
+
+- **im**: Support user access token for file, image, audio, and video upload, aligning upload and send identity with `--as` flag (#474)
+- **drive**: Add `drive +create-folder` shortcut with root-folder fallback and bot-mode auto-grant (#470)
+- **wiki**: Add bot-mode auto-grant support to `wiki +node-create` (#470)
+- **doc**: Default `skip_task_detail` in `docs +fetch` to reduce unnecessary task detail expansion (#471)
+
+### Bug Fixes
+
+- **im**: Preserve original URL filename for uploaded file messages instead of generic `media.ext` names (#514)
+- **whiteboard**: Use atomic overwrite API parameter for `whiteboard +update`, replacing read-then-delete approach (#483)
+
+### Documentation
+
+- **base**: Unify record batch write limit to 200 and enforce serial writes for continuous operations (#499)
+- **base**: Remove redundant reference documentation and command grouping chapters from SKILL.md (#500)
+
+### CI
+
+- Consolidate workflows into layered CI pyramid with single `results` gate (#510)
+
+## [v1.0.12] - 2026-04-15
+
+### Features
+
+- Add guided npm install flow that installs or upgrades the CLI, installs AI skills, and walks through app config and auth login (#464)
+- **mail**: Add email signature support with `+signature`, `--signature-id` compose flags, and draft signature edit operations (#485)
+- **mail**: Return recall hints for sent emails when recall is available (#481)
+- **slides**: Add `+media-upload` and support `@path` image placeholders in `+create --slides` (#450)
+
+### Documentation
+
+- **mail**: Add recipient search guidance to the mail skill workflow (#437)
+- **calendar/vc**: Route past meeting queries to `lark-vc` and clarify historical date matching in skills (#482, #480)
+
+## [v1.0.11] - 2026-04-14
+
+### Features
+
+- **sheets**: Add dropdown shortcuts for data validation management (`+set-dropdown`, `+update-dropdown`, `+get-dropdown`, `+delete-dropdown`) (#461)
+- **task**: Add task search, tasklist search, related-task, set-ancestor, and subscribe-event shortcuts (#377)
+- Streamline interactive login by removing the extra auth confirmation step (#451)
+
+### Bug Fixes
+
+- **base**: Validate JSON object inputs for base shortcuts and reject `null` objects (#458)
+
+### Documentation
+
+- **sheets**: Document value formats for formulas and special field types (#456)
+- **readme**: Add Attendance to the features table (#460)
+
+## [v1.0.10] - 2026-04-13
+
+### Features
+
+- **im**: Support im oapi range download for large files (#283)
+- **sheets**: Add filter view and condition shortcuts (#422)
+- **wiki**: Add wiki move shortcut with async task polling (#436)
+- **drive**: Add drive `+create-shortcut` shortcut (#432)
+- **drive**: Add drive files patch metadata API (#444)
+- **task**: Support `--section-guid` flag in tasklist-task-add shortcut (#430)
+
+### Bug Fixes
+
+- **base**: Support large base attachment uploads (#441)
+- **config**: Clarify init copy for TTY, preserve original for AI (#448)
+- **im**: Reject `--user-id` under bot identity for chat-messages-list (#340)
+- **mail**: Add missing scopes for mail `+watch` shortcut (#357)
+- **mail**: Restrict `--output-dir` to current working directory (#376)
+
+### Documentation
+
+- **wiki**: Add wiki member operations to lark-wiki skill (#417)
+- **task**: Document sections API resources, permissions, and URL parsing (#430)
+- **doc**: Clarify when markdown escaping is needed (#312)
+
+## [v1.0.9] - 2026-04-11
+
+### Features
+
+- Add attendance `user_task.query` (#405)
+- Support minutes search (#359)
+- **slides**: Add slides `+create` shortcut with `--slides` one-step creation (#389)
+- **slides**: Return presentation URL in slides `+create` output (#425)
+- **sheets**: Add dimension shortcuts for row/column operations (#413)
+- **sheets**: Add cell operation shortcuts for merge, replace, and style (#412)
+- **drive**: Add drive folder delete shortcut with async task polling (#415)
+
+### Documentation
+
+- **drive**: Add guide for granting document permission to current bot (#414)
+
+## [v1.0.8] - 2026-04-10
+
+### Features
+
+- Add `update` command with self-update, verification, and rollback (#391)
+- Add `--file` flag for multipart/form-data file uploads (#395)
+- Support file comment reply reactions (#380)
+- **base**: Add `+dashboard-arrange` command for auto-arranging dashboard blocks layout and `text` block type with Markdown support (#388)
+- **base**: Add record batch `+add` / `+set` shortcuts (#277)
+- **base**: Add `+record-search` for keyword-based record search (#328)
+- **base**: Add view visible fields `+get` / `+set` shortcuts (#326)
+- **base**: Add record field filters (#327)
+- **base**: Optimize workflow skills (#345)
+- **calendar**: Add room find workflow (#403)
+- **mail**: Add `--page-token` and `--page-size` to mail `+triage` (#301)
+- **whiteboard**: Add `+query` shortcut and enhance `+update` with Mermaid/PlantUML support (#382)
+
+### Bug Fixes
+
+- Improve error hints for sandbox and initialization issues (#384)
+- Fix markdown line breaks support (#338)
+- Return raw base field and view responses (#378)
+- **base**: Return raw table list response and clarify sort help (#393)
+- **calendar**: Add default video meeting to `+create` (#383)
+- **mail**: Replace `os.Exit` with graceful shutdown in mail watch (#350)
+
+### Documentation
+
+- **base**: Document Base attachment download via docs `+media-download` (#404)
+- Reorganize lark-base skill guidance (#374)
+
 ## [v1.0.7] - 2026-04-09
 
 ### Features
@@ -256,6 +464,16 @@ Bundled AI agent skills for intelligent assistance:
 - Bilingual documentation (English & Chinese).
 - CI/CD pipelines: linting, testing, coverage reporting, and automated releases.
 
+[v1.0.17]: https://github.com/larksuite/cli/releases/tag/v1.0.17
+[v1.0.16]: https://github.com/larksuite/cli/releases/tag/v1.0.16
+[v1.0.15]: https://github.com/larksuite/cli/releases/tag/v1.0.15
+[v1.0.14]: https://github.com/larksuite/cli/releases/tag/v1.0.14
+[v1.0.13]: https://github.com/larksuite/cli/releases/tag/v1.0.13
+[v1.0.12]: https://github.com/larksuite/cli/releases/tag/v1.0.12
+[v1.0.11]: https://github.com/larksuite/cli/releases/tag/v1.0.11
+[v1.0.10]: https://github.com/larksuite/cli/releases/tag/v1.0.10
+[v1.0.9]: https://github.com/larksuite/cli/releases/tag/v1.0.9
+[v1.0.8]: https://github.com/larksuite/cli/releases/tag/v1.0.8
 [v1.0.7]: https://github.com/larksuite/cli/releases/tag/v1.0.7
 [v1.0.6]: https://github.com/larksuite/cli/releases/tag/v1.0.6
 [v1.0.5]: https://github.com/larksuite/cli/releases/tag/v1.0.5

README.md

@@ -6,14 +6,14 @@
 
 [中文版](./README.zh.md) | [English](./README.md)
 
-The official [Lark/Feishu](https://www.larksuite.com/) CLI tool, maintained by the [larksuite](https://github.com/larksuite) team — built for humans and AI Agents. Covers core business domains including Messenger, Docs, Base, Sheets, Calendar, Mail, Tasks, Meetings, and more, with 200+ commands and 20 AI Agent [Skills](./skills/).
+The official [Lark/Feishu](https://www.larksuite.com/) CLI tool, maintained by the [larksuite](https://github.com/larksuite) team — built for humans and AI Agents. Covers core business domains including Messenger, Docs, Base, Sheets, Slides, Calendar, Mail, Tasks, Meetings, and more, with 200+ commands and 22 AI Agent [Skills](./skills/).
 
 [Install](#installation--quick-start) · [AI Agent Skills](#agent-skills) · [Auth](#authentication) · [Commands](#three-layer-command-system) · [Advanced](#advanced-usage) · [Security](#security--risk-warnings-read-before-use) · [Contributing](#contributing)
 
 ## Why lark-cli?
 
-- **Agent-Native Design** — 20 structured [Skills](./skills/) out of the box, compatible with popular AI tools — Agents can operate Lark with zero extra setup
-- **Wide Coverage** — 12 business domains, 200+ curated commands, 20 AI Agent [Skills](./skills/)
+- **Agent-Native Design** — 22 structured [Skills](./skills/) out of the box, compatible with popular AI tools — Agents can operate Lark with zero extra setup
+- **Wide Coverage** — 14 business domains, 200+ curated commands, 22 AI Agent [Skills](./skills/)
 - **AI-Friendly & Optimized** — Every command is tested with real Agents, featuring concise parameters, smart defaults, and structured output to maximize Agent call success rates
 - **Open Source, Zero Barriers** — MIT license, ready to use, just `npm install`
 - **Up and Running in 3 Minutes** — One-click app creation, interactive login, from install to first API call in just 3 steps
@@ -30,12 +30,15 @@ The official [Lark/Feishu](https://www.larksuite.com/) CLI tool, maintained by t
 | 📁 Drive      | Upload and download files, search docs & wiki, manage comments                                                                    |
 | 📊 Base       | Create and manage tables, fields, records, views, dashboards, workflows, forms, roles & permissions, data aggregation & analytics |
 | 📈 Sheets     | Create, read, write, append, find, and export spreadsheet data                                                                    |
+| 🖼️ Slides     | Create and manage presentations, read presentation content, and add or remove slides                                              |
 | ✅ Tasks      | Create, query, update, and complete tasks; manage task lists, subtasks, comments & reminders                                      |
 | 📚 Wiki       | Create and manage knowledge spaces, nodes, and documents                                                                          |
 | 👤 Contact    | Search users by name/email/phone, get user profiles                                                                               |
 | 📧 Mail       | Browse, search, read emails, send, reply, forward, manage drafts, watch new mail                                                  |
 | 🎥 Meetings   | Search meeting records, query meeting minutes & recordings                                                                        |
+| 🕐 Attendance | Query personal attendance check-in records                                                                                        |
 | ✍️ Approval   | Query approval tasks, approve/reject/transfer tasks, cancel and CC instances                                                      |
+| 🎯 OKR        | Query, create, update OKRs; manage objective & key results, alignments and indicators.                                            |
 
 ## Installation & Quick Start
 
@@ -136,6 +139,7 @@ lark-cli auth status
 | `lark-doc`                      | Create, read, update, search documents (Markdown-based)                                                        |
 | `lark-drive`                    | Upload, download files, manage permissions & comments                                                          |
 | `lark-sheets`                   | Create, read, write, append, find, export spreadsheets                                                         |
+| `lark-slides`                   | Create and manage presentations, read presentation content, and add or remove slides                          |
 | `lark-base`                     | Tables, fields, records, views, dashboards, data aggregation & analytics                                       |
 | `lark-task`                     | Tasks, task lists, subtasks, reminders, member assignment                                                      |
 | `lark-mail`                     | Browse, search, read emails, send, reply, forward, draft management, watch new mail                            |
@@ -147,6 +151,7 @@ lark-cli auth status
 | `lark-minutes`                  | Minutes metadata & AI artifacts (summary, todos, chapters)                                                     |
 | `lark-openapi-explorer`         | Explore underlying APIs from official docs                                                                     |
 | `lark-skill-maker`              | Custom skill creation framework                                                                                |
+| `lark-attendance`               | Query personal attendance check-in records                                                                     |
 | `lark-approval`                 | Query approval tasks, approve/reject/transfer tasks, cancel and CC instances                                   |
 | `lark-workflow-meeting-summary` | Workflow: meeting minutes aggregation & structured report                                                      |
 | `lark-workflow-standup-report`  | Workflow: agenda & todo summary                                                                                |

README.zh.md

@@ -6,14 +6,14 @@
 
 [中文版](./README.zh.md) | [English](./README.md)
 
-飞书官方 CLI 工具，由 [larksuite](https://github.com/larksuite) 团队维护 — 让人类和 AI Agent 都能在终端中操作飞书。覆盖消息、文档、多维表格、电子表格、日历、邮箱、任务、会议等核心业务域，提供 200+ 命令及 20 个 AI Agent [Skills](./skills/)。
+飞书官方 CLI 工具，由 [larksuite](https://github.com/larksuite) 团队维护 — 让人类和 AI Agent 都能在终端中操作飞书。覆盖消息、文档、多维表格、电子表格、幻灯片、日历、邮箱、任务、会议等核心业务域，提供 200+ 命令及 22 个 AI Agent [Skills](./skills/)。
 
 [安装](#安装与快速开始) · [AI Agent Skills](#agent-skills) · [认证](#认证) · [命令](#三层命令调用) · [进阶用法](#进阶用法) · [安全](#安全与风险提示使用前必读) · [贡献](#贡献)
 
 ## 为什么选 lark-cli？
 
-- **为 Agent 原生设计** — [Skills](./skills/) 开箱即用，适配主流 AI 工具，Agent 无需额外适配即可操作飞书
-- **覆盖面广** — 12 大业务域、200+ 精选命令、 20 个 AI Agent [Skills](./skills/)
+- **为 Agent 原生设计** — 22 个 [Skills](./skills/) 开箱即用，适配主流 AI 工具，Agent 无需额外适配即可操作飞书
+- **覆盖面广** — 14 大业务域、200+ 精选命令、22 个 AI Agent [Skills](./skills/)
 - **AI 友好调优** — 每条命令经过 Agent 实测验证，提供更友好的参数、智能默认值和结构化输出，大幅提升 Agent 调用成功率
 - **开源零门槛** — MIT 协议，开箱即用，`npm install` 即可使用
 - **三分钟上手** — 一键创建应用、交互式登录授权，从安装到第一次 API 调用只需三步
@@ -30,12 +30,15 @@
 | 📁 云空间   | 上传和下载文件、搜索文档与知识库、管理评论                      |
 | 📊 多维表格 | 创建和管理数据表、字段、记录、视图、仪表盘、自动化流程、表单、角色权限，数据聚合分析 |
 | 📈 电子表格 | 创建、读取、写入、追加、查找和导出表格数据                      |
+| 🖼️ 幻灯片   | 创建和管理演示文稿、读取演示文稿内容，以及新增或删除幻灯片页面 |
 | ✅ 任务     | 创建、查询、更新和完成任务；管理任务清单、子任务、评论与提醒             |
 | 📚 知识库   | 创建和管理知识空间、节点和文档                            |
 | 👤 通讯录   | 按姓名/邮箱/手机号搜索用户、获取用户信息                      |
 | 📧 邮箱     | 浏览、搜索、阅读邮件，发送、回复、转发邮件，管理草稿，监听新邮件           |
 | 🎥 视频会议 | 搜索会议记录、查询会议纪要与录制                           |
+| 🕐 考勤打卡 | 查询个人考勤打卡记录                                |
 | ✍️ 审批     | 查询审批任务、同意/拒绝/转交审批任务、撤回与抄送审批实例              |
+| 🎯 OKR  | 查询、创建、更新 OKR，管理目标、关键结果、对齐和指标               |
 
 ## 安装与快速开始
 
@@ -137,6 +140,7 @@ lark-cli auth status
 | `lark-doc`                      | 创建、读取、更新、搜索文档（基于 Markdown）                |
 | `lark-drive`                    | 上传、下载文件，管理权限与评论                           |
 | `lark-sheets`                   | 创建、读取、写入、追加、查找、导出电子表格                     |
+| `lark-slides`                   | 创建和管理演示文稿、读取演示文稿内容，以及新增或删除幻灯片页面 |
 | `lark-base`                     | 多维表格、字段、记录、视图、仪表盘、数据聚合分析                  |
 | `lark-task`                     | 任务、任务清单、子任务、提醒、成员分配                       |
 | `lark-mail`                     | 浏览、搜索、阅读邮件，发送、回复、转发，草稿管理，监听新邮件            |
@@ -148,6 +152,7 @@ lark-cli auth status
 | `lark-minutes`                  | 妙记元数据与 AI 产物（总结、待办、章节）                    |
 | `lark-openapi-explorer`         | 从官方文档探索底层 API                             |
 | `lark-skill-maker`              | 自定义 skill 创建框架                            |
+| `lark-attendance`               | 查询个人考勤打卡记录                                |
 | `lark-approval`                 | 审批任务查询、同意/拒绝/转交审批任务、撤回与抄送审批实例             |
 | `lark-workflow-meeting-summary` | 工作流：会议纪要汇总与结构化报告                          |
 | `lark-workflow-standup-report`  | 工作流：日程待办摘要                                |

cmd/api/api.go

@@ -41,6 +41,7 @@ type APIOptions struct {
 	Format    string
 	JqExpr    string
 	DryRun    bool
+	File      string
 }
 
 var urlPrefixRe = regexp.MustCompile(`https?://[^/]+(/open-apis/.+)`)
@@ -56,6 +57,10 @@ func normalisePath(raw string) string {
 
 // NewCmdApi creates the api command. If runF is non-nil it is called instead of apiRun (test hook).
 func NewCmdApi(f *cmdutil.Factory, runF func(*APIOptions) error) *cobra.Command {
+	return NewCmdApiWithContext(context.Background(), f, runF)
+}
+
+func NewCmdApiWithContext(ctx context.Context, f *cmdutil.Factory, runF func(*APIOptions) error) *cobra.Command {
 	opts := &APIOptions{Factory: f}
 	var asStr string
 
@@ -78,7 +83,7 @@ func NewCmdApi(f *cmdutil.Factory, runF func(*APIOptions) error) *cobra.Command
 
 	cmd.Flags().StringVar(&opts.Params, "params", "", "query parameters JSON (supports - for stdin)")
 	cmd.Flags().StringVar(&opts.Data, "data", "", "request body JSON (supports - for stdin)")
-	cmd.Flags().StringVar(&asStr, "as", "auto", "identity type: user | bot | auto (default)")
+	cmdutil.AddAPIIdentityFlag(ctx, cmd, f, &asStr)
 	cmd.Flags().StringVarP(&opts.Output, "output", "o", "", "output file path for binary responses")
 	cmd.Flags().BoolVar(&opts.PageAll, "page-all", false, "automatically paginate through all pages")
 	cmd.Flags().IntVar(&opts.PageSize, "page-size", 0, "page size (0 = use API default)")
@@ -87,6 +92,7 @@ func NewCmdApi(f *cmdutil.Factory, runF func(*APIOptions) error) *cobra.Command
 	cmd.Flags().StringVar(&opts.Format, "format", "json", "output format: json|ndjson|table|csv")
 	cmd.Flags().StringVarP(&opts.JqExpr, "jq", "q", "", "jq expression to filter JSON output")
 	cmd.Flags().BoolVar(&opts.DryRun, "dry-run", false, "print request without executing")
+	cmd.Flags().StringVar(&opts.File, "file", "", "file to upload as multipart/form-data ([field=]path, supports - for stdin)")
 
 	cmd.ValidArgsFunction = func(_ *cobra.Command, args []string, _ string) ([]string, cobra.ShellCompDirective) {
 		if len(args) == 0 {
@@ -94,10 +100,7 @@ func NewCmdApi(f *cmdutil.Factory, runF func(*APIOptions) error) *cobra.Command
 		}
 		return nil, cobra.ShellCompDirectiveNoFileComp
 	}
-	_ = cmd.RegisterFlagCompletionFunc("as", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
-		return []string{"user", "bot"}, cobra.ShellCompDirectiveNoFileComp
-	})
-	_ = cmd.RegisterFlagCompletionFunc("format", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+	cmdutil.RegisterFlagCompletion(cmd, "format", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
 		return []string{"json", "ndjson", "table", "csv"}, cobra.ShellCompDirectiveNoFileComp
 	})
 
@@ -105,20 +108,24 @@ func NewCmdApi(f *cmdutil.Factory, runF func(*APIOptions) error) *cobra.Command
 }
 
 // buildAPIRequest validates flags and builds a RawApiRequest.
-func buildAPIRequest(opts *APIOptions) (client.RawApiRequest, error) {
-	// stdin is an io.Reader consumed at most once. Only one of --params/--data
-	// may use "-" (stdin); the conflict check below prevents silent data loss.
+// When dryRun is true and a file is provided, file reading is skipped and
+// FileUploadMeta is returned instead so the caller can render dry-run output.
+func buildAPIRequest(opts *APIOptions) (client.RawApiRequest, *cmdutil.FileUploadMeta, error) {
 	stdin := opts.Factory.IOStreams.In
-	if opts.Params == "-" && opts.Data == "-" {
-		return client.RawApiRequest{}, output.ErrValidation("--params and --data cannot both read from stdin (-)")
+
+	// Validate --file mutual exclusions first.
+	if err := cmdutil.ValidateFileFlag(opts.File, opts.Params, opts.Data, opts.Output, opts.PageAll, opts.Method); err != nil {
+		return client.RawApiRequest{}, nil, err
 	}
+
+	// stdin conflict: --params and --data cannot both read from stdin, regardless of --file.
+	if opts.Params == "-" && opts.Data == "-" {
+		return client.RawApiRequest{}, nil, output.ErrValidation("--params and --data cannot both read from stdin (-)")
+	}
+
 	params, err := cmdutil.ParseJSONMap(opts.Params, "--params", stdin)
 	if err != nil {
-		return client.RawApiRequest{}, err
-	}
-	data, err := cmdutil.ParseOptionalBody(opts.Method, opts.Data, stdin)
-	if err != nil {
-		return client.RawApiRequest{}, err
+		return client.RawApiRequest{}, nil, err
 	}
 	if opts.PageSize > 0 {
 		params["page_size"] = opts.PageSize
@@ -128,14 +135,53 @@ func buildAPIRequest(opts *APIOptions) (client.RawApiRequest, error) {
 		Method: opts.Method,
 		URL:    normalisePath(opts.Path),
 		Params: params,
-		Data:   data,
 		As:     opts.As,
 	}
-	// WithFileDownload tells the SDK to skip CodeError parsing on 200 OK.
-	if opts.Output != "" {
-		request.ExtraOpts = append(request.ExtraOpts, larkcore.WithFileDownload())
+
+	if opts.File != "" {
+		// File upload path: build formdata.
+		fieldName, filePath, isStdin := cmdutil.ParseFileFlag(opts.File, "file")
+
+		// Parse --data as JSON map for form fields (not as body).
+		var dataFields any
+		if opts.Data != "" {
+			dataFields, err = cmdutil.ParseOptionalBody(opts.Method, opts.Data, stdin)
+			if err != nil {
+				return client.RawApiRequest{}, nil, err
+			}
+			if _, ok := dataFields.(map[string]any); !ok {
+				return client.RawApiRequest{}, nil, output.ErrValidation("--data must be a JSON object when used with --file")
+			}
+		}
+
+		if opts.DryRun {
+			return request, &cmdutil.FileUploadMeta{
+				FieldName: fieldName, FilePath: filePath, FormFields: dataFields,
+			}, nil
+		}
+
+		fd, err := cmdutil.BuildFormdata(
+			opts.Factory.ResolveFileIO(opts.Ctx),
+			fieldName, filePath, isStdin, stdin, dataFields,
+		)
+		if err != nil {
+			return client.RawApiRequest{}, nil, err
+		}
+		request.Data = fd
+		request.ExtraOpts = append(request.ExtraOpts, larkcore.WithFileUpload())
+	} else {
+		// Normal path: JSON body.
+		data, err := cmdutil.ParseOptionalBody(opts.Method, opts.Data, stdin)
+		if err != nil {
+			return client.RawApiRequest{}, nil, err
+		}
+		request.Data = data
+		if opts.Output != "" {
+			request.ExtraOpts = append(request.ExtraOpts, larkcore.WithFileDownload())
+		}
 	}
-	return request, nil
+
+	return request, nil, nil
 }
 
 func apiRun(opts *APIOptions) error {
@@ -153,7 +199,7 @@ func apiRun(opts *APIOptions) error {
 		return err
 	}
 
-	request, err := buildAPIRequest(opts)
+	request, fileMeta, err := buildAPIRequest(opts)
 	if err != nil {
 		return err
 	}
@@ -164,6 +210,9 @@ func apiRun(opts *APIOptions) error {
 	}
 
 	if opts.DryRun {
+		if fileMeta != nil {
+			return cmdutil.PrintDryRunWithFile(f.IOStreams.Out, request, config, opts.Format, fileMeta.FieldName, fileMeta.FilePath, fileMeta.FormFields)
+		}
 		return apiDryRun(f, request, config, opts.Format)
 	}
 	// Identity info is now included in the JSON envelope; skip stderr printing.

cmd/api/api_test.go

@@ -5,6 +5,7 @@ package api
 
 import (
 	"errors"
+	"os"
 	"sort"
 	"strings"
 	"testing"
@@ -179,6 +180,24 @@ func TestApiValidArgsFunction(t *testing.T) {
 	}
 }
 
+func TestNewCmdApi_StrictModeHidesAsFlag(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
+		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu, SupportedIdentities: 2,
+	})
+
+	cmd := NewCmdApi(f, nil)
+	flag := cmd.Flags().Lookup("as")
+	if flag == nil {
+		t.Fatal("expected --as flag to be registered")
+	}
+	if !flag.Hidden {
+		t.Fatal("expected --as flag to be hidden in strict mode")
+	}
+	if got := flag.DefValue; got != "bot" {
+		t.Fatalf("default value = %q, want %q", got, "bot")
+	}
+}
+
 func TestApiCmd_PageLimitDefault(t *testing.T) {
 	f, _, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
 		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu,
@@ -706,3 +725,98 @@ func TestApiCmd_MethodUppercase(t *testing.T) {
 		t.Errorf("expected method POST (uppercased), got %s", gotOpts.Method)
 	}
 }
+
+func TestApiCmd_FileFlagParsing(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
+		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu,
+	})
+	var gotOpts *APIOptions
+	cmd := NewCmdApi(f, func(opts *APIOptions) error {
+		gotOpts = opts
+		return nil
+	})
+	cmd.SetArgs([]string{"POST", "/open-apis/test", "--file", "image=photo.jpg", "--data", `{"image_type":"message"}`})
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if gotOpts.File != "image=photo.jpg" {
+		t.Errorf("expected File = %q, got %q", "image=photo.jpg", gotOpts.File)
+	}
+}
+
+func TestApiCmd_FileAndOutputConflict(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
+		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu,
+	})
+	cmd := NewCmdApi(f, func(opts *APIOptions) error {
+		return apiRun(opts)
+	})
+	cmd.SetArgs([]string{"POST", "/open-apis/test", "--as", "bot", "--file", "photo.jpg", "--output", "out.json"})
+	err := cmd.Execute()
+	if err == nil {
+		t.Fatal("expected error for --file with --output")
+	}
+	if !strings.Contains(err.Error(), "mutually exclusive") {
+		t.Errorf("expected mutual exclusion error, got: %v", err)
+	}
+}
+
+func TestApiCmd_FileWithGET(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
+		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu,
+	})
+	cmd := NewCmdApi(f, func(opts *APIOptions) error {
+		return apiRun(opts)
+	})
+	cmd.SetArgs([]string{"GET", "/open-apis/test", "--as", "bot", "--file", "photo.jpg"})
+	err := cmd.Execute()
+	if err == nil {
+		t.Fatal("expected error for --file with GET")
+	}
+	if !strings.Contains(err.Error(), "requires POST") {
+		t.Errorf("expected method error, got: %v", err)
+	}
+}
+
+func TestApiCmd_FileStdinConflictWithData(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
+		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu,
+	})
+	cmd := NewCmdApi(f, func(opts *APIOptions) error {
+		return apiRun(opts)
+	})
+	cmd.SetArgs([]string{"POST", "/open-apis/test", "--as", "bot", "--file", "-", "--data", "-"})
+	err := cmd.Execute()
+	if err == nil {
+		t.Fatal("expected error for --file stdin with --data stdin")
+	}
+	if !strings.Contains(err.Error(), "cannot both read from stdin") {
+		t.Errorf("expected stdin conflict error, got: %v", err)
+	}
+}
+
+func TestApiCmd_DryRunWithFile(t *testing.T) {
+	tmpDir := t.TempDir()
+	tmpFile := tmpDir + "/test.jpg"
+	if err := os.WriteFile(tmpFile, []byte("fake-image"), 0600); err != nil {
+		t.Fatal(err)
+	}
+
+	f, stdout, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
+		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu,
+	})
+	cmd := NewCmdApi(f, nil)
+	cmd.SetArgs([]string{"POST", "/open-apis/im/v1/images", "--file", "image=" + tmpFile, "--data", `{"image_type":"message"}`, "--dry-run", "--as", "bot"})
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, "image") {
+		t.Errorf("expected dry-run output to mention file field, got: %s", out)
+	}
+	if !strings.Contains(out, "Dry Run") {
+		t.Errorf("expected dry-run header, got: %s", out)
+	}
+}

cmd/auth/login.go

@@ -72,7 +72,7 @@ browser. Run it in the background and retrieve the verification URL from its out
 	cmd.Flags().BoolVar(&opts.NoWait, "no-wait", false, "initiate device authorization and return immediately; use --device-code to complete")
 	cmd.Flags().StringVar(&opts.DeviceCode, "device-code", "", "poll and complete authorization with a device code from a previous --no-wait call")
 
-	_ = cmd.RegisterFlagCompletionFunc("domain", func(_ *cobra.Command, _ []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+	cmdutil.RegisterFlagCompletion(cmd, "domain", func(_ *cobra.Command, _ []string, toComplete string) ([]string, cobra.ShellCompDirective) {
 		return completeDomain(toComplete), cobra.ShellCompDirectiveNoFileComp
 	})
 
@@ -134,18 +134,7 @@ func authLoginRun(opts *LoginOptions) error {
 	// Expand --domain all to all available domains (from_meta projects + shortcut services)
 	for _, d := range selectedDomains {
 		if strings.EqualFold(d, "all") {
-			domainSet := make(map[string]bool)
-			for _, p := range registry.ListFromMetaProjects() {
-				domainSet[p] = true
-			}
-			for _, sc := range shortcuts.AllShortcuts() {
-				domainSet[sc.Service] = true
-			}
-			selectedDomains = make([]string, 0, len(domainSet))
-			for d := range domainSet {
-				selectedDomains = append(selectedDomains, d)
-			}
-			sort.Strings(selectedDomains)
+			selectedDomains = sortedKnownDomains()
 			break
 		}
 	}
@@ -451,6 +440,8 @@ func findProfileByName(multi *core.MultiAppConfig, profileName string) *core.App
 
 // collectScopesForDomains collects API scopes (from from_meta projects) and
 // shortcut scopes for the given domain names.
+// Domains with auth_domain children are automatically expanded to include
+// their children's scopes.
 func collectScopesForDomains(domains []string, identity string) []string {
 	scopeSet := make(map[string]bool)
 
@@ -459,11 +450,16 @@ func collectScopesForDomains(domains []string, identity string) []string {
 		scopeSet[s] = true
 	}
 
-	// 2. Shortcut scopes matching by Service (only include shortcuts supporting the identity)
+	// 2. Expand domains: include auth_domain children
 	domainSet := make(map[string]bool, len(domains))
 	for _, d := range domains {
 		domainSet[d] = true
+		for _, child := range registry.GetAuthChildren(d) {
+			domainSet[child] = true
+		}
 	}
+
+	// 3. Shortcut scopes matching by Service (only include shortcuts supporting the identity)
 	for _, sc := range shortcuts.AllShortcuts() {
 		if domainSet[sc.Service] && shortcutSupportsIdentity(sc, identity) {
 			for _, s := range sc.ScopesForIdentity(identity) {
@@ -472,7 +468,7 @@ func collectScopesForDomains(domains []string, identity string) []string {
 		}
 	}
 
-	// 3. Deduplicate and sort
+	// 4. Deduplicate and sort
 	result := make([]string, 0, len(scopeSet))
 	for s := range scopeSet {
 		result = append(result, s)
@@ -481,14 +477,20 @@ func collectScopesForDomains(domains []string, identity string) []string {
 	return result
 }
 
-// allKnownDomains returns all valid domain names (from_meta projects + shortcut services).
+// allKnownDomains returns all valid auth domain names (from_meta projects +
+// shortcut services), excluding domains that have auth_domain set (they are
+// folded into their parent domain).
 func allKnownDomains() map[string]bool {
 	domains := make(map[string]bool)
 	for _, p := range registry.ListFromMetaProjects() {
-		domains[p] = true
+		if !registry.HasAuthDomain(p) {
+			domains[p] = true
+		}
 	}
 	for _, sc := range shortcuts.AllShortcuts() {
-		domains[sc.Service] = true
+		if !registry.HasAuthDomain(sc.Service) {
+			domains[sc.Service] = true
+		}
 	}
 	return domains
 }

cmd/auth/login_interactive.go

@@ -34,8 +34,12 @@ func getDomainMetadata(lang string) []domainMeta {
 	seen := make(map[string]bool)
 	var domains []domainMeta
 
-	// 1. Domains from from_meta projects
+	// 1. Domains from from_meta projects (skip domains with auth_domain)
 	for _, project := range registry.ListFromMetaProjects() {
+		if registry.HasAuthDomain(project) {
+			seen[project] = true
+			continue
+		}
 		dm := buildDomainMeta(project, lang)
 		domains = append(domains, dm)
 		seen[project] = true
@@ -52,13 +56,14 @@ func getDomainMetadata(lang string) []domainMeta {
 	}
 
 	// 3. Auto-discover remaining shortcut services that are listed as shortcut-only domains
+	//    (skip domains with auth_domain — they are folded into their parent)
 	shortcutOnlySet := make(map[string]bool)
 	for _, n := range shortcutOnlyNames {
 		shortcutOnlySet[n] = true
 	}
 	for _, sc := range shortcuts.AllShortcuts() {
 		if !seen[sc.Service] {
-			if shortcutOnlySet[sc.Service] {
+			if shortcutOnlySet[sc.Service] && !registry.HasAuthDomain(sc.Service) {
 				dm := buildDomainMeta(sc.Service, lang)
 				domains = append(domains, dm)
 			}
@@ -179,27 +184,6 @@ func runInteractiveLogin(ios *cmdutil.IOStreams, lang string, msg *loginMsg) (*i
 	}
 	fmt.Fprintf(ios.ErrOut, msg.SummaryScopes, len(scopes), scopePreview)
 
-	// Phase 2: confirmation
-	var confirmed bool
-	form2 := huh.NewForm(
-		huh.NewGroup(
-			huh.NewConfirm().
-				Title(msg.ConfirmAuth).
-				Value(&confirmed),
-		),
-	).WithTheme(cmdutil.ThemeFeishu())
-
-	if err := form2.Run(); err != nil {
-		if err == huh.ErrUserAborted {
-			return nil, output.ErrBare(1)
-		}
-		return nil, err
-	}
-
-	if !confirmed {
-		return nil, output.ErrBare(1)
-	}
-
 	return &interactiveResult{
 		Domains:    selectedDomains,
 		ScopeLevel: permLevel,

cmd/auth/login_messages.go

@@ -24,11 +24,11 @@ type loginMsg struct {
 	WaitingAuth        string
 	AuthSuccess        string
 	LoginSuccess       string
+	AuthorizedUser     string
 	ScopeMismatch      string
 	ScopeHint          string
 	RequestedScopes    string
 	NewlyGrantedScopes string
-	MissingScopes      string
 	NoScopes           string
 	StatusHint         string
 
@@ -58,13 +58,13 @@ var loginMsgZh = &loginMsg{
 
 	OpenURL:            "在浏览器中打开以下链接进行认证:\n\n",
 	WaitingAuth:        "等待用户授权...",
-	AuthSuccess:        "授权成功，正在获取用户信息...",
-	LoginSuccess:       "登录成功! 用户: %s (%s)",
-	ScopeMismatch:      "授权完成，但以下请求 scopes 未被授予: %s",
+	AuthSuccess:        "已收到授权确认，正在获取用户信息并校验授权结果...",
+	LoginSuccess:       "授权成功! 用户: %s (%s)",
+	AuthorizedUser:     "当前授权账号: %s (%s)",
+	ScopeMismatch:      "授权结果异常: 以下请求 scopes 未被授予: %s",
 	ScopeHint:          "以上结果是本次授权请求用户最终确认后的结果，请勿持续重试；Scopes 未授予的原因是多样的，如 scope 被禁用；具体原因已通过授权页提示用户。可执行 `lark-cli auth status` 查看账号当前已授予的全部 scopes；",
 	RequestedScopes:    "  本次请求 scopes: %s\n",
 	NewlyGrantedScopes: "  本次新授予 scopes: %s\n",
-	MissingScopes:      "  本次未授予 scopes: %s\n",
 	NoScopes:           "（空）",
 	StatusHint:         "可执行 `lark-cli auth status` 查看账号当前已授予的全部 scopes；",
 
@@ -93,13 +93,13 @@ var loginMsgEn = &loginMsg{
 
 	OpenURL:            "Open this URL in your browser to authenticate:\n\n",
 	WaitingAuth:        "Waiting for user authorization...",
-	AuthSuccess:        "Authorization successful, fetching user info...",
-	LoginSuccess:       "Login successful! User: %s (%s)",
-	ScopeMismatch:      "authorization completed, but these requested scopes were not granted: %s",
+	AuthSuccess:        "Authorization confirmed, fetching user info and validating granted scopes...",
+	LoginSuccess:       "Authorization successful! User: %s (%s)",
+	AuthorizedUser:     "Authorized account: %s (%s)",
+	ScopeMismatch:      "authorization result is abnormal: these requested scopes were not granted: %s",
 	ScopeHint:          "The result above is the user's final confirmation for this authorization request. Do not retry continuously. Scopes may be not granted for various reasons, such as a scope being disabled. The specific reason has already been shown to the user on the authorization page. Run `lark-cli auth status` to inspect all scopes currently granted to the account.",
 	RequestedScopes:    "  Requested scopes: %s\n",
 	NewlyGrantedScopes: "  Newly granted scopes: %s\n",
-	MissingScopes:      "  Not granted scopes: %s\n",
 	NoScopes:           "(none)",
 	StatusHint:         "Run `lark-cli auth status` to inspect all scopes currently granted to the account.",
 

cmd/auth/login_messages_test.go

@@ -69,6 +69,12 @@ func TestLoginMsg_FormatStrings(t *testing.T) {
 			t.Errorf("%s LoginSuccess has no format verb", lang)
 		}
 
+		// AuthorizedUser should contain two %s placeholders (userName, openId)
+		got = fmt.Sprintf(msg.AuthorizedUser, "testuser", "ou_123")
+		if got == msg.AuthorizedUser {
+			t.Errorf("%s AuthorizedUser has no format verb", lang)
+		}
+
 		// SummaryDomains should contain %s
 		got = fmt.Sprintf(msg.SummaryDomains, "calendar, task")
 		if got == msg.SummaryDomains {

cmd/auth/login_result.go

@@ -128,7 +128,7 @@ func emptyIfNil(s []string) []string {
 	return s
 }
 
-// writeLoginScopeBreakdown renders the requested/newly granted/missing scope
+// writeLoginScopeBreakdown renders the requested/newly granted scope
 // breakdown to stderr.
 func writeLoginScopeBreakdown(errOut *cmdutil.IOStreams, msg *loginMsg, summary *loginScopeSummary) {
 	if summary == nil {
@@ -136,7 +136,6 @@ func writeLoginScopeBreakdown(errOut *cmdutil.IOStreams, msg *loginMsg, summary
 	}
 	fmt.Fprintf(errOut.ErrOut, msg.RequestedScopes, formatScopeList(summary.Requested, msg.NoScopes))
 	fmt.Fprintf(errOut.ErrOut, msg.NewlyGrantedScopes, formatScopeList(summary.NewlyGranted, msg.NoScopes))
-	fmt.Fprintf(errOut.ErrOut, msg.MissingScopes, formatScopeList(summary.Missing, msg.NoScopes))
 }
 
 // writeLoginSuccess emits the successful login payload in either JSON or text
@@ -190,11 +189,11 @@ func handleLoginScopeIssue(opts *LoginOptions, msg *loginMsg, f *cmdutil.Factory
 
 	fmt.Fprintln(f.IOStreams.ErrOut)
 	if loginSucceeded {
-		output.PrintSuccess(f.IOStreams.ErrOut, fmt.Sprintf(msg.LoginSuccess, userName, openId))
-	} else {
 		fmt.Fprintln(f.IOStreams.ErrOut, issue.Message)
-	}
-	if loginSucceeded {
+		if msg.AuthorizedUser != "" {
+			fmt.Fprintf(f.IOStreams.ErrOut, "%s\n", fmt.Sprintf(msg.AuthorizedUser, userName, openId))
+		}
+	} else {
 		fmt.Fprintln(f.IOStreams.ErrOut, issue.Message)
 	}
 	writeLoginScopeBreakdown(f.IOStreams, msg, issue.Summary)

cmd/auth/login_test.go

@@ -363,7 +363,7 @@ func TestWriteLoginSuccess_JSONIncludesScopeDiff(t *testing.T) {
 func TestHandleLoginScopeIssue_NonJSONAlignsWithLoginSuccess(t *testing.T) {
 	f, _, stderr, _ := cmdutil.TestFactory(t, nil)
 	err := handleLoginScopeIssue(&LoginOptions{}, getLoginMsg("zh"), f, &loginScopeIssue{
-		Message: "授权完成，但以下请求 scopes 未被授予: im:message:send",
+		Message: "授权结果异常: 以下请求 scopes 未被授予: im:message:send",
 		Hint:    "以上结果是本次授权请求用户最终确认后的结果，请勿持续重试；Scopes 未授予的原因是多样的，如 scope 被禁用；具体原因已通过授权页提示用户。可执行 `lark-cli auth status` 查看账号当前已授予的全部 scopes；",
 		Summary: &loginScopeSummary{
 			Requested: []string{"im:message:send"},
@@ -376,11 +376,10 @@ func TestHandleLoginScopeIssue_NonJSONAlignsWithLoginSuccess(t *testing.T) {
 	}
 	got := stderr.String()
 	for _, want := range []string{
-		"OK: 登录成功! 用户: tester (ou_user)",
-		"授权完成，但以下请求 scopes 未被授予: im:message:send",
+		"授权结果异常: 以下请求 scopes 未被授予: im:message:send",
+		"当前授权账号: tester (ou_user)",
 		"本次请求 scopes: im:message:send",
 		"本次新授予 scopes: （空）",
-		"本次未授予 scopes: im:message:send",
 		"以上结果是本次授权请求用户最终确认后的结果，请勿持续重试",
 		"scope 被禁用",
 		"lark-cli auth status",
@@ -392,15 +391,18 @@ func TestHandleLoginScopeIssue_NonJSONAlignsWithLoginSuccess(t *testing.T) {
 	if strings.Contains(got, "最终已授权 scopes:") {
 		t.Fatalf("stderr should not contain final granted scopes, got:\n%s", got)
 	}
-	if strings.Contains(got, "ERROR:") {
-		t.Fatalf("stderr should not contain error prefix, got:\n%s", got)
+	if strings.Contains(got, "授权成功") {
+		t.Fatalf("stderr should not contain success wording, got:\n%s", got)
+	}
+	if strings.Contains(got, "本次未授予 scopes:") {
+		t.Fatalf("stderr should not duplicate missing scopes, got:\n%s", got)
 	}
 }
 
 func TestHandleLoginScopeIssue_JSONAlignsWithLoginSuccess(t *testing.T) {
 	f, stdout, _, _ := cmdutil.TestFactory(t, nil)
 	err := handleLoginScopeIssue(&LoginOptions{JSON: true}, getLoginMsg("en"), f, &loginScopeIssue{
-		Message: "authorization completed, but these requested scopes were not granted: im:message:send",
+		Message: "authorization result is abnormal: these requested scopes were not granted: im:message:send",
 		Hint:    "Granted scopes: base:app:copy. Check app scopes.",
 		Summary: &loginScopeSummary{
 			Requested: []string{"im:message:send"},
@@ -469,13 +471,13 @@ func TestWriteLoginSuccess_TextOutputScenarios(t *testing.T) {
 				Granted:        []string{"im:message:send", "im:message:reply"},
 			},
 			expectedPresent: []string{
-				"登录成功! 用户: tester (ou_user)",
+				"授权成功! 用户: tester (ou_user)",
 				"本次请求 scopes: im:message:send im:message:reply",
 				"本次新授予 scopes: im:message:send",
-				"本次未授予 scopes: （空）",
 				"可执行 `lark-cli auth status` 查看账号当前已授予的全部 scopes；",
 			},
 			expectedAbsent: []string{
+				"本次未授予 scopes:",
 				"最终已授权 scopes:",
 				"已有 scopes:",
 			},
@@ -490,10 +492,10 @@ func TestWriteLoginSuccess_TextOutputScenarios(t *testing.T) {
 			expectedPresent: []string{
 				"本次请求 scopes: im:message:send",
 				"本次新授予 scopes: （空）",
-				"本次未授予 scopes: （空）",
 				"可执行 `lark-cli auth status` 查看账号当前已授予的全部 scopes；",
 			},
 			expectedAbsent: []string{
+				"本次未授予 scopes:",
 				"最终已授权 scopes:",
 				"已有 scopes:",
 			},
@@ -508,9 +510,9 @@ func TestWriteLoginSuccess_TextOutputScenarios(t *testing.T) {
 			expectedPresent: []string{
 				"本次请求 scopes: im:message:send im:message:reply",
 				"本次新授予 scopes: （空）",
-				"本次未授予 scopes: im:message:send",
 			},
 			expectedAbsent: []string{
+				"本次未授予 scopes:",
 				"已有 scopes:",
 				"最终已授权 scopes:",
 				"可执行 `lark-cli auth status` 查看账号当前已授予的全部 scopes；",
@@ -619,10 +621,9 @@ func TestAuthLoginRun_MissingRequestedScopeAlignsWithLoginSuccess(t *testing.T)
 	}
 	got := stderr.String()
 	for _, want := range []string{
-		"OK: 登录成功! 用户: tester (ou_user)",
-		"授权完成，但以下请求 scopes 未被授予: im:message:send",
+		"授权结果异常: 以下请求 scopes 未被授予: im:message:send",
+		"当前授权账号: tester (ou_user)",
 		"本次请求 scopes: im:message:send",
-		"本次未授予 scopes: im:message:send",
 		"以上结果是本次授权请求用户最终确认后的结果，请勿持续重试",
 		"scope 被禁用",
 		"lark-cli auth status",
@@ -634,6 +635,12 @@ func TestAuthLoginRun_MissingRequestedScopeAlignsWithLoginSuccess(t *testing.T)
 	if strings.Contains(got, "最终已授权 scopes:") {
 		t.Fatalf("stderr should not contain final granted scopes, got:\n%s", got)
 	}
+	if strings.Contains(got, "OK: 授权成功") {
+		t.Fatalf("stderr should not contain success prefix when scopes are missing, got:\n%s", got)
+	}
+	if strings.Contains(got, "本次未授予 scopes:") {
+		t.Fatalf("stderr should not duplicate missing scopes, got:\n%s", got)
+	}
 	if strings.Contains(got, "ERROR:") {
 		t.Fatalf("stderr should not contain error prefix, got:\n%s", got)
 	}
@@ -743,7 +750,7 @@ func TestAuthLoginRun_DeviceCodeUsesCachedRequestedScopes(t *testing.T) {
 	}
 	got := stderr.String()
 	for _, want := range []string{
-		"OK: 登录成功! 用户: tester (ou_user)",
+		"OK: 授权成功! 用户: tester (ou_user)",
 		"本次请求 scopes: im:message:send",
 		"本次新授予 scopes: im:message:send",
 		"可执行 `lark-cli auth status` 查看账号当前已授予的全部 scopes；",
@@ -771,16 +778,18 @@ func TestWriteLoginSuccess_TextOutputEnglishIncludesStatusHintWhenNoMissingScope
 
 	got := stderr.String()
 	for _, want := range []string{
-		"Login successful! User: tester (ou_user)",
+		"Authorization successful! User: tester (ou_user)",
 		"Requested scopes: im:message:send",
 		"Newly granted scopes: im:message:send",
-		"Not granted scopes: (none)",
 		"Run `lark-cli auth status` to inspect all scopes currently granted to the account.",
 	} {
 		if !strings.Contains(got, want) {
 			t.Fatalf("stderr missing %q, got:\n%s", want, got)
 		}
 	}
+	if strings.Contains(got, "Not granted scopes:") {
+		t.Fatalf("stderr should not contain not granted scopes, got:\n%s", got)
+	}
 }
 
 func TestAuthLoginRun_DeviceCodeTokenNilCleansScopeCache(t *testing.T) {
@@ -903,3 +912,37 @@ func TestGetDomainMetadata_ExcludesEvent(t *testing.T) {
 		}
 	}
 }
+
+func TestAllKnownDomains_ExcludesAuthDomainChildren(t *testing.T) {
+	domains := allKnownDomains()
+	if domains["whiteboard"] {
+		t.Error("whiteboard should not appear in known auth domains (it has auth_domain=docs)")
+	}
+	if !domains["docs"] {
+		t.Error("docs should still be a known auth domain")
+	}
+}
+
+func TestCollectScopesForDomains_ExpandsAuthDomainChildren(t *testing.T) {
+	scopes := collectScopesForDomains([]string{"docs"}, "user")
+	// docs domain should include whiteboard shortcut scopes (board:whiteboard:*)
+	found := false
+	for _, s := range scopes {
+		if strings.HasPrefix(s, "board:whiteboard:") {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Error("collectScopesForDomains([docs]) should include whiteboard scopes (board:whiteboard:*)")
+	}
+}
+
+func TestGetDomainMetadata_ExcludesAuthDomainChildren(t *testing.T) {
+	domains := getDomainMetadata("zh")
+	for _, dm := range domains {
+		if dm.Name == "whiteboard" {
+			t.Error("whiteboard should not appear in interactive domain list (has auth_domain=docs)")
+		}
+	}
+}

cmd/build.go

@@ -0,0 +1,129 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	"context"
+	"io"
+
+	"github.com/larksuite/cli/cmd/api"
+	"github.com/larksuite/cli/cmd/auth"
+	"github.com/larksuite/cli/cmd/completion"
+	cmdconfig "github.com/larksuite/cli/cmd/config"
+	"github.com/larksuite/cli/cmd/doctor"
+	"github.com/larksuite/cli/cmd/profile"
+	"github.com/larksuite/cli/cmd/schema"
+	"github.com/larksuite/cli/cmd/service"
+	cmdupdate "github.com/larksuite/cli/cmd/update"
+	"github.com/larksuite/cli/internal/build"
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/keychain"
+	"github.com/larksuite/cli/shortcuts"
+	"github.com/spf13/cobra"
+)
+
+// BuildOption configures optional aspects of the command tree construction.
+type BuildOption func(*buildConfig)
+
+type buildConfig struct {
+	streams  *cmdutil.IOStreams
+	keychain keychain.KeychainAccess
+	globals  GlobalOptions
+}
+
+// WithIO sets the IO streams for the CLI by wrapping raw reader/writers.
+// Terminal detection is delegated to cmdutil.NewIOStreams.
+func WithIO(in io.Reader, out, errOut io.Writer) BuildOption {
+	return func(c *buildConfig) {
+		c.streams = cmdutil.NewIOStreams(in, out, errOut)
+	}
+}
+
+// WithKeychain sets the secret storage backend. If not provided, the platform keychain is used.
+func WithKeychain(kc keychain.KeychainAccess) BuildOption {
+	return func(c *buildConfig) {
+		c.keychain = kc
+	}
+}
+
+// HideProfile sets the visibility policy for the root-level --profile flag.
+// When hide is true the flag stays registered (so existing invocations still
+// parse) but is omitted from help and shell completion. Typically called as
+// HideProfile(isSingleAppMode()).
+func HideProfile(hide bool) BuildOption {
+	return func(c *buildConfig) {
+		c.globals.HideProfile = hide
+	}
+}
+
+// Build constructs the full command tree without executing.
+// Returns only the cobra.Command; Factory is internal.
+// Use Execute for the standard production entry point.
+func Build(ctx context.Context, inv cmdutil.InvocationContext, opts ...BuildOption) *cobra.Command {
+	_, rootCmd := buildInternal(ctx, inv, opts...)
+	return rootCmd
+}
+
+// buildInternal is a pure assembly function: it wires the command tree from
+// inv and BuildOptions alone. Any state-dependent decision (disk, network,
+// env) belongs in the caller and must be threaded in via BuildOption.
+func buildInternal(ctx context.Context, inv cmdutil.InvocationContext, opts ...BuildOption) (*cmdutil.Factory, *cobra.Command) {
+	// cfg.globals.Profile is left zero here; it's bound to the --profile
+	// flag in RegisterGlobalFlags and filled by cobra's parse step.
+	cfg := &buildConfig{}
+	for _, o := range opts {
+		if o != nil {
+			o(cfg)
+		}
+	}
+	// Default streams when WithIO is not supplied so the root command's
+	// SetIn/Out/Err calls below don't deref nil. NewDefault also normalizes
+	// partial streams internally; keep both in sync so cfg.streams reflects
+	// the same values the Factory ends up using.
+	if cfg.streams == nil {
+		cfg.streams = cmdutil.SystemIO()
+	}
+
+	f := cmdutil.NewDefault(cfg.streams, inv)
+	if cfg.keychain != nil {
+		f.Keychain = cfg.keychain
+	}
+	rootCmd := &cobra.Command{
+		Use:     "lark-cli",
+		Short:   "Lark/Feishu CLI — OAuth authorization, UAT management, API calls",
+		Long:    rootLong,
+		Version: build.Version,
+	}
+
+	rootCmd.SetContext(ctx)
+	rootCmd.SetIn(cfg.streams.In)
+	rootCmd.SetOut(cfg.streams.Out)
+	rootCmd.SetErr(cfg.streams.ErrOut)
+
+	installTipsHelpFunc(rootCmd)
+	rootCmd.SilenceErrors = true
+
+	RegisterGlobalFlags(rootCmd.PersistentFlags(), &cfg.globals)
+	rootCmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
+		cmd.SilenceUsage = true
+	}
+
+	rootCmd.AddCommand(cmdconfig.NewCmdConfig(f))
+	rootCmd.AddCommand(auth.NewCmdAuth(f))
+	rootCmd.AddCommand(profile.NewCmdProfile(f))
+	rootCmd.AddCommand(doctor.NewCmdDoctor(f))
+	rootCmd.AddCommand(api.NewCmdApiWithContext(ctx, f, nil))
+	rootCmd.AddCommand(schema.NewCmdSchema(f, nil))
+	rootCmd.AddCommand(completion.NewCmdCompletion(f))
+	rootCmd.AddCommand(cmdupdate.NewCmdUpdate(f))
+	service.RegisterServiceCommandsWithContext(ctx, rootCmd, f)
+	shortcuts.RegisterShortcutsWithContext(ctx, rootCmd, f)
+
+	// Prune commands incompatible with strict mode.
+	if mode := f.ResolveStrictMode(ctx); mode.IsActive() {
+		pruneForStrictMode(rootCmd, mode)
+	}
+
+	return f, rootCmd
+}

cmd/build_api_test.go

@@ -0,0 +1,63 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	"bytes"
+	"context"
+	"testing"
+
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/vfs"
+)
+
+// noopKeychain is a zero-side-effect KeychainAccess for exercising
+// WithKeychain without touching the platform keychain.
+type noopKeychain struct{}
+
+func (noopKeychain) Get(service, account string) (string, error) { return "", nil }
+func (noopKeychain) Set(service, account, value string) error    { return nil }
+func (noopKeychain) Remove(service, account string) error        { return nil }
+
+// TestBuild_ExternalAPI asserts the library surface that external consumers
+// (e.g. cli-server) depend on: Build composes a root command from an
+// InvocationContext plus BuildOptions (WithIO, WithKeychain, HideProfile),
+// and SetDefaultFS swaps the global VFS. This test is the contract guard.
+func TestBuild_ExternalAPI(t *testing.T) {
+	// Exercise SetDefaultFS both directions. Passing nil restores the OS FS.
+	SetDefaultFS(vfs.OsFs{})
+	SetDefaultFS(nil)
+
+	var in, out, errOut bytes.Buffer
+	rootCmd := Build(
+		context.Background(),
+		cmdutil.InvocationContext{},
+		WithIO(&in, &out, &errOut),
+		WithKeychain(noopKeychain{}),
+		HideProfile(true),
+	)
+
+	if rootCmd == nil {
+		t.Fatal("Build returned nil root command")
+	}
+	if rootCmd.Use != "lark-cli" {
+		t.Errorf("rootCmd.Use = %q, want %q", rootCmd.Use, "lark-cli")
+	}
+	if len(rootCmd.Commands()) == 0 {
+		t.Error("Build produced a root command with no subcommands")
+	}
+}
+
+// TestBuild_NoOptions guards against regression of the nil-streams panic:
+// calling Build without WithIO must fall back to SystemIO rather than
+// deref nil at rootCmd.SetIn/Out/Err.
+func TestBuild_NoOptions(t *testing.T) {
+	rootCmd := Build(context.Background(), cmdutil.InvocationContext{})
+	if rootCmd == nil {
+		t.Fatal("Build returned nil root command")
+	}
+	if rootCmd.Use != "lark-cli" {
+		t.Errorf("rootCmd.Use = %q, want %q", rootCmd.Use, "lark-cli")
+	}
+}

cmd/config/init_interactive.go

@@ -177,17 +177,26 @@ func runCreateAppFlow(ctx context.Context, f *cmdutil.Factory, brandOverride cor
 	// Step 2: Build and display verification URL + QR code
 	verificationURL := larkauth.BuildVerificationURL(authResp.VerificationUriComplete, build.Version)
 
-	// Show QR code in terminal
-	qr, qrErr := qrcode.New(verificationURL, qrcode.Medium)
-	if qrErr == nil {
-		fmt.Fprint(f.IOStreams.ErrOut, qr.ToSmallString(false))
+	// Branch on TTY: human-friendly copy in interactive terminals,
+	// preserve original copy for AI / non-interactive callers.
+	if f.IOStreams.IsTerminal {
+		fmt.Fprintf(f.IOStreams.ErrOut, "%s", msg.ScanQRCode)
+		qr, qrErr := qrcode.New(verificationURL, qrcode.Medium)
+		if qrErr == nil {
+			fmt.Fprint(f.IOStreams.ErrOut, qr.ToSmallString(false))
+		}
+		fmt.Fprintf(f.IOStreams.ErrOut, "%s", msg.ScanOrOpenLink)
+		fmt.Fprintf(f.IOStreams.ErrOut, "  %s\n\n", verificationURL)
+		fmt.Fprintf(f.IOStreams.ErrOut, "%s\n", msg.WaitingForScan)
+	} else {
+		qr, qrErr := qrcode.New(verificationURL, qrcode.Medium)
+		if qrErr == nil {
+			fmt.Fprint(f.IOStreams.ErrOut, qr.ToSmallString(false))
+		}
+		fmt.Fprintf(f.IOStreams.ErrOut, "%s", msg.OpenLinkNonTTY)
+		fmt.Fprintf(f.IOStreams.ErrOut, "  %s\n\n", verificationURL)
+		fmt.Fprintf(f.IOStreams.ErrOut, "%s\n", msg.WaitingForScanNonTTY)
 	}
-
-	fmt.Fprintf(f.IOStreams.ErrOut, "%s", msg.ScanOrOpenLink)
-	fmt.Fprintf(f.IOStreams.ErrOut, "  %s\n\n", verificationURL)
-
-	// Step 3: Poll for result
-	fmt.Fprintf(f.IOStreams.ErrOut, "%s\n", msg.WaitingForScan)
 	result, err := larkauth.PollAppRegistration(ctx, httpClient, core.BrandFeishu, authResp.DeviceCode, authResp.Interval, authResp.ExpiresIn, f.IOStreams.ErrOut)
 	if err != nil {
 		return nil, output.ErrAuth("%v", err)

cmd/config/init_messages.go

@@ -10,45 +10,56 @@ import (
 )
 
 type initMsg struct {
-	SelectAction       string
-	CreateNewApp       string
-	ConfigExistingApp  string
-	Platform           string
-	SelectPlatform     string
-	Feishu             string
-	ScanOrOpenLink     string
-	WaitingForScan     string
-	DetectedLarkTenant string
-	AppCreated         string
-	ConfigSaved        string
+	SelectAction      string
+	CreateNewApp      string
+	ConfigExistingApp string
+	Platform          string
+	SelectPlatform    string
+	Feishu            string
+	// TTY (interactive) variants
+	ScanQRCode     string // header shown above QR code
+	ScanOrOpenLink string // post-QR alt link prompt ("or open...")
+	WaitingForScan string // active polling indicator
+	// Non-TTY (AI / non-interactive) variants — preserve original copy
+	OpenLinkNonTTY       string // primary link prompt
+	WaitingForScanNonTTY string // passive waiting indicator
+	DetectedLarkTenant   string
+	AppCreated           string
+	ConfigSaved          string
 }
 
 var initMsgZh = &initMsg{
-	SelectAction:       "选择操作",
-	CreateNewApp:       "一键配置应用 (推荐) ",
-	ConfigExistingApp:  "手动输入应用凭证",
-	Platform:           "平台",
-	SelectPlatform:     "选择平台",
-	Feishu:             "飞书",
-	ScanOrOpenLink:     "\n打开以下链接配置应用:\n\n",
-	WaitingForScan:     "等待配置应用...",
-	DetectedLarkTenant: "[lark-cli] 检测到 Lark 租户，切换端点重试...",
-	AppCreated:         "应用配置成功! App ID: %s",
-	ConfigSaved:        "应用配置成功! App ID: %s",
+	SelectAction:         "选择操作",
+	CreateNewApp:         "一键配置应用 (推荐) ",
+	ConfigExistingApp:    "手动输入应用凭证",
+	Platform:             "平台",
+	SelectPlatform:       "选择平台",
+	Feishu:               "飞书",
+	ScanQRCode:           "\n使用飞书 / Lark 扫码配置应用：\n\n",
+	ScanOrOpenLink:       "\n或打开以下链接完成配置：\n",
+	WaitingForScan:       "正在获取你的应用配置结果...",
+	OpenLinkNonTTY:       "\n打开以下链接配置应用:\n\n",
+	WaitingForScanNonTTY: "等待配置应用...",
+	DetectedLarkTenant:   "[lark-cli] 检测到 Lark 租户，切换端点重试...",
+	AppCreated:           "应用配置成功! App ID: %s",
+	ConfigSaved:          "应用配置成功! App ID: %s",
 }
 
 var initMsgEn = &initMsg{
-	SelectAction:       "Select action",
-	CreateNewApp:       "Set up your app with one click (Recommended)",
-	ConfigExistingApp:  "Enter app credentials yourself",
-	Platform:           "Platform",
-	SelectPlatform:     "Select platform",
-	Feishu:             "Feishu",
-	ScanOrOpenLink:     "\nOpen the link below to configure app:\n\n",
-	WaitingForScan:     "Waiting for app configuration...",
-	DetectedLarkTenant: "[lark-cli] Detected Lark tenant, switching endpoint...",
-	AppCreated:         "App configured! App ID: %s",
-	ConfigSaved:        "App configured! App ID: %s",
+	SelectAction:         "Select action",
+	CreateNewApp:         "Set up your app with one click (Recommended)",
+	ConfigExistingApp:    "Enter app credentials yourself",
+	Platform:             "Platform",
+	SelectPlatform:       "Select platform",
+	Feishu:               "Feishu",
+	ScanQRCode:           "\nScan the QR code with Feishu/Lark:\n\n",
+	ScanOrOpenLink:       "\nOr open the link below in your browser:\n",
+	WaitingForScan:       "Fetching configuration results...",
+	OpenLinkNonTTY:       "\nOpen the link below to configure app:\n\n",
+	WaitingForScanNonTTY: "Waiting for app configuration...",
+	DetectedLarkTenant:   "[lark-cli] Detected Lark tenant, switching endpoint...",
+	AppCreated:           "App configured! App ID: %s",
+	ConfigSaved:          "App configured! App ID: %s",
 }
 
 func getInitMsg(lang string) *initMsg {

cmd/config/init_messages_test.go

@@ -48,17 +48,20 @@ func TestInitMsgEn_AllFieldsNonEmpty(t *testing.T) {
 func assertAllFieldsNonEmpty(t *testing.T, msg *initMsg, label string) {
 	t.Helper()
 	fields := map[string]string{
-		"SelectAction":       msg.SelectAction,
-		"CreateNewApp":       msg.CreateNewApp,
-		"ConfigExistingApp":  msg.ConfigExistingApp,
-		"Platform":           msg.Platform,
-		"SelectPlatform":     msg.SelectPlatform,
-		"Feishu":             msg.Feishu,
-		"ScanOrOpenLink":     msg.ScanOrOpenLink,
-		"WaitingForScan":     msg.WaitingForScan,
-		"DetectedLarkTenant": msg.DetectedLarkTenant,
-		"AppCreated":         msg.AppCreated,
-		"ConfigSaved":        msg.ConfigSaved,
+		"SelectAction":         msg.SelectAction,
+		"CreateNewApp":         msg.CreateNewApp,
+		"ConfigExistingApp":    msg.ConfigExistingApp,
+		"Platform":             msg.Platform,
+		"SelectPlatform":       msg.SelectPlatform,
+		"Feishu":               msg.Feishu,
+		"ScanQRCode":           msg.ScanQRCode,
+		"ScanOrOpenLink":       msg.ScanOrOpenLink,
+		"WaitingForScan":       msg.WaitingForScan,
+		"OpenLinkNonTTY":       msg.OpenLinkNonTTY,
+		"WaitingForScanNonTTY": msg.WaitingForScanNonTTY,
+		"DetectedLarkTenant":   msg.DetectedLarkTenant,
+		"AppCreated":           msg.AppCreated,
+		"ConfigSaved":          msg.ConfigSaved,
 	}
 	for name, val := range fields {
 		if val == "" {

cmd/diagnose_scope_test.go

@@ -0,0 +1,203 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"testing"
+
+	"github.com/larksuite/cli/internal/registry"
+	"github.com/larksuite/cli/shortcuts"
+	shortcutTypes "github.com/larksuite/cli/shortcuts/common"
+)
+
+// ── Data types ────────────────────────────────────────────────────────
+
+type diagMethodEntry struct {
+	Domain   string   `json:"domain"`
+	Type     string   `json:"type"`     // "api" or "shortcut"
+	Method   string   `json:"method"`   // "calendar.calendars.search" or "+agenda"
+	Scope    string   `json:"scope"`    // minimum-privilege scope
+	Identity []string `json:"identity"` // ["user"], ["bot"], or ["user","bot"]
+}
+
+type diagScopeInfo struct {
+	Scope      string `json:"scope"`
+	Recommend  bool   `json:"recommend"`
+	InPriority bool   `json:"in_priority"`
+}
+
+type diagOutput struct {
+	Methods []diagMethodEntry `json:"methods"`
+	Scopes  []diagScopeInfo   `json:"scopes"`
+}
+
+// ── Core logic ────────────────────────────────────────────────────────
+
+// diagAllKnownDomains returns sorted, deduplicated domain names from both
+// from_meta projects and shortcuts.
+func diagAllKnownDomains() []string {
+	seen := make(map[string]bool)
+	for _, p := range registry.ListFromMetaProjects() {
+		seen[p] = true
+	}
+	for _, s := range shortcuts.AllShortcuts() {
+		if s.Service != "" {
+			seen[s.Service] = true
+		}
+	}
+	result := make([]string, 0, len(seen))
+	for d := range seen {
+		result = append(result, d)
+	}
+	sort.Strings(result)
+	return result
+}
+
+// methodKey uniquely identifies a method+scope pair for merging identities.
+type methodKey struct {
+	domain string
+	typ    string
+	method string
+	scope  string
+}
+
+// diagBuild builds the full output: flat methods list (merged identities) + scopes.
+func diagBuild(domains []string) diagOutput {
+	recommend := registry.LoadAutoApproveSet()
+	identities := []string{"user", "bot"}
+
+	merged := make(map[methodKey]*diagMethodEntry)
+	allSC := shortcuts.AllShortcuts()
+
+	for _, domain := range domains {
+		for _, identity := range identities {
+			for _, ce := range registry.CollectCommandScopes([]string{domain}, identity) {
+				for _, scope := range ce.Scopes {
+					method := domain + "." + strings.ReplaceAll(ce.Command, " ", ".")
+					k := methodKey{domain, "api", method, scope}
+					if e, ok := merged[k]; ok {
+						e.Identity = appendUniq(e.Identity, identity)
+					} else {
+						merged[k] = &diagMethodEntry{
+							Domain: domain, Type: "api",
+							Method: method,
+							Scope:  scope, Identity: []string{identity},
+						}
+					}
+				}
+			}
+
+			for _, sc := range allSC {
+				if sc.Service != domain || !diagShortcutSupportsIdentity(&sc, identity) {
+					continue
+				}
+				for _, scope := range sc.ScopesForIdentity(identity) {
+					k := methodKey{domain, "shortcut", sc.Command, scope}
+					if e, ok := merged[k]; ok {
+						e.Identity = appendUniq(e.Identity, identity)
+					} else {
+						merged[k] = &diagMethodEntry{
+							Domain: domain, Type: "shortcut",
+							Method: sc.Command,
+							Scope:  scope, Identity: []string{identity},
+						}
+					}
+				}
+			}
+		}
+	}
+
+	methods := make([]diagMethodEntry, 0, len(merged))
+	scopeSet := make(map[string]bool)
+	for _, e := range merged {
+		methods = append(methods, *e)
+		scopeSet[e.Scope] = true
+	}
+	sort.Slice(methods, func(i, j int) bool {
+		if methods[i].Domain != methods[j].Domain {
+			return methods[i].Domain < methods[j].Domain
+		}
+		if methods[i].Type != methods[j].Type {
+			return methods[i].Type < methods[j].Type
+		}
+		if methods[i].Method != methods[j].Method {
+			return methods[i].Method < methods[j].Method
+		}
+		return methods[i].Scope < methods[j].Scope
+	})
+
+	scopeList := make([]string, 0, len(scopeSet))
+	for s := range scopeSet {
+		scopeList = append(scopeList, s)
+	}
+	sort.Strings(scopeList)
+
+	priorities := registry.LoadScopePriorities()
+	scopes := make([]diagScopeInfo, len(scopeList))
+	for i, s := range scopeList {
+		_, inPri := priorities[s]
+		scopes[i] = diagScopeInfo{Scope: s, Recommend: recommend[s], InPriority: inPri}
+	}
+
+	return diagOutput{Methods: methods, Scopes: scopes}
+}
+
+func diagShortcutSupportsIdentity(sc *shortcutTypes.Shortcut, identity string) bool {
+	if len(sc.AuthTypes) == 0 {
+		return identity == "user"
+	}
+	for _, a := range sc.AuthTypes {
+		if a == identity {
+			return true
+		}
+	}
+	return false
+}
+
+func appendUniq(ss []string, s string) []string {
+	for _, existing := range ss {
+		if existing == s {
+			return ss
+		}
+	}
+	return append(ss, s)
+}
+
+// ── Snapshot generation ───────────────────────────────────────────────
+//
+// Generates a JSON snapshot of all API methods and shortcuts with their
+// minimum-privilege scopes. Consumed by scripts/scope_audit.py.
+//
+// Usage:
+//
+//	SCOPE_SNAPSHOT_DIR=/tmp/scope-audit go test ./cmd/ -run TestScopeSnapshot -v
+func TestScopeSnapshot(t *testing.T) {
+	dir := os.Getenv("SCOPE_SNAPSHOT_DIR")
+	if dir == "" {
+		t.Skip("set SCOPE_SNAPSHOT_DIR to enable snapshot generation")
+	}
+
+	registry.Init()
+	result := diagBuild(diagAllKnownDomains())
+
+	if err := os.MkdirAll(dir, 0o755); err != nil {
+		t.Fatalf("mkdir: %v", err)
+	}
+	path := filepath.Join(dir, "snapshot.json")
+
+	data, err := json.MarshalIndent(result, "", "  ")
+	if err != nil {
+		t.Fatalf("marshal: %v", err)
+	}
+	if err := os.WriteFile(path, data, 0o644); err != nil {
+		t.Fatalf("write: %v", err)
+	}
+
+	t.Logf("Wrote %s (%d methods, %d scopes)", path, len(result.Methods), len(result.Scopes))
+}

cmd/doctor/doctor.go

@@ -238,7 +238,7 @@ func checkCLIUpdate() []checkResult {
 	if update.IsNewer(latest, current) {
 		return []checkResult{warn("cli_update",
 			fmt.Sprintf("%s → %s available", current, latest),
-			"run: npm update -g @larksuite/cli")}
+			"run: lark-cli update (or: npm install -g @larksuite/cli)")}
 	}
 	return []checkResult{pass("cli_update", latest+" (up to date)")}
 }

cmd/global_flags.go

@@ -3,15 +3,38 @@
 
 package cmd
 
-import "github.com/spf13/pflag"
+import (
+	"github.com/larksuite/cli/internal/core"
+	"github.com/spf13/pflag"
+)
 
 // GlobalOptions are the root-level flags shared by bootstrap parsing and the
-// actual Cobra command tree.
+// actual Cobra command tree. Profile is the parsed --profile value; HideProfile
+// is a build-time policy — when true, --profile stays parseable but is marked
+// hidden from help and shell completion.
 type GlobalOptions struct {
-	Profile string
+	Profile     string
+	HideProfile bool
 }
 
-// RegisterGlobalFlags registers the root-level persistent flags.
+// RegisterGlobalFlags registers the root-level persistent flags on fs and
+// applies any visibility policy encoded in opts. Pure function: no disk,
+// network, or environment reads — the caller decides HideProfile.
 func RegisterGlobalFlags(fs *pflag.FlagSet, opts *GlobalOptions) {
 	fs.StringVar(&opts.Profile, "profile", "", "use a specific profile")
+	if opts.HideProfile {
+		_ = fs.MarkHidden("profile")
+	}
+}
+
+// isSingleAppMode reports whether the on-disk config has at most one app.
+// Missing configs are treated as single-app since --profile is meaningless
+// until at least two profiles exist. Intended for the Execute entry point —
+// buildInternal must not call this directly to stay state-free.
+func isSingleAppMode() bool {
+	raw, err := core.LoadMultiAppConfig()
+	if err != nil || raw == nil {
+		return true
+	}
+	return len(raw.Apps) <= 1
 }

cmd/global_flags_test.go

@@ -0,0 +1,110 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/core"
+	"github.com/spf13/pflag"
+)
+
+func testStreams() BuildOption { return WithIO(os.Stdin, os.Stdout, os.Stderr) }
+
+func TestRegisterGlobalFlags_PolicyVisible(t *testing.T) {
+	fs := pflag.NewFlagSet("test", pflag.ContinueOnError)
+	opts := &GlobalOptions{}
+	RegisterGlobalFlags(fs, opts)
+
+	flag := fs.Lookup("profile")
+	if flag == nil {
+		t.Fatal("profile flag should be registered")
+	}
+	if flag.Hidden {
+		t.Fatal("profile flag should be visible when HideProfile is false")
+	}
+}
+
+func TestRegisterGlobalFlags_PolicyHidden(t *testing.T) {
+	fs := pflag.NewFlagSet("test", pflag.ContinueOnError)
+	opts := &GlobalOptions{HideProfile: true}
+	RegisterGlobalFlags(fs, opts)
+
+	flag := fs.Lookup("profile")
+	if flag == nil {
+		t.Fatal("profile flag should be registered")
+	}
+	if !flag.Hidden {
+		t.Fatal("profile flag should be hidden when HideProfile is true")
+	}
+	if err := fs.Parse([]string{"--profile", "x"}); err != nil {
+		t.Fatalf("Parse() error = %v; hidden flag should still parse", err)
+	}
+	if opts.Profile != "x" {
+		t.Fatalf("opts.Profile = %q, want %q", opts.Profile, "x")
+	}
+}
+
+func TestIsSingleAppMode_NoConfig(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	if !isSingleAppMode() {
+		t.Fatal("isSingleAppMode() = false, want true when no config exists")
+	}
+}
+
+func TestIsSingleAppMode_SingleApp(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	saveAppsForTest(t, []core.AppConfig{
+		{Name: "default", AppId: "cli_a", AppSecret: core.PlainSecret("x"), Brand: core.BrandFeishu},
+	})
+	if !isSingleAppMode() {
+		t.Fatal("isSingleAppMode() = false, want true for single-app config")
+	}
+}
+
+func TestIsSingleAppMode_MultiApp(t *testing.T) {
+	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
+	saveAppsForTest(t, []core.AppConfig{
+		{Name: "a", AppId: "cli_a", AppSecret: core.PlainSecret("x"), Brand: core.BrandFeishu},
+		{Name: "b", AppId: "cli_b", AppSecret: core.PlainSecret("y"), Brand: core.BrandFeishu},
+	})
+	if isSingleAppMode() {
+		t.Fatal("isSingleAppMode() = true, want false for multi-app config")
+	}
+}
+
+func TestBuildInternal_HideProfileOption(t *testing.T) {
+	_, root := buildInternal(context.Background(), cmdutil.InvocationContext{}, testStreams(), HideProfile(true))
+
+	flag := root.PersistentFlags().Lookup("profile")
+	if flag == nil {
+		t.Fatal("profile flag should be registered")
+	}
+	if !flag.Hidden {
+		t.Fatal("profile flag should be hidden when HideProfile(true) is applied")
+	}
+}
+
+func TestBuildInternal_DefaultShowsProfileFlag(t *testing.T) {
+	_, root := buildInternal(context.Background(), cmdutil.InvocationContext{}, testStreams())
+
+	flag := root.PersistentFlags().Lookup("profile")
+	if flag == nil {
+		t.Fatal("profile flag should be registered by default")
+	}
+	if flag.Hidden {
+		t.Fatal("profile flag should be visible by default")
+	}
+}
+
+func saveAppsForTest(t *testing.T, apps []core.AppConfig) {
+	t.Helper()
+	multi := &core.MultiAppConfig{CurrentApp: apps[0].Name, Apps: apps}
+	if err := core.SaveMultiAppConfig(multi); err != nil {
+		t.Fatalf("SaveMultiAppConfig() error = %v", err)
+	}
+}

cmd/init.go

@@ -0,0 +1,18 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmd
+
+import "github.com/larksuite/cli/internal/vfs"
+
+// SetDefaultFS replaces the global filesystem implementation used by internal
+// packages. The provided fs must implement the vfs.FS interface. If fs is nil,
+// the default OS filesystem is restored.
+//
+// Call this before Build or Execute to take effect.
+func SetDefaultFS(fs vfs.FS) {
+	if fs == nil {
+		fs = vfs.OsFs{}
+	}
+	vfs.DefaultFS = fs
+}

cmd/root.go

@@ -14,14 +14,6 @@ import (
 	"os"
 	"strconv"
 
-	"github.com/larksuite/cli/cmd/api"
-	"github.com/larksuite/cli/cmd/auth"
-	"github.com/larksuite/cli/cmd/completion"
-	cmdconfig "github.com/larksuite/cli/cmd/config"
-	"github.com/larksuite/cli/cmd/doctor"
-	"github.com/larksuite/cli/cmd/profile"
-	"github.com/larksuite/cli/cmd/schema"
-	"github.com/larksuite/cli/cmd/service"
 	internalauth "github.com/larksuite/cli/internal/auth"
 	"github.com/larksuite/cli/internal/build"
 	"github.com/larksuite/cli/internal/cmdutil"
@@ -29,7 +21,6 @@ import (
 	"github.com/larksuite/cli/internal/output"
 	"github.com/larksuite/cli/internal/registry"
 	"github.com/larksuite/cli/internal/update"
-	"github.com/larksuite/cli/shortcuts"
 	"github.com/spf13/cobra"
 )
 
@@ -94,37 +85,13 @@ func Execute() int {
 		fmt.Fprintln(os.Stderr, "Error:", err)
 		return 1
 	}
-	f := cmdutil.NewDefault(inv)
+	configureFlagCompletions(os.Args)
 
-	globals := &GlobalOptions{Profile: inv.Profile}
-	rootCmd := &cobra.Command{
-		Use:     "lark-cli",
-		Short:   "Lark/Feishu CLI — OAuth authorization, UAT management, API calls",
-		Long:    rootLong,
-		Version: build.Version,
-	}
-	installTipsHelpFunc(rootCmd)
-	rootCmd.SilenceErrors = true
-
-	RegisterGlobalFlags(rootCmd.PersistentFlags(), globals)
-	rootCmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
-		cmd.SilenceUsage = true
-	}
-
-	rootCmd.AddCommand(cmdconfig.NewCmdConfig(f))
-	rootCmd.AddCommand(auth.NewCmdAuth(f))
-	rootCmd.AddCommand(profile.NewCmdProfile(f))
-	rootCmd.AddCommand(doctor.NewCmdDoctor(f))
-	rootCmd.AddCommand(api.NewCmdApi(f, nil))
-	rootCmd.AddCommand(schema.NewCmdSchema(f, nil))
-	rootCmd.AddCommand(completion.NewCmdCompletion(f))
-	service.RegisterServiceCommands(rootCmd, f)
-	shortcuts.RegisterShortcuts(rootCmd, f)
-
-	// Prune commands incompatible with strict mode.
-	if mode := f.ResolveStrictMode(context.Background()); mode.IsActive() {
-		pruneForStrictMode(rootCmd, mode)
-	}
+	f, rootCmd := buildInternal(
+		context.Background(), inv,
+		WithIO(os.Stdin, os.Stdout, os.Stderr),
+		HideProfile(isSingleAppMode()),
+	)
 
 	// --- Update check (non-blocking) ---
 	if !isCompletionCommand(os.Args) {
@@ -188,6 +155,12 @@ func isCompletionCommand(args []string) bool {
 	return false
 }
 
+// configureFlagCompletions enables cmdutil.RegisterFlagCompletion only when
+// the invocation will actually serve a __complete request.
+func configureFlagCompletions(args []string) {
+	cmdutil.SetFlagCompletionsDisabled(!isCompletionCommand(args))
+}
+
 // handleRootError dispatches a command error to the appropriate handler
 // and returns the process exit code.
 func handleRootError(f *cmdutil.Factory, err error) int {
@@ -275,10 +248,19 @@ func writeSecurityPolicyError(w io.Writer, spErr *internalauth.SecurityPolicyErr
 }
 
 // installTipsHelpFunc wraps the default help function to append a TIPS section
-// when a command has tips set via cmdutil.SetTips.
+// when a command has tips set via cmdutil.SetTips. It also force-shows global
+// flags that are normally hidden in single-app mode (currently --profile)
+// when rendering the root command's own help, so users discovering the CLI
+// still see them at `lark-cli --help`.
 func installTipsHelpFunc(root *cobra.Command) {
 	defaultHelp := root.HelpFunc()
 	root.SetHelpFunc(func(cmd *cobra.Command, args []string) {
+		if cmd == root {
+			if f := root.PersistentFlags().Lookup("profile"); f != nil && f.Hidden {
+				f.Hidden = false
+				defer func() { f.Hidden = true }()
+			}
+		}
 		defaultHelp(cmd, args)
 		tips := cmdutil.GetTips(cmd)
 		if len(tips) == 0 {

cmd/root_integration_test.go

@@ -135,10 +135,12 @@ func newStrictModeDefaultFactory(t *testing.T, profile string, mode core.StrictM
 		t.Fatalf("SaveMultiAppConfig() error = %v", err)
 	}
 
-	f := cmdutil.NewDefault(cmdutil.InvocationContext{Profile: profile})
 	stdout := &bytes.Buffer{}
 	stderr := &bytes.Buffer{}
-	f.IOStreams = &cmdutil.IOStreams{In: nil, Out: stdout, ErrOut: stderr}
+	f := cmdutil.NewDefault(
+		cmdutil.NewIOStreams(&bytes.Buffer{}, stdout, stderr),
+		cmdutil.InvocationContext{Profile: profile},
+	)
 	return f, stdout, stderr
 }
 

cmd/root_test.go

@@ -196,3 +196,28 @@ func TestRootLong_AgentSkillsLinkTargetsReadmeSection(t *testing.T) {
 		t.Fatalf("root help should not reference the removed install-ai-agent-skills anchor, got:\n%s", rootLong)
 	}
 }
+
+func TestConfigureFlagCompletions(t *testing.T) {
+	t.Cleanup(func() { cmdutil.SetFlagCompletionsDisabled(false) })
+
+	tests := []struct {
+		name         string
+		args         []string
+		wantDisabled bool
+	}{
+		{"plain command", []string{"im", "+send"}, true},
+		{"help flag", []string{"im", "--help"}, true},
+		{"no args", []string{}, true},
+		{"__complete request", []string{"__complete", "im", "+send", ""}, false},
+		{"completion subcommand", []string{"completion", "bash"}, false},
+	}
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			cmdutil.SetFlagCompletionsDisabled(!tc.wantDisabled)
+			configureFlagCompletions(tc.args)
+			if got := cmdutil.FlagCompletionsDisabled(); got != tc.wantDisabled {
+				t.Fatalf("FlagCompletionsDisabled() = %v, want %v", got, tc.wantDisabled)
+			}
+		})
+	}
+}

cmd/schema/schema.go

@@ -4,12 +4,14 @@
 package schema
 
 import (
+	"context"
 	"fmt"
 	"io"
 	"sort"
 	"strings"
 
 	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/core"
 	"github.com/larksuite/cli/internal/output"
 	"github.com/larksuite/cli/internal/registry"
 	"github.com/larksuite/cli/internal/util"
@@ -19,6 +21,7 @@ import (
 // SchemaOptions holds all inputs for the schema command.
 type SchemaOptions struct {
 	Factory *cmdutil.Factory
+	Ctx     context.Context
 
 	// Positional args
 	Path string
@@ -41,7 +44,7 @@ func printServices(w io.Writer) {
 	fmt.Fprintf(w, "\n%sUsage: lark-cli schema <service>.<resource>.<method>%s\n", output.Dim, output.Reset)
 }
 
-func printResourceList(w io.Writer, spec map[string]interface{}) {
+func printResourceList(w io.Writer, spec map[string]interface{}, mode core.StrictMode) {
 	name := registry.GetStrFromMap(spec, "name")
 	version := registry.GetStrFromMap(spec, "version")
 	title := registry.GetStrFromMap(spec, "title")
@@ -55,9 +58,13 @@ func printResourceList(w io.Writer, spec map[string]interface{}) {
 
 	resources, _ := spec["resources"].(map[string]interface{})
 	for _, resName := range sortedKeys(resources) {
-		fmt.Fprintf(w, "  %s%s%s\n", output.Cyan, resName, output.Reset)
 		resMap, _ := resources[resName].(map[string]interface{})
 		methods, _ := resMap["methods"].(map[string]interface{})
+		methods = filterMethodsByStrictMode(methods, mode)
+		if len(methods) == 0 {
+			continue
+		}
+		fmt.Fprintf(w, "  %s%s%s\n", output.Cyan, resName, output.Reset)
 		for _, methodName := range sortedKeys(methods) {
 			m, _ := methods[methodName].(map[string]interface{})
 			httpMethod := registry.GetStrFromMap(m, "httpMethod")
@@ -73,6 +80,12 @@ func printResourceList(w io.Writer, spec map[string]interface{}) {
 	fmt.Fprintf(w, "%sUsage: lark-cli schema %s.<resource>.<method>%s\n", output.Dim, name, output.Reset)
 }
 
+// hasFileFields returns true if any requestBody field has type "file".
+func hasFileFields(method map[string]interface{}) (bool, []string) {
+	names := cmdutil.DetectFileFields(method)
+	return len(names) > 0, names
+}
+
 func printMethodDetail(w io.Writer, spec map[string]interface{}, resName, methodName string, method map[string]interface{}) {
 	servicePath := registry.GetStrFromMap(spec, "servicePath")
 	specName := registry.GetStrFromMap(spec, "name")
@@ -80,6 +93,7 @@ func printMethodDetail(w io.Writer, spec map[string]interface{}, resName, method
 	fullPath := servicePath + "/" + methodPath
 	httpMethod := registry.GetStrFromMap(method, "httpMethod")
 	desc := registry.GetStrFromMap(method, "description")
+	isFileUpload, fileFieldNames := hasFileFields(method)
 
 	fmt.Fprintf(w, "%s%s.%s.%s%s\n\n", output.Bold, specName, resName, methodName, output.Reset)
 
@@ -138,11 +152,25 @@ func printMethodDetail(w io.Writer, spec map[string]interface{}, resName, method
 		if len(params) == 0 {
 			fmt.Fprintf(w, "%sParameters:%s\n\n", output.Bold, output.Reset)
 		}
-		fmt.Fprintf(w, "  %s--data%s  <json>  %soptional%s\n", output.Cyan, output.Reset, output.Dim, output.Reset)
+		fileUploadTag := ""
+		if isFileUpload {
+			fileUploadTag = fmt.Sprintf("  %s[file upload]%s", output.Yellow, output.Reset)
+		}
+		fmt.Fprintf(w, "  %s--data%s  <json>  %soptional%s%s\n", output.Cyan, output.Reset, output.Dim, output.Reset, fileUploadTag)
 		requestBody, _ := method["requestBody"].(map[string]interface{})
 		if len(requestBody) > 0 {
 			printNestedFields(w, requestBody, "      ", "")
 		}
+
+		if isFileUpload {
+			if len(fileFieldNames) == 1 {
+				fmt.Fprintf(w, "\n  %s--file%s  <[field=]path>  %sfile upload%s\n", output.Cyan, output.Reset, output.Dim, output.Reset)
+				fmt.Fprintf(w, "      Upload file as multipart/form-data. Default field: %q\n", fileFieldNames[0])
+			} else {
+				fmt.Fprintf(w, "\n  %s--file%s  <field=path>  %sfile upload%s\n", output.Cyan, output.Reset, output.Dim, output.Reset)
+				fmt.Fprintf(w, "      Upload file as multipart/form-data. Fields: %s\n", strings.Join(fileFieldNames, ", "))
+			}
+		}
 		fmt.Fprintln(w)
 	}
 
@@ -184,7 +212,13 @@ func printMethodDetail(w io.Writer, spec map[string]interface{}, resName, method
 	}
 
 	// CLI example
-	fmt.Fprintf(w, "%sCLI:%s      lark-cli %s %s %s\n", output.Bold, output.Reset, specName, resName, methodName)
+	if isFileUpload && len(fileFieldNames) == 1 {
+		fmt.Fprintf(w, "%sCLI:%s      lark-cli %s %s %s --file <path>\n", output.Bold, output.Reset, specName, resName, methodName)
+	} else if isFileUpload {
+		fmt.Fprintf(w, "%sCLI:%s      lark-cli %s %s %s --file <field=path>\n", output.Bold, output.Reset, specName, resName, methodName)
+	} else {
+		fmt.Fprintf(w, "%sCLI:%s      lark-cli %s %s %s\n", output.Bold, output.Reset, specName, resName, methodName)
+	}
 
 	// Docs
 	if docUrl := registry.GetStrFromMap(method, "docUrl"); docUrl != "" {
@@ -332,6 +366,7 @@ func NewCmdSchema(f *cmdutil.Factory, runF func(*SchemaOptions) error) *cobra.Co
 			if len(args) > 0 {
 				opts.Path = args[0]
 			}
+			opts.Ctx = cmd.Context()
 			if runF != nil {
 				return runF(opts)
 			}
@@ -340,9 +375,9 @@ func NewCmdSchema(f *cmdutil.Factory, runF func(*SchemaOptions) error) *cobra.Co
 	}
 	cmdutil.DisableAuthCheck(cmd)
 
-	cmd.ValidArgsFunction = completeSchemaPath
+	cmd.ValidArgsFunction = completeSchemaPath(f)
 	cmd.Flags().StringVar(&opts.Format, "format", "json", "output format: json (default) | pretty")
-	_ = cmd.RegisterFlagCompletionFunc("format", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+	cmdutil.RegisterFlagCompletion(cmd, "format", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
 		return []string{"json", "pretty"}, cobra.ShellCompDirectiveNoFileComp
 	})
 
@@ -352,78 +387,86 @@ func NewCmdSchema(f *cmdutil.Factory, runF func(*SchemaOptions) error) *cobra.Co
 // completeSchemaPath provides tab-completion for the schema path argument.
 // It handles dotted resource names (e.g. app.table.fields) by iterating all
 // resources and classifying each as a prefix-match or fully-matched.
-func completeSchemaPath(_ *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
-	if len(args) > 0 {
-		return nil, cobra.ShellCompDirectiveNoFileComp
-	}
+func completeSchemaPath(f *cmdutil.Factory) func(*cobra.Command, []string, string) ([]string, cobra.ShellCompDirective) {
+	return func(cmd *cobra.Command, args []string, toComplete string) ([]string, cobra.ShellCompDirective) {
+		if len(args) > 0 {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
 
-	parts := strings.Split(toComplete, ".")
+		parts := strings.Split(toComplete, ".")
 
-	// Level 1: complete service names
-	if len(parts) <= 1 {
-		var completions []string
-		for _, s := range registry.ListFromMetaProjects() {
-			if strings.HasPrefix(s, toComplete) {
-				completions = append(completions, s+".")
+		// Level 1: complete service names
+		if len(parts) <= 1 {
+			var completions []string
+			for _, s := range registry.ListFromMetaProjects() {
+				if strings.HasPrefix(s, toComplete) {
+					completions = append(completions, s+".")
+				}
+			}
+			return completions, cobra.ShellCompDirectiveNoFileComp | cobra.ShellCompDirectiveNoSpace
+		}
+
+		serviceName := parts[0]
+		spec := registry.LoadFromMeta(serviceName)
+		if spec == nil {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+		mode := f.ResolveStrictMode(cmd.Context())
+		spec = filterSpecByStrictMode(spec, mode)
+		resources, _ := spec["resources"].(map[string]interface{})
+		if resources == nil {
+			return nil, cobra.ShellCompDirectiveNoFileComp
+		}
+
+		afterService := strings.Join(parts[1:], ".")
+		completions := completeSchemaPathForSpec(serviceName, resources, afterService)
+
+		allTrailingDot := len(completions) > 0
+		for _, c := range completions {
+			if !strings.HasSuffix(c, ".") {
+				allTrailingDot = false
+				break
 			}
 		}
-		return completions, cobra.ShellCompDirectiveNoFileComp | cobra.ShellCompDirectiveNoSpace
+		directive := cobra.ShellCompDirectiveNoFileComp
+		if allTrailingDot {
+			directive |= cobra.ShellCompDirectiveNoSpace
+		}
+		return completions, directive
 	}
+}
 
-	serviceName := parts[0]
-	spec := registry.LoadFromMeta(serviceName)
-	if spec == nil {
-		return nil, cobra.ShellCompDirectiveNoFileComp
-	}
-	resources, _ := spec["resources"].(map[string]interface{})
-	if resources == nil {
-		return nil, cobra.ShellCompDirectiveNoFileComp
-	}
-
-	// afterService = everything user typed after "serviceName."
-	afterService := strings.Join(parts[1:], ".")
-
+func completeSchemaPathForSpec(serviceName string, resources map[string]interface{}, afterService string) []string {
 	var completions []string
 
 	for resName, resVal := range resources {
 		if strings.HasPrefix(resName, afterService) {
-			// afterService is a prefix of this resource name → resource candidate
 			completions = append(completions, serviceName+"."+resName+".")
-		} else if strings.HasPrefix(afterService, resName+".") {
-			// This resource is fully matched; remainder is method prefix
-			methodPrefix := afterService[len(resName)+1:]
-			resMap, _ := resVal.(map[string]interface{})
-			if resMap == nil {
-				continue
-			}
-			methods, _ := resMap["methods"].(map[string]interface{})
-			for methodName := range methods {
-				if strings.HasPrefix(methodName, methodPrefix) {
-					completions = append(completions, serviceName+"."+resName+"."+methodName)
-				}
+			continue
+		}
+		if !strings.HasPrefix(afterService, resName+".") {
+			continue
+		}
+		methodPrefix := afterService[len(resName)+1:]
+		resMap, _ := resVal.(map[string]interface{})
+		if resMap == nil {
+			continue
+		}
+		methods, _ := resMap["methods"].(map[string]interface{})
+		for methodName := range methods {
+			if strings.HasPrefix(methodName, methodPrefix) {
+				completions = append(completions, serviceName+"."+resName+"."+methodName)
 			}
 		}
 	}
 
 	sort.Strings(completions)
-
-	// If all completions end with ".", user is still navigating resources → NoSpace
-	allTrailingDot := len(completions) > 0
-	for _, c := range completions {
-		if !strings.HasSuffix(c, ".") {
-			allTrailingDot = false
-			break
-		}
-	}
-	directive := cobra.ShellCompDirectiveNoFileComp
-	if allTrailingDot {
-		directive |= cobra.ShellCompDirectiveNoSpace
-	}
-	return completions, directive
+	return completions
 }
 
 func schemaRun(opts *SchemaOptions) error {
 	out := opts.Factory.IOStreams.Out
+	mode := opts.Factory.ResolveStrictMode(opts.Ctx)
 
 	if opts.Path == "" {
 		printServices(out)
@@ -442,9 +485,9 @@ func schemaRun(opts *SchemaOptions) error {
 
 	if len(parts) == 1 {
 		if opts.Format == "pretty" {
-			printResourceList(out, spec)
+			printResourceList(out, spec, mode)
 		} else {
-			output.PrintJson(out, spec)
+			output.PrintJson(out, filterSpecByStrictMode(spec, mode))
 		}
 		return nil
 	}
@@ -465,6 +508,7 @@ func schemaRun(opts *SchemaOptions) error {
 		if opts.Format == "pretty" {
 			fmt.Fprintf(out, "%s%s.%s%s\n\n", output.Bold, serviceName, resName, output.Reset)
 			methods, _ := resource["methods"].(map[string]interface{})
+			methods = filterMethodsByStrictMode(methods, mode)
 			for _, mName := range sortedKeys(methods) {
 				m, _ := methods[mName].(map[string]interface{})
 				httpMethod := registry.GetStrFromMap(m, "httpMethod")
@@ -473,13 +517,26 @@ func schemaRun(opts *SchemaOptions) error {
 			}
 			fmt.Fprintf(out, "\n%sUsage: lark-cli schema %s.%s.<method>%s\n", output.Dim, serviceName, resName, output.Reset)
 		} else {
-			output.PrintJson(out, resource)
+			// For JSON output, filter methods in a copy to avoid mutating the registry.
+			if mode.IsActive() {
+				filtered := make(map[string]interface{})
+				for k, v := range resource {
+					filtered[k] = v
+				}
+				if methods, ok := resource["methods"].(map[string]interface{}); ok {
+					filtered["methods"] = filterMethodsByStrictMode(methods, mode)
+				}
+				output.PrintJson(out, filtered)
+			} else {
+				output.PrintJson(out, resource)
+			}
 		}
 		return nil
 	}
 
 	methodName := remaining[0]
 	methods, _ := resource["methods"].(map[string]interface{})
+	methods = filterMethodsByStrictMode(methods, mode)
 	method, ok := methods[methodName].(map[string]interface{})
 	if !ok {
 		var mNames []string
@@ -498,3 +555,67 @@ func schemaRun(opts *SchemaOptions) error {
 	}
 	return nil
 }
+
+// filterSpecByStrictMode returns a shallow copy of spec with each resource's methods
+// filtered by strict mode. Returns the original spec when strict mode is off.
+func filterSpecByStrictMode(spec map[string]interface{}, mode core.StrictMode) map[string]interface{} {
+	if !mode.IsActive() {
+		return spec
+	}
+	result := make(map[string]interface{}, len(spec))
+	for k, v := range spec {
+		result[k] = v
+	}
+	resources, _ := spec["resources"].(map[string]interface{})
+	if resources == nil {
+		return result
+	}
+	filteredRes := make(map[string]interface{}, len(resources))
+	for resName, resVal := range resources {
+		resMap, ok := resVal.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		methods, _ := resMap["methods"].(map[string]interface{})
+		filtered := filterMethodsByStrictMode(methods, mode)
+		if len(filtered) == 0 {
+			continue
+		}
+		resCopy := make(map[string]interface{}, len(resMap))
+		for k, v := range resMap {
+			resCopy[k] = v
+		}
+		resCopy["methods"] = filtered
+		filteredRes[resName] = resCopy
+	}
+	result["resources"] = filteredRes
+	return result
+}
+
+// filterMethodsByStrictMode removes methods incompatible with the active strict mode.
+// Returns the original map unmodified when strict mode is off.
+func filterMethodsByStrictMode(methods map[string]interface{}, mode core.StrictMode) map[string]interface{} {
+	if !mode.IsActive() || methods == nil {
+		return methods
+	}
+	token := registry.IdentityToAccessToken(string(mode.ForcedIdentity()))
+	filtered := make(map[string]interface{}, len(methods))
+	for name, val := range methods {
+		m, ok := val.(map[string]interface{})
+		if !ok {
+			continue
+		}
+		tokens, _ := m["accessTokens"].([]interface{})
+		if tokens == nil {
+			filtered[name] = val
+			continue
+		}
+		for _, t := range tokens {
+			if ts, ok := t.(string); ok && ts == token {
+				filtered[name] = val
+				break
+			}
+		}
+	}
+	return filtered
+}

cmd/schema/schema_test.go

@@ -4,6 +4,7 @@
 package schema
 
 import (
+	"bytes"
 	"strings"
 	"testing"
 
@@ -61,3 +62,169 @@ func TestSchemaCmd_UnknownService(t *testing.T) {
 		t.Errorf("expected 'Unknown service' error, got: %v", err)
 	}
 }
+
+func TestPrintMethodDetail_FileUpload(t *testing.T) {
+	spec := map[string]interface{}{
+		"name":        "im",
+		"servicePath": "/open-apis/im/v1",
+	}
+	method := map[string]interface{}{
+		"path":        "images",
+		"httpMethod":  "POST",
+		"description": "Upload an image",
+		"requestBody": map[string]interface{}{
+			"image_type": map[string]interface{}{
+				"type":     "string",
+				"required": true,
+			},
+			"image": map[string]interface{}{
+				"type":     "file",
+				"required": true,
+			},
+		},
+		"accessTokens": []interface{}{"user", "tenant"},
+	}
+
+	var buf bytes.Buffer
+	printMethodDetail(&buf, spec, "images", "create", method)
+	out := buf.String()
+
+	if !strings.Contains(out, "file upload") {
+		t.Errorf("expected 'file upload' marker in output, got:\n%s", out)
+	}
+	if !strings.Contains(out, "--file") {
+		t.Errorf("expected '--file' in output, got:\n%s", out)
+	}
+	if !strings.Contains(out, `"image"`) {
+		t.Errorf("expected default field name 'image' in output, got:\n%s", out)
+	}
+	if !strings.Contains(out, "--file <path>") {
+		t.Errorf("expected CLI example with --file <path>, got:\n%s", out)
+	}
+}
+
+func TestPrintMethodDetail_NoFileUpload(t *testing.T) {
+	spec := map[string]interface{}{
+		"name":        "calendar",
+		"servicePath": "/open-apis/calendar/v4",
+	}
+	method := map[string]interface{}{
+		"path":        "events",
+		"httpMethod":  "POST",
+		"description": "Create an event",
+		"requestBody": map[string]interface{}{
+			"summary": map[string]interface{}{
+				"type":     "string",
+				"required": true,
+			},
+		},
+	}
+
+	var buf bytes.Buffer
+	printMethodDetail(&buf, spec, "events", "create", method)
+	out := buf.String()
+
+	if strings.Contains(out, "file upload") {
+		t.Errorf("did not expect 'file upload' marker for non-file method, got:\n%s", out)
+	}
+	if strings.Contains(out, "--file") {
+		t.Errorf("did not expect '--file' for non-file method, got:\n%s", out)
+	}
+}
+
+func TestHasFileFields(t *testing.T) {
+	tests := []struct {
+		name       string
+		method     map[string]interface{}
+		wantBool   bool
+		wantFields []string
+	}{
+		{
+			name: "has file field",
+			method: map[string]interface{}{
+				"requestBody": map[string]interface{}{
+					"image": map[string]interface{}{"type": "file"},
+					"name":  map[string]interface{}{"type": "string"},
+				},
+			},
+			wantBool:   true,
+			wantFields: []string{"image"},
+		},
+		{
+			name: "no file field",
+			method: map[string]interface{}{
+				"requestBody": map[string]interface{}{
+					"name": map[string]interface{}{"type": "string"},
+				},
+			},
+			wantBool:   false,
+			wantFields: nil,
+		},
+		{
+			name:       "no requestBody",
+			method:     map[string]interface{}{},
+			wantBool:   false,
+			wantFields: nil,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, names := hasFileFields(tt.method)
+			if got != tt.wantBool {
+				t.Errorf("hasFileFields() = %v, want %v", got, tt.wantBool)
+			}
+			if tt.wantFields == nil && names != nil {
+				t.Errorf("expected nil names, got %v", names)
+			}
+			if tt.wantFields != nil && len(names) != len(tt.wantFields) {
+				t.Errorf("expected %d field names, got %d", len(tt.wantFields), len(names))
+			}
+		})
+	}
+}
+
+func TestCompleteSchemaPathForSpec(t *testing.T) {
+	resources := map[string]interface{}{
+		"records": map[string]interface{}{
+			"methods": map[string]interface{}{
+				"create": map[string]interface{}{},
+				"list":   map[string]interface{}{},
+			},
+		},
+		"record_permissions": map[string]interface{}{
+			"methods": map[string]interface{}{
+				"get": map[string]interface{}{},
+			},
+		},
+	}
+
+	got := completeSchemaPathForSpec("base", resources, "records.cr")
+	if len(got) != 1 || got[0] != "base.records.create" {
+		t.Fatalf("completions = %v, want [base.records.create]", got)
+	}
+
+	got = completeSchemaPathForSpec("base", resources, "record")
+	if len(got) != 2 || got[0] != "base.record_permissions." || got[1] != "base.records." {
+		t.Fatalf("resource completions = %v", got)
+	}
+}
+
+func TestFilterSpecByStrictMode_RemovesIncompatibleMethodsFromCompletionSource(t *testing.T) {
+	spec := map[string]interface{}{
+		"resources": map[string]interface{}{
+			"records": map[string]interface{}{
+				"methods": map[string]interface{}{
+					"list":   map[string]interface{}{"accessTokens": []interface{}{"tenant"}},
+					"create": map[string]interface{}{"accessTokens": []interface{}{"user"}},
+				},
+			},
+		},
+	}
+
+	filtered := filterSpecByStrictMode(spec, core.StrictModeBot)
+	resources, _ := filtered["resources"].(map[string]interface{})
+	got := completeSchemaPathForSpec("base", resources, "records.")
+	if len(got) != 1 || got[0] != "base.records.list" {
+		t.Fatalf("filtered completions = %v, want [base.records.list]", got)
+	}
+}

cmd/service/service.go

@@ -24,6 +24,10 @@ import (
 
 // RegisterServiceCommands registers all service commands from from_meta specs.
 func RegisterServiceCommands(parent *cobra.Command, f *cmdutil.Factory) {
+	RegisterServiceCommandsWithContext(context.Background(), parent, f)
+}
+
+func RegisterServiceCommandsWithContext(ctx context.Context, parent *cobra.Command, f *cmdutil.Factory) {
 	for _, project := range registry.ListFromMetaProjects() {
 		spec := registry.LoadFromMeta(project)
 		if spec == nil {
@@ -38,11 +42,15 @@ func RegisterServiceCommands(parent *cobra.Command, f *cmdutil.Factory) {
 		if resources == nil {
 			continue
 		}
-		registerService(parent, spec, resources, f)
+		registerServiceWithContext(ctx, parent, spec, resources, f)
 	}
 }
 
 func registerService(parent *cobra.Command, spec map[string]interface{}, resources map[string]interface{}, f *cmdutil.Factory) {
+	registerServiceWithContext(context.Background(), parent, spec, resources, f)
+}
+
+func registerServiceWithContext(ctx context.Context, parent *cobra.Command, spec map[string]interface{}, resources map[string]interface{}, f *cmdutil.Factory) {
 	specName := registry.GetStrFromMap(spec, "name")
 	specDesc := registry.GetServiceDescription(specName, "en")
 	if specDesc == "" {
@@ -70,11 +78,11 @@ func registerService(parent *cobra.Command, spec map[string]interface{}, resourc
 		if resMap == nil {
 			continue
 		}
-		registerResource(svc, spec, resName, resMap, f)
+		registerResourceWithContext(ctx, svc, spec, resName, resMap, f)
 	}
 }
 
-func registerResource(parent *cobra.Command, spec map[string]interface{}, name string, resource map[string]interface{}, f *cmdutil.Factory) {
+func registerResourceWithContext(ctx context.Context, parent *cobra.Command, spec map[string]interface{}, name string, resource map[string]interface{}, f *cmdutil.Factory) {
 	res := &cobra.Command{
 		Use:   name,
 		Short: name + " operations",
@@ -87,7 +95,7 @@ func registerResource(parent *cobra.Command, spec map[string]interface{}, name s
 		if methodMap == nil {
 			continue
 		}
-		registerMethod(res, spec, methodMap, methodName, name, f)
+		registerMethodWithContext(ctx, res, spec, methodMap, methodName, name, f)
 	}
 }
 
@@ -101,24 +109,35 @@ type ServiceMethodOptions struct {
 	SchemaPath string
 
 	// Flags
-	Params    string
-	Data      string
-	As        core.Identity
-	Output    string
-	PageAll   bool
-	PageLimit int
-	PageDelay int
-	Format    string
-	JqExpr    string
-	DryRun    bool
+	Params     string
+	Data       string
+	As         core.Identity
+	Output     string
+	PageAll    bool
+	PageLimit  int
+	PageDelay  int
+	Format     string
+	JqExpr     string
+	DryRun     bool
+	File       string   // --file flag value
+	FileFields []string // auto-detected file field names from metadata
 }
 
-func registerMethod(parent *cobra.Command, spec map[string]interface{}, method map[string]interface{}, name string, resName string, f *cmdutil.Factory) {
-	parent.AddCommand(NewCmdServiceMethod(f, spec, method, name, resName, nil))
+// detectFileFields delegates to the shared cmdutil.DetectFileFields helper.
+func detectFileFields(method map[string]interface{}) []string {
+	return cmdutil.DetectFileFields(method)
+}
+
+func registerMethodWithContext(ctx context.Context, parent *cobra.Command, spec map[string]interface{}, method map[string]interface{}, name string, resName string, f *cmdutil.Factory) {
+	parent.AddCommand(NewCmdServiceMethodWithContext(ctx, f, spec, method, name, resName, nil))
 }
 
 // NewCmdServiceMethod creates a command for a dynamically registered service method.
 func NewCmdServiceMethod(f *cmdutil.Factory, spec, method map[string]interface{}, name, resName string, runF func(*ServiceMethodOptions) error) *cobra.Command {
+	return NewCmdServiceMethodWithContext(context.Background(), f, spec, method, name, resName, runF)
+}
+
+func NewCmdServiceMethodWithContext(ctx context.Context, f *cmdutil.Factory, spec, method map[string]interface{}, name, resName string, runF func(*ServiceMethodOptions) error) *cobra.Command {
 	desc := registry.GetStrFromMap(method, "description")
 	httpMethod := registry.GetStrFromMap(method, "httpMethod")
 	specName := registry.GetStrFromMap(spec, "name")
@@ -152,7 +171,7 @@ func NewCmdServiceMethod(f *cmdutil.Factory, spec, method map[string]interface{}
 	case "POST", "PUT", "PATCH", "DELETE":
 		cmd.Flags().StringVar(&opts.Data, "data", "", "request body JSON (supports - for stdin)")
 	}
-	cmd.Flags().StringVar(&asStr, "as", "auto", "identity type: user | bot | auto (default)")
+	cmdutil.AddAPIIdentityFlag(ctx, cmd, f, &asStr)
 	cmd.Flags().StringVarP(&opts.Output, "output", "o", "", "output file path for binary responses")
 	cmd.Flags().BoolVar(&opts.PageAll, "page-all", false, "automatically paginate through all pages")
 	cmd.Flags().IntVar(&opts.PageLimit, "page-limit", 10, "max pages to fetch with --page-all (0 = unlimited)")
@@ -161,10 +180,16 @@ func NewCmdServiceMethod(f *cmdutil.Factory, spec, method map[string]interface{}
 	cmd.Flags().StringVarP(&opts.JqExpr, "jq", "q", "", "jq expression to filter JSON output")
 	cmd.Flags().BoolVar(&opts.DryRun, "dry-run", false, "print request without executing")
 
-	_ = cmd.RegisterFlagCompletionFunc("as", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
-		return []string{"user", "bot"}, cobra.ShellCompDirectiveNoFileComp
-	})
-	_ = cmd.RegisterFlagCompletionFunc("format", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+	// Conditionally register --file for methods with file-type fields.
+	fileFields := detectFileFields(method)
+	opts.FileFields = fileFields
+	if len(fileFields) > 0 {
+		switch httpMethod {
+		case "POST", "PUT", "PATCH", "DELETE":
+			cmd.Flags().StringVar(&opts.File, "file", "", "file to upload ([field=]path, supports - for stdin)")
+		}
+	}
+	cmdutil.RegisterFlagCompletion(cmd, "format", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
 		return []string{"json", "ndjson", "table", "csv"}, cobra.ShellCompDirectiveNoFileComp
 	})
 
@@ -212,12 +237,15 @@ func serviceMethodRun(opts *ServiceMethodOptions) error {
 		}
 	}
 
-	request, err := buildServiceRequest(opts)
+	request, fileMeta, err := buildServiceRequest(opts)
 	if err != nil {
 		return err
 	}
 
 	if opts.DryRun {
+		if fileMeta != nil {
+			return cmdutil.PrintDryRunWithFile(f.IOStreams.Out, request, config, opts.Format, fileMeta.FieldName, fileMeta.FilePath, fileMeta.FormFields)
+		}
 		return serviceDryRun(f, request, config, opts.Format)
 	}
 
@@ -303,7 +331,9 @@ func checkServiceScopes(ctx context.Context, cred *credential.CredentialProvider
 }
 
 // buildServiceRequest parses flags, builds the URL with path/query params, and returns a RawApiRequest.
-func buildServiceRequest(opts *ServiceMethodOptions) (client.RawApiRequest, error) {
+// When dryRun is true and a file is provided, file reading is skipped and
+// FileUploadMeta is returned instead so the caller can render dry-run output.
+func buildServiceRequest(opts *ServiceMethodOptions) (client.RawApiRequest, *cmdutil.FileUploadMeta, error) {
 	spec := opts.Spec
 	method := opts.Method
 	schemaPath := opts.SchemaPath
@@ -312,12 +342,17 @@ func buildServiceRequest(opts *ServiceMethodOptions) (client.RawApiRequest, erro
 	// stdin is an io.Reader consumed at most once. Only one of --params/--data
 	// may use "-" (stdin); the conflict check below prevents silent data loss.
 	stdin := opts.Factory.IOStreams.In
+
+	// Validate --file mutual exclusions.
+	if err := cmdutil.ValidateFileFlag(opts.File, opts.Params, opts.Data, opts.Output, opts.PageAll, httpMethod); err != nil {
+		return client.RawApiRequest{}, nil, err
+	}
 	if opts.Params == "-" && opts.Data == "-" {
-		return client.RawApiRequest{}, output.ErrValidation("--params and --data cannot both read from stdin (-)")
+		return client.RawApiRequest{}, nil, output.ErrValidation("--params and --data cannot both read from stdin (-)")
 	}
 	params, err := cmdutil.ParseJSONMap(opts.Params, "--params", stdin)
 	if err != nil {
-		return client.RawApiRequest{}, err
+		return client.RawApiRequest{}, nil, err
 	}
 
 	url := registry.GetStrFromMap(spec, "servicePath") + "/" + registry.GetStrFromMap(method, "path")
@@ -330,13 +365,13 @@ func buildServiceRequest(opts *ServiceMethodOptions) (client.RawApiRequest, erro
 		}
 		val, ok := params[name]
 		if !ok || util.IsEmptyValue(val) {
-			return client.RawApiRequest{}, output.ErrWithHint(output.ExitValidation, "validation",
+			return client.RawApiRequest{}, nil, output.ErrWithHint(output.ExitValidation, "validation",
 				fmt.Sprintf("missing required path parameter: %s", name),
 				fmt.Sprintf("lark-cli schema %s", schemaPath))
 		}
 		valStr := fmt.Sprintf("%v", val)
 		if err := validate.ResourceName(valStr, name); err != nil {
-			return client.RawApiRequest{}, output.ErrValidation("%s", err)
+			return client.RawApiRequest{}, nil, output.ErrValidation("%s", err)
 		}
 		url = strings.Replace(url, "{"+name+"}", validate.EncodePathSegment(valStr), 1)
 		delete(params, name)
@@ -352,7 +387,7 @@ func buildServiceRequest(opts *ServiceMethodOptions) (client.RawApiRequest, erro
 		required, _ := p["required"].(bool)
 		isPaginationParam := opts.PageAll && (name == "page_token" || name == "page_size")
 		if required && !isPaginationParam && (!exists || util.IsEmptyValue(value)) {
-			return client.RawApiRequest{}, output.ErrWithHint(output.ExitValidation, "validation",
+			return client.RawApiRequest{}, nil, output.ErrWithHint(output.ExitValidation, "validation",
 				fmt.Sprintf("missing required query parameter: %s", name),
 				fmt.Sprintf("lark-cli schema %s", schemaPath))
 		}
@@ -366,22 +401,60 @@ func buildServiceRequest(opts *ServiceMethodOptions) (client.RawApiRequest, erro
 		}
 	}
 
-	data, err := cmdutil.ParseOptionalBody(httpMethod, opts.Data, stdin)
-	if err != nil {
-		return client.RawApiRequest{}, err
-	}
-
 	request := client.RawApiRequest{
 		Method: httpMethod,
 		URL:    url,
 		Params: queryParams,
-		Data:   data,
 		As:     opts.As,
 	}
-	if opts.Output != "" {
-		request.ExtraOpts = append(request.ExtraOpts, larkcore.WithFileDownload())
+
+	if opts.File != "" {
+		// File upload: determine default field name from metadata.
+		defaultField := "file"
+		if len(opts.FileFields) == 1 {
+			defaultField = opts.FileFields[0]
+		}
+		fieldName, filePath, isStdin := cmdutil.ParseFileFlag(opts.File, defaultField)
+
+		// Parse --data as form fields.
+		var dataFields any
+		if opts.Data != "" {
+			dataFields, err = cmdutil.ParseOptionalBody(httpMethod, opts.Data, stdin)
+			if err != nil {
+				return client.RawApiRequest{}, nil, err
+			}
+			if _, ok := dataFields.(map[string]any); !ok {
+				return client.RawApiRequest{}, nil, output.ErrValidation("--data must be a JSON object when used with --file")
+			}
+		}
+
+		if opts.DryRun {
+			return request, &cmdutil.FileUploadMeta{
+				FieldName: fieldName, FilePath: filePath, FormFields: dataFields,
+			}, nil
+		}
+
+		fd, err := cmdutil.BuildFormdata(
+			opts.Factory.ResolveFileIO(opts.Ctx),
+			fieldName, filePath, isStdin, stdin, dataFields,
+		)
+		if err != nil {
+			return client.RawApiRequest{}, nil, err
+		}
+		request.Data = fd
+		request.ExtraOpts = append(request.ExtraOpts, larkcore.WithFileUpload())
+	} else {
+		data, err := cmdutil.ParseOptionalBody(httpMethod, opts.Data, stdin)
+		if err != nil {
+			return client.RawApiRequest{}, nil, err
+		}
+		request.Data = data
+		if opts.Output != "" {
+			request.ExtraOpts = append(request.ExtraOpts, larkcore.WithFileDownload())
+		}
 	}
-	return request, nil
+
+	return request, nil, nil
 }
 
 func serviceDryRun(f *cmdutil.Factory, request client.RawApiRequest, config *core.CliConfig, format string) error {

cmd/service/service_test.go

@@ -4,6 +4,7 @@
 package service
 
 import (
+	"os"
 	"strings"
 	"testing"
 
@@ -120,6 +121,24 @@ func TestRegisterService_MergesExistingCommand(t *testing.T) {
 	}
 }
 
+func TestNewCmdServiceMethod_StrictModeHidesAsFlag(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, &core.CliConfig{
+		AppID: "test-app", AppSecret: "test-secret", Brand: core.BrandFeishu, SupportedIdentities: 2,
+	})
+
+	cmd := NewCmdServiceMethod(f, driveSpec(), driveMethod("GET", nil), "copy", "files", nil)
+	flag := cmd.Flags().Lookup("as")
+	if flag == nil {
+		t.Fatal("expected --as flag to be registered")
+	}
+	if !flag.Hidden {
+		t.Fatal("expected --as flag to be hidden in strict mode")
+	}
+	if got := flag.DefValue; got != "bot" {
+		t.Fatalf("default value = %q, want %q", got, "bot")
+	}
+}
+
 // ── NewCmdServiceMethod flags ──
 
 func TestNewCmdServiceMethod_GETHasNoDataFlag(t *testing.T) {
@@ -710,6 +729,144 @@ func TestScopeAwareChecker_ScopeError_BotMode(t *testing.T) {
 	}
 }
 
+// ── file upload ──
+
+func imImageMethod() map[string]interface{} {
+	return map[string]interface{}{
+		"path":       "images",
+		"httpMethod": "POST",
+		"requestBody": map[string]interface{}{
+			"image_type": map[string]interface{}{
+				"type":     "string",
+				"required": true,
+			},
+			"image": map[string]interface{}{
+				"type":     "file",
+				"required": true,
+			},
+		},
+		"accessTokens": []interface{}{"user", "tenant"},
+	}
+}
+
+func imSpec() map[string]interface{} {
+	return map[string]interface{}{
+		"name":        "im",
+		"servicePath": "/open-apis/im/v1",
+	}
+}
+
+func TestServiceMethod_FileFlagRegistered(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, testConfig)
+	cmd := NewCmdServiceMethod(f, imSpec(), imImageMethod(), "create", "images", nil)
+	flag := cmd.Flags().Lookup("file")
+	if flag == nil {
+		t.Fatal("expected --file flag to be registered for file upload method")
+	}
+}
+
+func TestServiceMethod_FileFlagNotRegistered(t *testing.T) {
+	f, _, _, _ := cmdutil.TestFactory(t, testConfig)
+	cmd := NewCmdServiceMethod(f, driveSpec(), driveMethod("POST", nil), "copy", "files", nil)
+	flag := cmd.Flags().Lookup("file")
+	if flag != nil {
+		t.Fatal("expected --file flag NOT to be registered for non-file method")
+	}
+}
+
+func TestServiceMethod_FileFlagNotRegisteredForGET(t *testing.T) {
+	getMethod := map[string]interface{}{
+		"path":       "images",
+		"httpMethod": "GET",
+		"requestBody": map[string]interface{}{
+			"image": map[string]interface{}{
+				"type": "file",
+			},
+		},
+	}
+	f, _, _, _ := cmdutil.TestFactory(t, testConfig)
+	cmd := NewCmdServiceMethod(f, imSpec(), getMethod, "get", "images", nil)
+	flag := cmd.Flags().Lookup("file")
+	if flag != nil {
+		t.Fatal("expected --file flag NOT to be registered for GET method")
+	}
+}
+
+func TestServiceMethod_FileUpload_DryRun(t *testing.T) {
+	tmpDir := t.TempDir()
+	tmpFile := tmpDir + "/test.jpg"
+	if err := os.WriteFile(tmpFile, []byte("fake-image"), 0600); err != nil {
+		t.Fatal(err)
+	}
+
+	f, stdout, _, _ := cmdutil.TestFactory(t, testConfig)
+	cmd := NewCmdServiceMethod(f, imSpec(), imImageMethod(), "create", "images", nil)
+	cmd.SetArgs([]string{
+		"--file", "image=" + tmpFile,
+		"--data", `{"image_type":"message"}`,
+		"--dry-run",
+		"--as", "bot",
+	})
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, "image") {
+		t.Errorf("expected dry-run output to mention file field, got: %s", out)
+	}
+	if !strings.Contains(out, "Dry Run") {
+		t.Errorf("expected dry-run header, got: %s", out)
+	}
+}
+
+func TestDetectFileFields(t *testing.T) {
+	tests := []struct {
+		name   string
+		method map[string]interface{}
+		want   []string
+	}{
+		{
+			name: "single file field",
+			method: map[string]interface{}{
+				"requestBody": map[string]interface{}{
+					"image": map[string]interface{}{"type": "file"},
+					"name":  map[string]interface{}{"type": "string"},
+				},
+			},
+			want: []string{"image"},
+		},
+		{
+			name: "no file fields",
+			method: map[string]interface{}{
+				"requestBody": map[string]interface{}{
+					"name": map[string]interface{}{"type": "string"},
+				},
+			},
+			want: nil,
+		},
+		{
+			name:   "no requestBody",
+			method: map[string]interface{}{},
+			want:   nil,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := detectFileFields(tt.method)
+			if len(got) != len(tt.want) {
+				t.Errorf("detectFileFields() = %v, want %v", got, tt.want)
+				return
+			}
+			for i := range got {
+				if got[i] != tt.want[i] {
+					t.Errorf("detectFileFields()[%d] = %q, want %q", i, got[i], tt.want[i])
+				}
+			}
+		})
+	}
+}
+
 // ── helpers ──
 
 func isExitError(err error, target **output.ExitError) bool {

cmd/update/update.go

@@ -0,0 +1,314 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdupdate
+
+import (
+	"fmt"
+	"runtime"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	"github.com/larksuite/cli/internal/build"
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/output"
+	"github.com/larksuite/cli/internal/selfupdate"
+	"github.com/larksuite/cli/internal/update"
+)
+
+const (
+	repoURL      = "https://github.com/larksuite/cli"
+	maxNpmOutput = 2000
+	osWindows    = "windows"
+)
+
+// Overridable for testing.
+var (
+	fetchLatest    = func() (string, error) { return update.FetchLatest() }
+	currentVersion = func() string { return build.Version }
+	currentOS      = runtime.GOOS
+	newUpdater     = func() *selfupdate.Updater { return selfupdate.New() }
+)
+
+func isWindows() bool { return currentOS == osWindows }
+
+func releaseURL(version string) string {
+	return repoURL + "/releases/tag/v" + strings.TrimPrefix(version, "v")
+}
+
+func changelogURL() string { return repoURL + "/blob/main/CHANGELOG.md" }
+
+// --- Terminal symbols (ASCII fallback on Windows) ---
+
+func symOK() string {
+	if isWindows() {
+		return "[OK]"
+	}
+	return "✓"
+}
+
+func symFail() string {
+	if isWindows() {
+		return "[FAIL]"
+	}
+	return "✗"
+}
+
+func symWarn() string {
+	if isWindows() {
+		return "[WARN]"
+	}
+	return "⚠"
+}
+
+func symArrow() string {
+	if isWindows() {
+		return "->"
+	}
+	return "→"
+}
+
+// --- Command ---
+
+// UpdateOptions holds inputs for the update command.
+type UpdateOptions struct {
+	Factory *cmdutil.Factory
+	JSON    bool
+	Force   bool
+	Check   bool
+}
+
+// NewCmdUpdate creates the update command.
+func NewCmdUpdate(f *cmdutil.Factory) *cobra.Command {
+	opts := &UpdateOptions{Factory: f}
+
+	cmd := &cobra.Command{
+		Use:   "update",
+		Short: "Update lark-cli to the latest version",
+		Long: `Update lark-cli to the latest version.
+
+Detects the installation method automatically:
+  - npm install: runs npm install -g @larksuite/cli@<version>
+  - manual/other: shows GitHub Releases download URL
+
+Use --json for structured output (for AI agents and scripts).
+Use --check to only check for updates without installing.`,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return updateRun(opts)
+		},
+	}
+	cmdutil.DisableAuthCheck(cmd)
+	cmd.Flags().BoolVar(&opts.JSON, "json", false, "structured JSON output")
+	cmd.Flags().BoolVar(&opts.Force, "force", false, "force reinstall even if already up to date")
+	cmd.Flags().BoolVar(&opts.Check, "check", false, "only check for updates, do not install")
+
+	return cmd
+}
+
+func updateRun(opts *UpdateOptions) error {
+	io := opts.Factory.IOStreams
+	cur := currentVersion()
+	updater := newUpdater()
+
+	updater.CleanupStaleFiles()
+	output.PendingNotice = nil
+
+	// 1. Fetch latest version
+	latest, err := fetchLatest()
+	if err != nil {
+		return reportError(opts, io, output.ExitNetwork, "network", "failed to check latest version: %s", err)
+	}
+
+	// 2. Validate version format
+	if update.ParseVersion(latest) == nil {
+		return reportError(opts, io, output.ExitInternal, "update_error", "invalid version from registry: %s", latest)
+	}
+
+	// 3. Compare versions
+	if !opts.Force && !update.IsNewer(latest, cur) {
+		if opts.JSON {
+			output.PrintJson(io.Out, map[string]interface{}{
+				"ok": true, "previous_version": cur, "current_version": cur,
+				"latest_version": latest, "action": "already_up_to_date",
+				"message": fmt.Sprintf("lark-cli %s is already up to date", cur),
+			})
+			return nil
+		}
+		fmt.Fprintf(io.ErrOut, "%s lark-cli %s is already up to date\n", symOK(), cur)
+		return nil
+	}
+
+	// 4. Detect installation method
+	detect := updater.DetectInstallMethod()
+
+	// 5. --check
+	if opts.Check {
+		return reportCheckResult(opts, io, cur, latest, detect.CanAutoUpdate())
+	}
+
+	// 6. Execute update
+	if !detect.CanAutoUpdate() {
+		return doManualUpdate(opts, io, cur, latest, detect)
+	}
+	return doNpmUpdate(opts, io, cur, latest, updater)
+}
+
+// --- Output helpers ---
+
+func reportError(opts *UpdateOptions, io *cmdutil.IOStreams, exitCode int, errType, format string, args ...interface{}) error {
+	msg := fmt.Sprintf(format, args...)
+	if opts.JSON {
+		output.PrintJson(io.Out, map[string]interface{}{
+			"ok": false, "error": map[string]interface{}{"type": errType, "message": msg},
+		})
+		return output.ErrBare(exitCode)
+	}
+	return output.Errorf(exitCode, errType, "%s", msg)
+}
+
+func reportCheckResult(opts *UpdateOptions, io *cmdutil.IOStreams, cur, latest string, canAutoUpdate bool) error {
+	if opts.JSON {
+		output.PrintJson(io.Out, map[string]interface{}{
+			"ok": true, "previous_version": cur, "current_version": cur,
+			"latest_version": latest, "action": "update_available",
+			"auto_update": canAutoUpdate,
+			"message":     fmt.Sprintf("lark-cli %s %s %s available", cur, symArrow(), latest),
+			"url":         releaseURL(latest), "changelog": changelogURL(),
+		})
+		return nil
+	}
+	fmt.Fprintf(io.ErrOut, "Update available: %s %s %s\n", cur, symArrow(), latest)
+	fmt.Fprintf(io.ErrOut, "  Release:   %s\n", releaseURL(latest))
+	fmt.Fprintf(io.ErrOut, "  Changelog: %s\n", changelogURL())
+	if canAutoUpdate {
+		fmt.Fprintf(io.ErrOut, "\nRun `lark-cli update` to install.\n")
+	} else {
+		fmt.Fprintf(io.ErrOut, "\nDownload the release above to update manually.\n")
+	}
+	return nil
+}
+
+func doManualUpdate(opts *UpdateOptions, io *cmdutil.IOStreams, cur, latest string, detect selfupdate.DetectResult) error {
+	reason := detect.ManualReason()
+	if opts.JSON {
+		output.PrintJson(io.Out, map[string]interface{}{
+			"ok": true, "previous_version": cur, "latest_version": latest,
+			"action":  "manual_required",
+			"message": fmt.Sprintf("Automatic update unavailable: %s (path: %s)", reason, detect.ResolvedPath),
+			"url":     releaseURL(latest), "changelog": changelogURL(),
+		})
+		return nil
+	}
+	fmt.Fprintf(io.ErrOut, "Automatic update unavailable: %s (path: %s).\n\n", reason, detect.ResolvedPath)
+	fmt.Fprintf(io.ErrOut, "To update manually, download the latest release:\n")
+	fmt.Fprintf(io.ErrOut, "  Release:   %s\n", releaseURL(latest))
+	fmt.Fprintf(io.ErrOut, "  Changelog: %s\n", changelogURL())
+	fmt.Fprintf(io.ErrOut, "\nOr install via npm:\n  npm install -g %s@%s\n", selfupdate.NpmPackage, latest)
+	fmt.Fprintf(io.ErrOut, "\nAfter updating, also update skills:\n  npx -y skills add larksuite/cli -g -y\n")
+	return nil
+}
+
+func doNpmUpdate(opts *UpdateOptions, io *cmdutil.IOStreams, cur, latest string, updater *selfupdate.Updater) error {
+	restore, err := updater.PrepareSelfReplace()
+	if err != nil {
+		return reportError(opts, io, output.ExitAPI, "update_error", "failed to prepare update: %s", err)
+	}
+
+	if !opts.JSON {
+		fmt.Fprintf(io.ErrOut, "Updating lark-cli %s %s %s via npm ...\n", cur, symArrow(), latest)
+	}
+
+	npmResult := updater.RunNpmInstall(latest)
+	if npmResult.Err != nil {
+		restore()
+		combined := npmResult.CombinedOutput()
+		if opts.JSON {
+			output.PrintJson(io.Out, map[string]interface{}{
+				"ok": false, "error": map[string]interface{}{
+					"type": "update_error", "message": fmt.Sprintf("npm install failed: %s", npmResult.Err),
+					"detail": selfupdate.Truncate(combined, maxNpmOutput),
+					"hint":   permissionHint(combined),
+				},
+			})
+			return output.ErrBare(output.ExitAPI)
+		}
+		if npmResult.Stdout.Len() > 0 {
+			fmt.Fprint(io.ErrOut, npmResult.Stdout.String())
+		}
+		if npmResult.Stderr.Len() > 0 {
+			fmt.Fprint(io.ErrOut, npmResult.Stderr.String())
+		}
+		fmt.Fprintf(io.ErrOut, "\n%s Update failed: %s\n", symFail(), npmResult.Err)
+		if hint := permissionHint(combined); hint != "" {
+			fmt.Fprintf(io.ErrOut, "  %s\n", hint)
+		}
+		return output.ErrBare(output.ExitAPI)
+	}
+
+	// Verify the new binary is functional before proceeding.
+	// If corrupt, restore the previous version from .old.
+	if err := updater.VerifyBinary(latest); err != nil {
+		restore()
+		msg := fmt.Sprintf("new binary verification failed: %s", err)
+		hint := verificationFailureHint(updater, latest)
+		if opts.JSON {
+			output.PrintJson(io.Out, map[string]interface{}{
+				"ok":    false,
+				"error": map[string]interface{}{"type": "update_error", "message": msg, "hint": hint},
+			})
+			return output.ErrBare(output.ExitAPI)
+		}
+		fmt.Fprintf(io.ErrOut, "\n%s %s\n", symFail(), msg)
+		fmt.Fprintf(io.ErrOut, "  %s\n", hint)
+		return output.ErrBare(output.ExitAPI)
+	}
+
+	// Skills update (best-effort).
+	skillsResult := updater.RunSkillsUpdate()
+
+	if opts.JSON {
+		result := map[string]interface{}{
+			"ok": true, "previous_version": cur, "current_version": latest,
+			"latest_version": latest, "action": "updated",
+			"message": fmt.Sprintf("lark-cli updated from %s to %s", cur, latest),
+			"url":     releaseURL(latest), "changelog": changelogURL(),
+		}
+		if skillsResult.Err != nil {
+			result["skills_warning"] = fmt.Sprintf("skills update failed: %s", skillsResult.Err)
+			if detail := strings.TrimSpace(skillsResult.Stderr.String()); detail != "" {
+				result["skills_detail"] = selfupdate.Truncate(detail, maxNpmOutput)
+			}
+		}
+		output.PrintJson(io.Out, result)
+		return nil
+	}
+
+	fmt.Fprintf(io.ErrOut, "\n%s Successfully updated lark-cli from %s to %s\n", symOK(), cur, latest)
+	fmt.Fprintf(io.ErrOut, "  Changelog: %s\n", changelogURL())
+	fmt.Fprintf(io.ErrOut, "\nUpdating skills ...\n")
+	if skillsResult.Err != nil {
+		fmt.Fprintf(io.ErrOut, "%s Skills update failed: %s\n", symWarn(), skillsResult.Err)
+		if detail := strings.TrimSpace(skillsResult.Stderr.String()); detail != "" {
+			fmt.Fprintf(io.ErrOut, "  %s\n", selfupdate.Truncate(detail, 500))
+		}
+		fmt.Fprintf(io.ErrOut, "  Run manually: npx -y skills add larksuite/cli -g -y\n")
+	} else {
+		fmt.Fprintf(io.ErrOut, "%s Skills updated\n", symOK())
+	}
+	return nil
+}
+
+func permissionHint(npmOutput string) string {
+	if strings.Contains(npmOutput, "EACCES") && !isWindows() {
+		return "Permission denied. Try: sudo lark-cli update, or adjust your npm global prefix: https://docs.npmjs.com/resolving-eacces-permissions-errors"
+	}
+	return ""
+}
+
+func verificationFailureHint(updater *selfupdate.Updater, latest string) string {
+	if updater.CanRestorePreviousVersion() {
+		return "the previous version has been restored"
+	}
+	return fmt.Sprintf("automatic rollback is unavailable on this platform; reinstall manually: npm install -g %s@%s, or download %s", selfupdate.NpmPackage, latest, releaseURL(latest))
+}

cmd/update/update_test.go

@@ -0,0 +1,851 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdupdate
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+	"testing"
+
+	"github.com/larksuite/cli/internal/cmdutil"
+	"github.com/larksuite/cli/internal/core"
+	"github.com/larksuite/cli/internal/output"
+	"github.com/larksuite/cli/internal/selfupdate"
+)
+
+// newTestFactory creates a test factory with minimal config.
+func newTestFactory(t *testing.T) (*cmdutil.Factory, *bytes.Buffer, *bytes.Buffer) {
+	t.Helper()
+	f, stdout, stderr, _ := cmdutil.TestFactory(t, &core.CliConfig{})
+	return f, stdout, stderr
+}
+
+// mockDetect sets up newUpdater to return an Updater with the given DetectResult.
+// It preserves any existing NpmInstallOverride/SkillsUpdateOverride that may be set later.
+func mockDetect(t *testing.T, result selfupdate.DetectResult) {
+	t.Helper()
+	origNew := newUpdater
+	newUpdater = func() *selfupdate.Updater {
+		u := selfupdate.New()
+		u.DetectOverride = func() selfupdate.DetectResult { return result }
+		return u
+	}
+	t.Cleanup(func() { newUpdater = origNew })
+}
+
+// mockDetectAndNpm sets up newUpdater with detect, npm install, and skills overrides all at once.
+func mockDetectAndNpm(t *testing.T, result selfupdate.DetectResult,
+	npmFn func(string) *selfupdate.NpmResult,
+	skillsFn func() *selfupdate.NpmResult) {
+	t.Helper()
+	origNew := newUpdater
+	newUpdater = func() *selfupdate.Updater {
+		u := selfupdate.New()
+		u.DetectOverride = func() selfupdate.DetectResult { return result }
+		u.NpmInstallOverride = npmFn
+		u.SkillsUpdateOverride = skillsFn
+		u.VerifyOverride = func(string) error { return nil }
+		return u
+	}
+	t.Cleanup(func() { newUpdater = origNew })
+}
+
+func TestUpdateAlreadyUpToDate_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "1.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "already_up_to_date"`) {
+		t.Errorf("expected already_up_to_date in JSON output, got: %s", out)
+	}
+	if !strings.Contains(out, `"ok": true`) {
+		t.Errorf("expected ok:true in JSON output, got: %s", out)
+	}
+}
+
+func TestUpdateAlreadyUpToDate_Human(t *testing.T) {
+	f, _, stderr := newTestFactory(t)
+
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "1.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+
+	out := stderr.String()
+	if !strings.Contains(out, "already up to date") {
+		t.Errorf("expected 'already up to date' in stderr, got: %s", out)
+	}
+}
+
+func TestUpdateManual_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+	cmd.SilenceErrors = true
+	cmd.SilenceUsage = true
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetect(t, selfupdate.DetectResult{Method: selfupdate.InstallManual, ResolvedPath: "/usr/local/bin/lark-cli"})
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "manual_required"`) {
+		t.Errorf("expected manual_required in output, got: %s", out)
+	}
+	if !strings.Contains(out, "not installed via npm") {
+		t.Errorf("expected accurate reason in output, got: %s", out)
+	}
+	if !strings.Contains(out, "releases/tag/v2.0.0") {
+		t.Errorf("expected version-pinned URL in output, got: %s", out)
+	}
+}
+
+func TestUpdateManual_Human(t *testing.T) {
+	f, _, stderr := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetect(t, selfupdate.DetectResult{Method: selfupdate.InstallManual, ResolvedPath: "/usr/local/bin/lark-cli"})
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stderr.String()
+	if !strings.Contains(out, "not installed via npm") {
+		t.Errorf("expected 'not installed via npm' in stderr, got: %s", out)
+	}
+	if !strings.Contains(out, "releases/tag/v2.0.0") {
+		t.Errorf("expected version-pinned URL in stderr, got: %s", out)
+	}
+}
+
+func TestUpdateNpm_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetectAndNpm(t,
+		selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true},
+		func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+		func() *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+	)
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "updated"`) {
+		t.Errorf("expected updated in output, got: %s", out)
+	}
+}
+
+func TestUpdateNpm_Human(t *testing.T) {
+	f, _, stderr := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetectAndNpm(t,
+		selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true},
+		func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+		func() *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+	)
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stderr.String()
+	if !strings.Contains(out, "Successfully updated") {
+		t.Errorf("expected success message in stderr, got: %s", out)
+	}
+}
+
+func TestUpdateForce_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--force", "--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "1.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetectAndNpm(t,
+		selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true},
+		func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+		func() *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+	)
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "updated"`) {
+		t.Errorf("expected updated in JSON output, got: %s", out)
+	}
+}
+
+func TestUpdateFetchError_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "", errors.New("network timeout") }
+	defer func() { fetchLatest = origFetch }()
+
+	err := cmd.Execute()
+	// cobra silences errors when RunE returns; we just check stdout
+	_ = err
+	out := stdout.String()
+	if !strings.Contains(out, `"ok": false`) {
+		t.Errorf("expected ok:false in JSON output, got: %s", out)
+	}
+	if !strings.Contains(out, "network timeout") {
+		t.Errorf("expected 'network timeout' in JSON output, got: %s", out)
+	}
+}
+
+func TestUpdateFetchError_Human(t *testing.T) {
+	f, _, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "", errors.New("network timeout") }
+	defer func() { fetchLatest = origFetch }()
+
+	// Suppress cobra's default error printing.
+	cmd.SilenceErrors = true
+	cmd.SilenceUsage = true
+
+	err := cmd.Execute()
+	if err == nil {
+		t.Fatal("expected non-nil error, got nil")
+	}
+	var exitErr *output.ExitError
+	if !errors.As(err, &exitErr) {
+		t.Fatalf("expected *output.ExitError, got %T: %v", err, err)
+	}
+	if exitErr.Code != output.ExitNetwork {
+		t.Errorf("expected ExitNetwork (%d), got %d", output.ExitNetwork, exitErr.Code)
+	}
+}
+
+func TestUpdateInvalidVersion_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "not-a-version", nil }
+	defer func() { fetchLatest = origFetch }()
+
+	_ = cmd.Execute()
+	out := stdout.String()
+	if !strings.Contains(out, "invalid version") {
+		t.Errorf("expected 'invalid version' in JSON output, got: %s", out)
+	}
+}
+
+func TestUpdateDevVersion_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "1.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "DEV" }
+	defer func() { currentVersion = origVersion }()
+	mockDetectAndNpm(t,
+		selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true},
+		func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+		func() *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+	)
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "updated"`) {
+		t.Errorf("expected updated in JSON output, got: %s", out)
+	}
+}
+
+func TestUpdateNpmFail_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+
+	origNew := newUpdater
+	newUpdater = func() *selfupdate.Updater {
+		u := selfupdate.New()
+		u.DetectOverride = func() selfupdate.DetectResult {
+			return selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true}
+		}
+		u.NpmInstallOverride = func(version string) *selfupdate.NpmResult {
+			r := &selfupdate.NpmResult{}
+			fmt.Fprint(&r.Stderr, "EACCES: permission denied")
+			r.Err = errors.New("npm install failed")
+			return r
+		}
+		return u
+	}
+	defer func() { newUpdater = origNew }()
+
+	_ = cmd.Execute()
+	out := stdout.String()
+	if !strings.Contains(out, "permission denied") {
+		t.Errorf("expected 'permission denied' in JSON output, got: %s", out)
+	}
+	if !strings.Contains(out, `"hint"`) {
+		t.Errorf("expected 'hint' field in JSON output, got: %s", out)
+	}
+}
+
+func TestUpdateNpmFail_Human(t *testing.T) {
+	f, _, stderr := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+
+	origNew := newUpdater
+	newUpdater = func() *selfupdate.Updater {
+		u := selfupdate.New()
+		u.DetectOverride = func() selfupdate.DetectResult {
+			return selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true}
+		}
+		u.NpmInstallOverride = func(version string) *selfupdate.NpmResult {
+			r := &selfupdate.NpmResult{}
+			fmt.Fprint(&r.Stderr, "EACCES: permission denied")
+			r.Err = errors.New("npm install failed")
+			return r
+		}
+		return u
+	}
+	defer func() { newUpdater = origNew }()
+
+	cmd.SilenceErrors = true
+	cmd.SilenceUsage = true
+	_ = cmd.Execute()
+	out := stderr.String()
+	if !strings.Contains(out, "Update failed") {
+		t.Errorf("expected 'Update failed' in stderr, got: %s", out)
+	}
+	if !strings.Contains(out, "Permission denied") {
+		t.Errorf("expected permission hint in stderr, got: %s", out)
+	}
+}
+
+func TestUpdateNpmVerifyFail_JSON_NoRestoreHintWhenBackupUnavailable(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+
+	origNew := newUpdater
+	newUpdater = func() *selfupdate.Updater {
+		u := selfupdate.New()
+		u.DetectOverride = func() selfupdate.DetectResult {
+			return selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true}
+		}
+		u.NpmInstallOverride = func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} }
+		u.VerifyOverride = func(string) error { return errors.New("bad binary") }
+		u.RestoreAvailableOverride = func() bool { return false }
+		u.SkillsUpdateOverride = func() *selfupdate.NpmResult {
+			t.Fatal("skills update should not run when binary verification fails")
+			return nil
+		}
+		return u
+	}
+	defer func() { newUpdater = origNew }()
+
+	err := cmd.Execute()
+	if err == nil {
+		t.Fatal("expected verification failure")
+	}
+	var exitErr *output.ExitError
+	if !errors.As(err, &exitErr) {
+		t.Fatalf("expected *output.ExitError, got %T: %v", err, err)
+	}
+	if exitErr.Code != output.ExitAPI {
+		t.Fatalf("expected ExitAPI (%d), got %d", output.ExitAPI, exitErr.Code)
+	}
+
+	out := stdout.String()
+	if !strings.Contains(out, "automatic rollback is unavailable") {
+		t.Errorf("expected unavailable rollback hint, got: %s", out)
+	}
+	if strings.Contains(out, "previous version has been restored") {
+		t.Errorf("should not claim restore when no backup is available, got: %s", out)
+	}
+	if !strings.Contains(out, "npm install -g @larksuite/cli@2.0.0") {
+		t.Errorf("expected manual reinstall command in hint, got: %s", out)
+	}
+}
+
+func TestUpdateCheck_JSON_Npm(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json", "--check"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetect(t, selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true})
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "update_available"`) {
+		t.Errorf("expected update_available action, got: %s", out)
+	}
+	if !strings.Contains(out, `"auto_update": true`) {
+		t.Errorf("expected auto_update:true for npm, got: %s", out)
+	}
+	if !strings.Contains(out, "releases/tag/v2.0.0") {
+		t.Errorf("expected version-pinned release URL, got: %s", out)
+	}
+	if !strings.Contains(out, "CHANGELOG") {
+		t.Errorf("expected changelog URL, got: %s", out)
+	}
+}
+
+func TestUpdateCheck_Human_Npm(t *testing.T) {
+	f, _, stderr := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--check"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetect(t, selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true})
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stderr.String()
+	if !strings.Contains(out, "Update available") {
+		t.Errorf("expected 'Update available' in stderr, got: %s", out)
+	}
+	if !strings.Contains(out, "lark-cli update") {
+		t.Errorf("expected 'lark-cli update' instruction for npm, got: %s", out)
+	}
+}
+
+func TestUpdateCheck_Human_Manual(t *testing.T) {
+	f, _, stderr := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--check"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetect(t, selfupdate.DetectResult{Method: selfupdate.InstallManual, ResolvedPath: "/usr/local/bin/lark-cli"})
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stderr.String()
+	if !strings.Contains(out, "Update available") {
+		t.Errorf("expected 'Update available' in stderr, got: %s", out)
+	}
+	if !strings.Contains(out, "manually") {
+		t.Errorf("expected manual download instruction for non-npm, got: %s", out)
+	}
+	if strings.Contains(out, "lark-cli update` to install") {
+		t.Errorf("should NOT suggest 'lark-cli update' for manual install, got: %s", out)
+	}
+}
+
+func TestUpdateNpmNotFound_FallsBackToManual(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	// npm detected (node_modules in path) but npm binary not available
+	mockDetect(t, selfupdate.DetectResult{
+		Method:       selfupdate.InstallNpm,
+		ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli",
+		NpmAvailable: false,
+	})
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "manual_required"`) {
+		t.Errorf("expected manual_required when npm not found, got: %s", out)
+	}
+	// Must say "npm is not available", not generic "not installed via npm"
+	if !strings.Contains(out, "npm is not available") {
+		t.Errorf("expected 'npm is not available' reason when npm detected but missing, got: %s", out)
+	}
+}
+
+func TestReleaseURL(t *testing.T) {
+	got := releaseURL("2.0.0")
+	if got != "https://github.com/larksuite/cli/releases/tag/v2.0.0" {
+		t.Errorf("expected version-pinned URL, got: %s", got)
+	}
+	got2 := releaseURL("v1.5.0")
+	if got2 != "https://github.com/larksuite/cli/releases/tag/v1.5.0" {
+		t.Errorf("expected no double v prefix, got: %s", got2)
+	}
+}
+
+func TestPermissionHint(t *testing.T) {
+	origOS := currentOS
+	defer func() { currentOS = origOS }()
+
+	// Linux: EACCES should produce a hint with npm prefix guidance.
+	currentOS = "linux"
+	hint := permissionHint("EACCES: permission denied, access '/usr/local/lib'")
+	if !strings.Contains(hint, "npm global prefix") {
+		t.Errorf("expected npm prefix hint on linux, got: %s", hint)
+	}
+	if strings.Contains(hint, "sudo npm install -g") {
+		t.Errorf("should not suggest raw sudo npm install, got: %s", hint)
+	}
+
+	// Windows: EACCES hint is suppressed (no EACCES on Windows).
+	currentOS = "windows"
+	hint = permissionHint("EACCES: permission denied")
+	if hint != "" {
+		t.Errorf("expected empty hint on Windows, got: %s", hint)
+	}
+
+	// Non-EACCES error: always empty.
+	currentOS = "linux"
+	if got := permissionHint("some other error"); got != "" {
+		t.Errorf("expected empty hint for non-EACCES, got: %s", got)
+	}
+}
+
+func TestUpdateWindows_NpmSuccess_JSON(t *testing.T) {
+	// With the rename trick, Windows npm installs can now auto-update.
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	origOS := currentOS
+	currentOS = osWindows
+	defer func() { currentOS = origOS }()
+	mockDetectAndNpm(t,
+		selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: `C:\npm\node_modules\@larksuite\cli\bin\lark-cli.exe`, NpmAvailable: true},
+		func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+		func() *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+	)
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"action": "updated"`) {
+		t.Errorf("expected updated on Windows with rename trick, got: %s", out)
+	}
+}
+
+func TestUpdateWindows_Check_JSON(t *testing.T) {
+	// --check on Windows npm should report auto_update: true (rename trick available).
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json", "--check"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	origOS := currentOS
+	currentOS = osWindows
+	defer func() { currentOS = origOS }()
+	mockDetect(t, selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: `C:\node_modules\@larksuite\cli\bin\lark-cli.exe`, NpmAvailable: true})
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	if !strings.Contains(out, `"auto_update": true`) {
+		t.Errorf("expected auto_update:true on Windows (rename trick), got: %s", out)
+	}
+}
+
+func TestUpdateWindows_Symbols(t *testing.T) {
+	origOS := currentOS
+	defer func() { currentOS = origOS }()
+
+	currentOS = "windows"
+	if symOK() != "[OK]" {
+		t.Errorf("expected [OK] on Windows, got: %s", symOK())
+	}
+	if symFail() != "[FAIL]" {
+		t.Errorf("expected [FAIL] on Windows, got: %s", symFail())
+	}
+	if symWarn() != "[WARN]" {
+		t.Errorf("expected [WARN] on Windows, got: %s", symWarn())
+	}
+	if symArrow() != "->" {
+		t.Errorf("expected -> on Windows, got: %s", symArrow())
+	}
+
+	currentOS = "darwin"
+	if symOK() != "\u2713" {
+		t.Errorf("expected \u2713 on darwin, got: %s", symOK())
+	}
+	if symArrow() != "\u2192" {
+		t.Errorf("expected \u2192 on darwin, got: %s", symArrow())
+	}
+}
+
+func TestUpdateNpm_SkillsSuccess_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+	mockDetectAndNpm(t,
+		selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true},
+		func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+		func() *selfupdate.NpmResult { return &selfupdate.NpmResult{} },
+	)
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	// Should NOT have skills_warning when skills succeed
+	if strings.Contains(out, "skills_warning") {
+		t.Errorf("expected no skills_warning on success, got: %s", out)
+	}
+}
+
+func TestUpdateNpm_SkillsFail_JSON(t *testing.T) {
+	f, stdout, _ := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{"--json"})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+
+	origNew := newUpdater
+	newUpdater = func() *selfupdate.Updater {
+		u := selfupdate.New()
+		u.DetectOverride = func() selfupdate.DetectResult {
+			return selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true}
+		}
+		u.NpmInstallOverride = func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} }
+		u.VerifyOverride = func(string) error { return nil }
+		// Skills update fails
+		u.SkillsUpdateOverride = func() *selfupdate.NpmResult {
+			r := &selfupdate.NpmResult{}
+			r.Stderr.WriteString("npx: command not found")
+			r.Err = fmt.Errorf("exit status 127")
+			return r
+		}
+		return u
+	}
+	defer func() { newUpdater = origNew }()
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stdout.String()
+	// CLI update should still succeed (ok:true)
+	if !strings.Contains(out, `"ok": true`) {
+		t.Errorf("expected ok:true despite skills failure, got: %s", out)
+	}
+	if !strings.Contains(out, `"action": "updated"`) {
+		t.Errorf("expected action:updated despite skills failure, got: %s", out)
+	}
+	// Should have skills_warning with detail
+	if !strings.Contains(out, "skills_warning") {
+		t.Errorf("expected skills_warning in output, got: %s", out)
+	}
+	if !strings.Contains(out, "skills_detail") {
+		t.Errorf("expected skills_detail in output, got: %s", out)
+	}
+}
+
+func TestUpdateNpm_SkillsFail_Human(t *testing.T) {
+	f, _, stderr := newTestFactory(t)
+	cmd := NewCmdUpdate(f)
+	cmd.SetArgs([]string{})
+
+	origFetch := fetchLatest
+	fetchLatest = func() (string, error) { return "2.0.0", nil }
+	defer func() { fetchLatest = origFetch }()
+	origVersion := currentVersion
+	currentVersion = func() string { return "1.0.0" }
+	defer func() { currentVersion = origVersion }()
+
+	origNew := newUpdater
+	newUpdater = func() *selfupdate.Updater {
+		u := selfupdate.New()
+		u.DetectOverride = func() selfupdate.DetectResult {
+			return selfupdate.DetectResult{Method: selfupdate.InstallNpm, ResolvedPath: "/node_modules/@larksuite/cli/bin/lark-cli", NpmAvailable: true}
+		}
+		u.NpmInstallOverride = func(version string) *selfupdate.NpmResult { return &selfupdate.NpmResult{} }
+		u.VerifyOverride = func(string) error { return nil }
+		u.SkillsUpdateOverride = func() *selfupdate.NpmResult {
+			r := &selfupdate.NpmResult{}
+			r.Stderr.WriteString("npx: command not found")
+			r.Err = fmt.Errorf("exit status 127")
+			return r
+		}
+		return u
+	}
+	defer func() { newUpdater = origNew }()
+
+	err := cmd.Execute()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	out := stderr.String()
+	// CLI update should still show success
+	if !strings.Contains(out, "Successfully updated") {
+		t.Errorf("expected CLI success message, got: %s", out)
+	}
+	// Skills warning should be shown
+	if !strings.Contains(out, "Skills update failed") {
+		t.Errorf("expected skills failure warning, got: %s", out)
+	}
+	if !strings.Contains(out, "npx -y skills add") {
+		t.Errorf("expected manual skills command hint, got: %s", out)
+	}
+}
+
+func TestTruncate(t *testing.T) {
+	long := strings.Repeat("x", 3000)
+	got := selfupdate.Truncate(long, 2000)
+	if len(got) != 2000 {
+		t.Errorf("expected truncated length 2000, got %d", len(got))
+	}
+
+	short := "hello"
+	got2 := selfupdate.Truncate(short, 2000)
+	if got2 != "hello" {
+		t.Errorf("expected 'hello', got %q", got2)
+	}
+}

extension/credential/registry.go

@@ -3,7 +3,10 @@
 
 package credential
 
-import "sync"
+import (
+	"sort"
+	"sync"
+)
 
 var (
 	mu        sync.Mutex
@@ -11,12 +14,28 @@ var (
 )
 
 // Register registers a credential Provider.
-// Providers are consulted in registration order.
+// Providers are consulted in priority order (lowest value first).
+// Providers that implement Priority() int are sorted accordingly;
+// those that do not default to priority 10.
 // Typically called from init() via blank import.
 func Register(p Provider) {
 	mu.Lock()
 	defer mu.Unlock()
 	providers = append(providers, p)
+	sort.SliceStable(providers, func(i, j int) bool {
+		return providerPriority(providers[i]) < providerPriority(providers[j])
+	})
+}
+
+// providerPriority returns the priority of a provider.
+// If the provider implements interface{ Priority() int }, that value is used;
+// otherwise 10 is returned as the default priority.
+// Lower values are consulted first.
+func providerPriority(p Provider) int {
+	if pp, ok := p.(interface{ Priority() int }); ok {
+		return pp.Priority()
+	}
+	return 10
 }
 
 // Providers returns all registered providers (snapshot).

extension/credential/registry_test.go

@@ -37,6 +37,32 @@ func TestRegisterAndProviders(t *testing.T) {
 	}
 }
 
+type priorityProvider struct {
+	stubProvider
+	priority int
+}
+
+func (p *priorityProvider) Priority() int { return p.priority }
+
+func TestRegister_PriorityOrder(t *testing.T) {
+	mu.Lock()
+	old := providers
+	providers = nil
+	mu.Unlock()
+	defer func() { mu.Lock(); providers = old; mu.Unlock() }()
+
+	Register(&stubProvider{name: "env"})                                                  // priority 10 (default)
+	Register(&priorityProvider{stubProvider: stubProvider{name: "sidecar"}, priority: 0}) // priority 0 (first)
+
+	got := Providers()
+	if len(got) != 2 {
+		t.Fatalf("expected 2, got %d", len(got))
+	}
+	if got[0].Name() != "sidecar" || got[1].Name() != "env" {
+		t.Errorf("expected sidecar before env, got %s, %s", got[0].Name(), got[1].Name())
+	}
+}
+
 func TestProviders_ReturnsSnapshot(t *testing.T) {
 	mu.Lock()
 	old := providers

extension/credential/sidecar/provider.go

@@ -0,0 +1,131 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build authsidecar
+
+// Package sidecar provides a noop credential provider for the auth sidecar
+// proxy mode. When LARKSUITE_CLI_AUTH_PROXY is set, this provider supplies
+// placeholder credentials so the CLI's auth pipeline can proceed normally.
+// Real tokens are never present in the sandbox; the sidecar transport
+// interceptor routes requests to the trusted sidecar process instead.
+package sidecar
+
+import (
+	"context"
+	"fmt"
+	"os"
+
+	"github.com/larksuite/cli/extension/credential"
+	"github.com/larksuite/cli/internal/envvars"
+	"github.com/larksuite/cli/sidecar"
+)
+
+// Provider is the noop credential provider for sidecar mode.
+type Provider struct{}
+
+func (p *Provider) Name() string  { return "sidecar" }
+func (p *Provider) Priority() int { return 0 }
+
+// ResolveAccount returns a minimal Account when sidecar mode is active.
+// The account contains AppID and Brand from environment variables, a
+// placeholder secret, and SupportedIdentities derived from STRICT_MODE.
+// Returns nil, nil when sidecar mode is not active (AUTH_PROXY not set).
+func (p *Provider) ResolveAccount(ctx context.Context) (*credential.Account, error) {
+	proxyAddr := os.Getenv(envvars.CliAuthProxy)
+	if proxyAddr == "" {
+		return nil, nil // not in sidecar mode, skip
+	}
+
+	if err := sidecar.ValidateProxyAddr(proxyAddr); err != nil {
+		return nil, &credential.BlockError{
+			Provider: "sidecar",
+			Reason:   fmt.Sprintf("invalid %s %q: %v", envvars.CliAuthProxy, proxyAddr, err),
+		}
+	}
+
+	appID := os.Getenv(envvars.CliAppID)
+	if appID == "" {
+		return nil, &credential.BlockError{
+			Provider: "sidecar",
+			Reason:   envvars.CliAuthProxy + " is set but " + envvars.CliAppID + " is missing",
+		}
+	}
+
+	if os.Getenv(envvars.CliProxyKey) == "" {
+		return nil, &credential.BlockError{
+			Provider: "sidecar",
+			Reason:   envvars.CliAuthProxy + " is set but " + envvars.CliProxyKey + " is missing",
+		}
+	}
+
+	brand := credential.Brand(os.Getenv(envvars.CliBrand))
+	if brand == "" {
+		brand = credential.BrandFeishu
+	}
+
+	acct := &credential.Account{
+		AppID:     appID,
+		AppSecret: credential.NoAppSecret,
+		Brand:     brand,
+	}
+
+	// Parse DefaultAs
+	switch id := credential.Identity(os.Getenv(envvars.CliDefaultAs)); id {
+	case "", credential.IdentityAuto:
+		acct.DefaultAs = id
+	case credential.IdentityUser, credential.IdentityBot:
+		acct.DefaultAs = id
+	default:
+		return nil, &credential.BlockError{
+			Provider: "sidecar",
+			Reason:   fmt.Sprintf("invalid %s %q (want user, bot, or auto)", envvars.CliDefaultAs, id),
+		}
+	}
+
+	// Parse SupportedIdentities from STRICT_MODE, default to SupportsAll.
+	switch strictMode := os.Getenv(envvars.CliStrictMode); strictMode {
+	case "bot":
+		acct.SupportedIdentities = credential.SupportsBot
+	case "user":
+		acct.SupportedIdentities = credential.SupportsUser
+	case "off", "":
+		acct.SupportedIdentities = credential.SupportsAll
+	default:
+		return nil, &credential.BlockError{
+			Provider: "sidecar",
+			Reason:   fmt.Sprintf("invalid %s %q (want bot, user, or off)", envvars.CliStrictMode, strictMode),
+		}
+	}
+
+	return acct, nil
+}
+
+// ResolveToken returns a sentinel token whose value encodes the token type.
+// The transport interceptor reads this sentinel to determine the identity
+// (user vs bot), strips it, and the sidecar injects the real token.
+// Returns nil, nil when sidecar mode is not active.
+func (p *Provider) ResolveToken(ctx context.Context, req credential.TokenSpec) (*credential.Token, error) {
+	if os.Getenv(envvars.CliAuthProxy) == "" {
+		return nil, nil
+	}
+
+	var sentinel string
+	switch req.Type {
+	case credential.TokenTypeUAT:
+		sentinel = sidecar.SentinelUAT
+	case credential.TokenTypeTAT:
+		sentinel = sidecar.SentinelTAT
+	default:
+		return nil, nil
+	}
+
+	return &credential.Token{
+		Value:  sentinel,
+		Scopes: "", // empty → scope pre-check is skipped
+		Source: "sidecar",
+	}, nil
+}
+
+func init() {
+	credential.Register(&Provider{})
+}

extension/credential/sidecar/provider_test.go

@@ -0,0 +1,188 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build authsidecar
+
+package sidecar
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	"github.com/larksuite/cli/extension/credential"
+	"github.com/larksuite/cli/internal/envvars"
+	"github.com/larksuite/cli/sidecar"
+)
+
+func setEnv(t *testing.T, key, value string) {
+	t.Helper()
+	old, hadOld := os.LookupEnv(key)
+	os.Setenv(key, value)
+	t.Cleanup(func() {
+		if hadOld {
+			os.Setenv(key, old)
+		} else {
+			os.Unsetenv(key)
+		}
+	})
+}
+
+func unsetEnv(t *testing.T, key string) {
+	t.Helper()
+	old, hadOld := os.LookupEnv(key)
+	os.Unsetenv(key)
+	t.Cleanup(func() {
+		if hadOld {
+			os.Setenv(key, old)
+		}
+	})
+}
+
+func TestResolveAccount_NotActive(t *testing.T) {
+	unsetEnv(t, envvars.CliAuthProxy)
+
+	p := &Provider{}
+	acct, err := p.ResolveAccount(context.Background())
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if acct != nil {
+		t.Fatal("expected nil account when AUTH_PROXY not set")
+	}
+}
+
+func TestResolveAccount_Active(t *testing.T) {
+	setEnv(t, envvars.CliAuthProxy, "http://127.0.0.1:16384")
+	setEnv(t, envvars.CliProxyKey, "test-key")
+	setEnv(t, envvars.CliAppID, "cli_test123")
+	setEnv(t, envvars.CliBrand, "lark")
+	unsetEnv(t, envvars.CliDefaultAs)
+	unsetEnv(t, envvars.CliStrictMode)
+
+	p := &Provider{}
+	acct, err := p.ResolveAccount(context.Background())
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if acct == nil {
+		t.Fatal("expected non-nil account")
+	}
+	if acct.AppID != "cli_test123" {
+		t.Errorf("AppID = %q, want %q", acct.AppID, "cli_test123")
+	}
+	if acct.Brand != credential.BrandLark {
+		t.Errorf("Brand = %q, want %q", acct.Brand, credential.BrandLark)
+	}
+	if acct.AppSecret != credential.NoAppSecret {
+		t.Errorf("AppSecret should be NoAppSecret, got %q", acct.AppSecret)
+	}
+	if acct.SupportedIdentities != credential.SupportsAll {
+		t.Errorf("SupportedIdentities = %d, want %d (SupportsAll)", acct.SupportedIdentities, credential.SupportsAll)
+	}
+}
+
+func TestResolveAccount_MissingProxyKey(t *testing.T) {
+	setEnv(t, envvars.CliAuthProxy, "http://127.0.0.1:16384")
+	unsetEnv(t, envvars.CliProxyKey)
+	setEnv(t, envvars.CliAppID, "cli_test")
+
+	p := &Provider{}
+	_, err := p.ResolveAccount(context.Background())
+	if err == nil {
+		t.Fatal("expected error when PROXY_KEY is missing")
+	}
+	if _, ok := err.(*credential.BlockError); !ok {
+		t.Fatalf("expected BlockError, got %T: %v", err, err)
+	}
+}
+
+func TestResolveAccount_MissingAppID(t *testing.T) {
+	setEnv(t, envvars.CliAuthProxy, "http://127.0.0.1:16384")
+	setEnv(t, envvars.CliProxyKey, "test-key")
+	unsetEnv(t, envvars.CliAppID)
+
+	p := &Provider{}
+	_, err := p.ResolveAccount(context.Background())
+	if err == nil {
+		t.Fatal("expected error when APP_ID is missing")
+	}
+	if _, ok := err.(*credential.BlockError); !ok {
+		t.Fatalf("expected BlockError, got %T: %v", err, err)
+	}
+}
+
+func TestResolveAccount_StrictMode(t *testing.T) {
+	setEnv(t, envvars.CliAuthProxy, "http://127.0.0.1:16384")
+	setEnv(t, envvars.CliProxyKey, "test-key")
+	setEnv(t, envvars.CliAppID, "cli_test")
+
+	tests := []struct {
+		mode string
+		want credential.IdentitySupport
+	}{
+		{"bot", credential.SupportsBot},
+		{"user", credential.SupportsUser},
+		{"off", credential.SupportsAll},
+		{"", credential.SupportsAll},
+	}
+
+	p := &Provider{}
+	for _, tt := range tests {
+		t.Run("strict_"+tt.mode, func(t *testing.T) {
+			if tt.mode == "" {
+				unsetEnv(t, envvars.CliStrictMode)
+			} else {
+				setEnv(t, envvars.CliStrictMode, tt.mode)
+			}
+			acct, err := p.ResolveAccount(context.Background())
+			if err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+			if acct.SupportedIdentities != tt.want {
+				t.Errorf("SupportedIdentities = %d, want %d", acct.SupportedIdentities, tt.want)
+			}
+		})
+	}
+}
+
+func TestResolveToken_NotActive(t *testing.T) {
+	unsetEnv(t, envvars.CliAuthProxy)
+
+	p := &Provider{}
+	tok, err := p.ResolveToken(context.Background(), credential.TokenSpec{Type: credential.TokenTypeUAT})
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if tok != nil {
+		t.Fatal("expected nil token when AUTH_PROXY not set")
+	}
+}
+
+func TestResolveToken_Sentinels(t *testing.T) {
+	setEnv(t, envvars.CliAuthProxy, "http://127.0.0.1:16384")
+	setEnv(t, envvars.CliProxyKey, "test-key")
+
+	p := &Provider{}
+
+	// UAT
+	tok, err := p.ResolveToken(context.Background(), credential.TokenSpec{Type: credential.TokenTypeUAT})
+	if err != nil {
+		t.Fatalf("UAT: unexpected error: %v", err)
+	}
+	if tok.Value != sidecar.SentinelUAT {
+		t.Errorf("UAT value = %q, want %q", tok.Value, sidecar.SentinelUAT)
+	}
+	if tok.Scopes != "" {
+		t.Errorf("UAT scopes should be empty, got %q", tok.Scopes)
+	}
+
+	// TAT
+	tok, err = p.ResolveToken(context.Background(), credential.TokenSpec{Type: credential.TokenTypeTAT})
+	if err != nil {
+		t.Fatalf("TAT: unexpected error: %v", err)
+	}
+	if tok.Value != sidecar.SentinelTAT {
+		t.Errorf("TAT value = %q, want %q", tok.Value, sidecar.SentinelTAT)
+	}
+}

extension/transport/errors.go

@@ -0,0 +1,51 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"errors"
+	"fmt"
+)
+
+// ErrAborted is a sentinel matched by errors.Is on any extension-triggered
+// round-trip abort. Callers that only need to know whether an error was
+// caused by an extension interception should use:
+//
+//	if errors.Is(err, transport.ErrAborted) { ... }
+var ErrAborted = errors.New("round trip aborted by extension")
+
+// AbortError is returned by the built-in middleware when an AbortableInterceptor
+// short-circuits a request via PreRoundTripE. It wraps the extension's original
+// reason and carries the extension's Provider.Name() for traceability.
+//
+// Use errors.As to recover the typed error:
+//
+//	var aErr *transport.AbortError
+//	if errors.As(err, &aErr) {
+//	    log.Printf("blocked by %s: %v", aErr.Extension, aErr.Reason)
+//	}
+//
+// errors.Is(err, transport.ErrAborted) also works, and errors.Is against the
+// inner reason still works via Unwrap.
+type AbortError struct {
+	// Extension is the name of the Provider whose interceptor aborted the
+	// request (from Provider.Name()). May be empty if the provider did not
+	// supply a name.
+	Extension string
+	// Reason is the original non-nil error returned by PreRoundTripE.
+	Reason error
+}
+
+func (e *AbortError) Error() string {
+	if e.Extension != "" {
+		return fmt.Sprintf("extension %q aborted round trip: %v", e.Extension, e.Reason)
+	}
+	return fmt.Sprintf("extension aborted round trip: %v", e.Reason)
+}
+
+// Unwrap lets errors.Is / errors.As traverse to the underlying Reason.
+func (e *AbortError) Unwrap() error { return e.Reason }
+
+// Is enables errors.Is(err, ErrAborted) at any nesting depth.
+func (e *AbortError) Is(target error) bool { return target == ErrAborted }

extension/transport/errors_test.go

@@ -0,0 +1,103 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package transport
+
+import (
+	"errors"
+	"fmt"
+	"testing"
+)
+
+func TestAbortError_Error(t *testing.T) {
+	tests := []struct {
+		name string
+		err  *AbortError
+		want string
+	}{
+		{
+			name: "with extension name",
+			err:  &AbortError{Extension: "audit", Reason: errors.New("bad")},
+			want: `extension "audit" aborted round trip: bad`,
+		},
+		{
+			name: "without extension name",
+			err:  &AbortError{Reason: errors.New("bad")},
+			want: "extension aborted round trip: bad",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := tt.err.Error(); got != tt.want {
+				t.Fatalf("Error() = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestAbortError_Unwrap(t *testing.T) {
+	reason := errors.New("bad")
+	e := &AbortError{Reason: reason}
+	if got := e.Unwrap(); got != reason {
+		t.Fatalf("Unwrap() = %v, want %v", got, reason)
+	}
+}
+
+func TestAbortError_IsErrAborted(t *testing.T) {
+	e := &AbortError{Reason: errors.New("bad")}
+	if !errors.Is(e, ErrAborted) {
+		t.Fatal("errors.Is(e, ErrAborted) = false, want true")
+	}
+	// Sanity: not matched by unrelated sentinels.
+	if errors.Is(e, errors.New("other")) {
+		t.Fatal("errors.Is matched unrelated sentinel")
+	}
+}
+
+func TestAbortError_UnwrapReachesInnerSentinel(t *testing.T) {
+	// Extensions often return typed/sentinel errors; callers should still be
+	// able to errors.Is against those after the middleware wraps them.
+	innerSentinel := errors.New("policy-deny-42")
+	e := &AbortError{Reason: fmt.Errorf("wrapped: %w", innerSentinel)}
+	if !errors.Is(e, innerSentinel) {
+		t.Fatal("errors.Is(e, innerSentinel) = false, want true (Unwrap chain broken)")
+	}
+}
+
+func TestAbortError_As(t *testing.T) {
+	reason := errors.New("bad")
+	base := &AbortError{Extension: "audit", Reason: reason}
+
+	// Direct As.
+	var aErr *AbortError
+	if !errors.As(base, &aErr) {
+		t.Fatal("errors.As(base, *AbortError) = false")
+	}
+	if aErr.Extension != "audit" || aErr.Reason != reason {
+		t.Fatalf("aErr = %+v, want {audit, bad}", aErr)
+	}
+
+	// Nested As: even when the *AbortError is wrapped in another error,
+	// errors.As must still find it via Unwrap chain.
+	wrapped := fmt.Errorf("outer: %w", base)
+	var aErr2 *AbortError
+	if !errors.As(wrapped, &aErr2) {
+		t.Fatal("errors.As(wrapped, *AbortError) = false")
+	}
+	if aErr2 != base {
+		t.Fatalf("aErr2 = %p, want %p", aErr2, base)
+	}
+
+	// errors.Is still matches the sentinel through the outer wrapper.
+	if !errors.Is(wrapped, ErrAborted) {
+		t.Fatal("errors.Is(wrapped, ErrAborted) = false via nested wrap")
+	}
+}
+
+func TestErrAborted_IsItselfSentinel(t *testing.T) {
+	// Guard against accidental re-assignment of ErrAborted: a bare ErrAborted
+	// value should still satisfy errors.Is(err, ErrAborted) for symmetry.
+	if !errors.Is(ErrAborted, ErrAborted) {
+		t.Fatal("errors.Is(ErrAborted, ErrAborted) = false")
+	}
+}

extension/transport/sidecar/interceptor.go

@@ -0,0 +1,178 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build authsidecar
+
+// Package sidecar provides a transport interceptor for the auth sidecar
+// proxy mode. When LARKSUITE_CLI_AUTH_PROXY is set (an HTTP URL), all
+// outgoing requests are rewritten to the sidecar address. The interceptor
+// strips placeholder credentials, injects proxy headers, and signs each
+// request with HMAC-SHA256. No custom DialContext is needed — Go's
+// standard http.Transport connects to the sidecar via plain HTTP.
+package sidecar
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strings"
+
+	"github.com/larksuite/cli/extension/transport"
+	"github.com/larksuite/cli/internal/envvars"
+	"github.com/larksuite/cli/sidecar"
+)
+
+// Provider implements transport.Provider for the sidecar mode.
+type Provider struct{}
+
+func (p *Provider) Name() string { return "sidecar" }
+
+// ResolveInterceptor returns a SidecarInterceptor when sidecar mode is active.
+// Returns nil when sidecar mode is disabled or the proxy address is invalid;
+// in the latter case a warning is emitted to stderr and requests fall back to
+// the non-sidecar transport path (where the credential layer will typically
+// block them for lack of a valid account).
+func (p *Provider) ResolveInterceptor(ctx context.Context) transport.Interceptor {
+	proxyAddr := os.Getenv(envvars.CliAuthProxy)
+	if proxyAddr == "" {
+		return nil
+	}
+	if err := sidecar.ValidateProxyAddr(proxyAddr); err != nil {
+		fmt.Fprintf(os.Stderr, "WARNING: invalid %s, sidecar interceptor disabled: %v\n", envvars.CliAuthProxy, err)
+		return nil
+	}
+	key := os.Getenv(envvars.CliProxyKey)
+	return &Interceptor{
+		key:         []byte(key),
+		sidecarHost: sidecar.ProxyHost(proxyAddr),
+	}
+}
+
+// Interceptor rewrites requests for the sidecar proxy.
+type Interceptor struct {
+	key         []byte // HMAC signing key
+	sidecarHost string // sidecar host:port for URL rewriting
+}
+
+// PreRoundTrip rewrites the request for sidecar routing when it carries a
+// sentinel token. Requests without a sentinel token (e.g. pre-signed download
+// URLs) are passed through unmodified.
+//
+// Supports two auth patterns:
+//   - Standard OpenAPI: Authorization: Bearer <sentinel>
+//   - MCP protocol:     X-Lark-MCP-UAT/TAT: <sentinel>
+func (i *Interceptor) PreRoundTrip(req *http.Request) func(resp *http.Response, err error) {
+	identity, authHeader := detectSentinel(req)
+	if identity == "" {
+		return nil // not a sidecar-managed request, pass through
+	}
+
+	// 1. Buffer the body first, before mutating any request state. A partial
+	// read would sign a truncated body and cause a misleading HMAC mismatch
+	// on the sidecar side; bail out early and let the request fall through
+	// unmodified so the credential layer can surface an actionable error.
+	var bodyBytes []byte
+	if req.Body != nil {
+		var err error
+		bodyBytes, err = io.ReadAll(req.Body)
+		_ = req.Body.Close() // release original body (fd/pipe/etc.) after buffering
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "WARNING: sidecar interceptor failed to read request body: %v\n", err)
+			return nil
+		}
+		req.Body = io.NopCloser(bytes.NewReader(bodyBytes))
+		if req.GetBody != nil {
+			req.GetBody = func() (io.ReadCloser, error) {
+				return io.NopCloser(bytes.NewReader(bodyBytes)), nil
+			}
+		}
+	}
+
+	// 2. Save original target (scheme://host)
+	originalScheme := "https"
+	if req.URL.Scheme != "" {
+		originalScheme = req.URL.Scheme
+	}
+	originalHost := req.URL.Host
+	req.Header.Set(sidecar.HeaderProxyTarget, originalScheme+"://"+originalHost)
+
+	// 3. Set identity and tell sidecar which header to inject real token into
+	req.Header.Set(sidecar.HeaderProxyIdentity, identity)
+	req.Header.Set(sidecar.HeaderProxyAuthHeader, authHeader)
+
+	// 4. Strip placeholder auth header(s)
+	req.Header.Del("Authorization")
+	req.Header.Del(sidecar.HeaderMCPUAT)
+	req.Header.Del(sidecar.HeaderMCPTAT)
+
+	bodySHA := sidecar.BodySHA256(bodyBytes)
+	req.Header.Set(sidecar.HeaderBodySHA256, bodySHA)
+
+	pathAndQuery := req.URL.RequestURI()
+	ts := sidecar.Timestamp()
+	// Cover identity and authHeader in the signature so an on-path attacker
+	// within the replay window cannot flip the injected token's identity or
+	// redirect the token into a different header.
+	sig := sidecar.Sign(i.key, sidecar.CanonicalRequest{
+		Version:      sidecar.ProtocolV1,
+		Method:       req.Method,
+		Host:         originalHost,
+		PathAndQuery: pathAndQuery,
+		BodySHA256:   bodySHA,
+		Timestamp:    ts,
+		Identity:     identity,
+		AuthHeader:   authHeader,
+	})
+	req.Header.Set(sidecar.HeaderProxyVersion, sidecar.ProtocolV1)
+	req.Header.Set(sidecar.HeaderProxyTimestamp, ts)
+	req.Header.Set(sidecar.HeaderProxySignature, sig)
+
+	// 5. Rewrite URL to route through sidecar
+	req.URL.Scheme = "http"
+	req.URL.Host = i.sidecarHost
+
+	return nil // no post-hook needed
+}
+
+// detectSentinel checks both standard Authorization and MCP auth headers for
+// sentinel tokens. Returns the identity ("user"/"bot") and the header name
+// that carried the sentinel.
+//
+// Returns ("", "") when the request carries no sentinel token — typically
+// requests that require no auth (e.g. pre-signed download URLs where the
+// token is embedded in the URL query parameters).
+func detectSentinel(req *http.Request) (identity, authHeader string) {
+	// Check standard Authorization: Bearer <sentinel>
+	if auth := req.Header.Get("Authorization"); auth != "" {
+		token := strings.TrimPrefix(auth, "Bearer ")
+		switch token {
+		case sidecar.SentinelUAT:
+			return sidecar.IdentityUser, "Authorization"
+		case sidecar.SentinelTAT:
+			return sidecar.IdentityBot, "Authorization"
+		}
+	}
+	// Check MCP headers: X-Lark-MCP-UAT/TAT: <sentinel>
+	if v := req.Header.Get(sidecar.HeaderMCPUAT); v == sidecar.SentinelUAT {
+		return sidecar.IdentityUser, sidecar.HeaderMCPUAT
+	}
+	if v := req.Header.Get(sidecar.HeaderMCPTAT); v == sidecar.SentinelTAT {
+		return sidecar.IdentityBot, sidecar.HeaderMCPTAT
+	}
+	return "", ""
+}
+
+func init() {
+	proxyAddr := os.Getenv(envvars.CliAuthProxy)
+	if proxyAddr == "" {
+		return
+	}
+	if err := sidecar.ValidateProxyAddr(proxyAddr); err != nil {
+		fmt.Fprintf(os.Stderr, "WARNING: ignoring invalid %s: %v\n", envvars.CliAuthProxy, err)
+		return
+	}
+	transport.Register(&Provider{})
+}

extension/transport/sidecar/interceptor_test.go

@@ -0,0 +1,265 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build authsidecar
+
+package sidecar
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"net/http"
+	"testing"
+
+	"github.com/larksuite/cli/sidecar"
+)
+
+// failingBody is a ReadCloser that errors on Read and tracks Close calls.
+type failingBody struct {
+	err      error
+	closed   bool
+	readCall bool
+}
+
+func (b *failingBody) Read(p []byte) (int, error) {
+	b.readCall = true
+	return 0, b.err
+}
+
+func (b *failingBody) Close() error {
+	b.closed = true
+	return nil
+}
+
+func TestInterceptor_PreRoundTrip(t *testing.T) {
+	key := []byte("test-key-for-hmac-signing-32byte!")
+	interceptor := &Interceptor{key: key, sidecarHost: "127.0.0.1:16384"}
+
+	body := []byte(`{"msg":"hello"}`)
+	req, _ := http.NewRequest("POST", "https://open.feishu.cn/open-apis/im/v1/messages?receive_id_type=chat_id", io.NopCloser(bytes.NewReader(body)))
+	req.Header.Set("Authorization", "Bearer "+sidecar.SentinelUAT)
+	req.Header.Set("X-Cli-Source", "lark-cli")
+
+	post := interceptor.PreRoundTrip(req)
+
+	if post != nil {
+		t.Error("expected nil post hook")
+	}
+
+	// URL should be rewritten to sidecar
+	if req.URL.Scheme != "http" {
+		t.Errorf("scheme = %q, want %q", req.URL.Scheme, "http")
+	}
+	if req.URL.Host != "127.0.0.1:16384" {
+		t.Errorf("host = %q, want %q", req.URL.Host, "127.0.0.1:16384")
+	}
+
+	// Original target should be preserved
+	target := req.Header.Get(sidecar.HeaderProxyTarget)
+	if target != "https://open.feishu.cn" {
+		t.Errorf("target = %q, want %q", target, "https://open.feishu.cn")
+	}
+
+	// Identity should be user (from SentinelUAT)
+	if identity := req.Header.Get(sidecar.HeaderProxyIdentity); identity != sidecar.IdentityUser {
+		t.Errorf("identity = %q, want %q", identity, sidecar.IdentityUser)
+	}
+
+	// Authorization should be stripped
+	if auth := req.Header.Get("Authorization"); auth != "" {
+		t.Errorf("Authorization header should be stripped, got %q", auth)
+	}
+
+	// HMAC headers should be set
+	if sig := req.Header.Get(sidecar.HeaderProxySignature); sig == "" {
+		t.Error("signature header should be set")
+	}
+	if ts := req.Header.Get(sidecar.HeaderProxyTimestamp); ts == "" {
+		t.Error("timestamp header should be set")
+	}
+	if sha := req.Header.Get(sidecar.HeaderBodySHA256); sha == "" {
+		t.Error("body SHA256 header should be set")
+	}
+	if v := req.Header.Get(sidecar.HeaderProxyVersion); v != sidecar.ProtocolV1 {
+		t.Errorf("version header = %q, want %q", v, sidecar.ProtocolV1)
+	}
+
+	// Non-proxy headers should be preserved
+	if src := req.Header.Get("X-Cli-Source"); src != "lark-cli" {
+		t.Errorf("X-Cli-Source should be preserved, got %q", src)
+	}
+
+	// Body should still be readable
+	readBody, _ := io.ReadAll(req.Body)
+	if !bytes.Equal(readBody, body) {
+		t.Errorf("body should be preserved after PreRoundTrip")
+	}
+}
+
+func TestInterceptor_BotIdentity(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	req, _ := http.NewRequest("GET", "https://open.feishu.cn/open-apis/calendar/v4/events", nil)
+	req.Header.Set("Authorization", "Bearer "+sidecar.SentinelTAT)
+
+	interceptor.PreRoundTrip(req)
+
+	if identity := req.Header.Get(sidecar.HeaderProxyIdentity); identity != sidecar.IdentityBot {
+		t.Errorf("identity = %q, want %q", identity, sidecar.IdentityBot)
+	}
+}
+
+func TestInterceptor_NonSentinelToken_PassThrough(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	origURL := "https://some-cdn.example.com/presigned-download?token=abc"
+	req, _ := http.NewRequest("GET", origURL, nil)
+	req.Header.Set("Authorization", "Bearer some-real-token")
+
+	post := interceptor.PreRoundTrip(req)
+
+	// Should NOT be rewritten — no sentinel token
+	if post != nil {
+		t.Error("expected nil post hook for pass-through")
+	}
+	if req.URL.String() != origURL {
+		t.Errorf("URL should be unchanged, got %q", req.URL.String())
+	}
+	if req.Header.Get(sidecar.HeaderProxyTarget) != "" {
+		t.Error("proxy target header should not be set for pass-through")
+	}
+	if req.Header.Get("Authorization") != "Bearer some-real-token" {
+		t.Error("Authorization should be preserved for pass-through")
+	}
+}
+
+func TestInterceptor_NoAuth_PassThrough(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	origURL := "https://cdn.feishu.cn/download/file"
+	req, _ := http.NewRequest("GET", origURL, nil)
+
+	interceptor.PreRoundTrip(req)
+
+	// No Authorization header at all — should pass through
+	if req.URL.String() != origURL {
+		t.Errorf("URL should be unchanged for no-auth request, got %q", req.URL.String())
+	}
+}
+
+func TestInterceptor_MCP_UAT(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	req, _ := http.NewRequest("POST", "https://mcp.feishu.cn/mcp/v1/tools/call", bytes.NewReader([]byte(`{"jsonrpc":"2.0"}`)))
+	req.Header.Set(sidecar.HeaderMCPUAT, sidecar.SentinelUAT)
+
+	interceptor.PreRoundTrip(req)
+
+	// Should be intercepted and rewritten
+	if req.URL.Host != "127.0.0.1:16384" {
+		t.Errorf("host = %q, want sidecar host", req.URL.Host)
+	}
+	if identity := req.Header.Get(sidecar.HeaderProxyIdentity); identity != sidecar.IdentityUser {
+		t.Errorf("identity = %q, want %q", identity, sidecar.IdentityUser)
+	}
+	if ah := req.Header.Get(sidecar.HeaderProxyAuthHeader); ah != sidecar.HeaderMCPUAT {
+		t.Errorf("auth header = %q, want %q", ah, sidecar.HeaderMCPUAT)
+	}
+	// MCP sentinel should be stripped
+	if v := req.Header.Get(sidecar.HeaderMCPUAT); v != "" {
+		t.Errorf("MCP-UAT should be stripped, got %q", v)
+	}
+}
+
+func TestInterceptor_MCP_TAT(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	req, _ := http.NewRequest("POST", "https://mcp.feishu.cn/mcp/v1/tools/call", bytes.NewReader([]byte(`{}`)))
+	req.Header.Set(sidecar.HeaderMCPTAT, sidecar.SentinelTAT)
+
+	interceptor.PreRoundTrip(req)
+
+	if identity := req.Header.Get(sidecar.HeaderProxyIdentity); identity != sidecar.IdentityBot {
+		t.Errorf("identity = %q, want %q", identity, sidecar.IdentityBot)
+	}
+	if ah := req.Header.Get(sidecar.HeaderProxyAuthHeader); ah != sidecar.HeaderMCPTAT {
+		t.Errorf("auth header = %q, want %q", ah, sidecar.HeaderMCPTAT)
+	}
+}
+
+func TestInterceptor_StandardAuth_SetsAuthorizationHeader(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	req, _ := http.NewRequest("GET", "https://open.feishu.cn/open-apis/test", nil)
+	req.Header.Set("Authorization", "Bearer "+sidecar.SentinelUAT)
+
+	interceptor.PreRoundTrip(req)
+
+	if ah := req.Header.Get(sidecar.HeaderProxyAuthHeader); ah != "Authorization" {
+		t.Errorf("auth header = %q, want %q", ah, "Authorization")
+	}
+}
+
+// TestInterceptor_BodyReadError verifies that when io.ReadAll on the request
+// body fails partway, PreRoundTrip skips the rewrite entirely rather than
+// signing a truncated body (which would produce a misleading HMAC mismatch on
+// the sidecar side) and releases the original body.
+func TestInterceptor_BodyReadError(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	const origURL = "https://open.feishu.cn/open-apis/im/v1/messages"
+	body := &failingBody{err: errors.New("disk gremlin")}
+
+	req, _ := http.NewRequest("POST", origURL, body)
+	req.Header.Set("Authorization", "Bearer "+sidecar.SentinelUAT)
+
+	post := interceptor.PreRoundTrip(req)
+
+	if post != nil {
+		t.Error("expected nil post hook on body read failure")
+	}
+
+	// Original body must be closed to avoid leaking fd/pipe-like resources.
+	if !body.readCall {
+		t.Error("expected ReadAll to have attempted reading from the body")
+	}
+	if !body.closed {
+		t.Error("expected original body to be Close()'d after read failure")
+	}
+
+	// URL must NOT be rewritten — request should fall through to the next
+	// layer (credential) which can surface a meaningful error.
+	if req.URL.String() != origURL {
+		t.Errorf("URL should be unchanged on read failure, got %q", req.URL.String())
+	}
+
+	// No proxy/HMAC headers should leak onto the request.
+	for _, h := range []string{
+		sidecar.HeaderProxyVersion,
+		sidecar.HeaderProxyTarget,
+		sidecar.HeaderProxySignature,
+		sidecar.HeaderProxyTimestamp,
+		sidecar.HeaderBodySHA256,
+		sidecar.HeaderProxyIdentity,
+		sidecar.HeaderProxyAuthHeader,
+	} {
+		if v := req.Header.Get(h); v != "" {
+			t.Errorf("%s should not be set on read failure, got %q", h, v)
+		}
+	}
+}
+
+func TestInterceptor_EmptyBody(t *testing.T) {
+	interceptor := &Interceptor{key: []byte("key"), sidecarHost: "127.0.0.1:16384"}
+
+	req, _ := http.NewRequest("GET", "https://open.feishu.cn/path", nil)
+	req.Header.Set("Authorization", "Bearer "+sidecar.SentinelTAT)
+	interceptor.PreRoundTrip(req)
+
+	sha := req.Header.Get(sidecar.HeaderBodySHA256)
+	expectedEmpty := sidecar.BodySHA256(nil)
+	if sha != expectedEmpty {
+		t.Errorf("body SHA256 = %q, want empty-string SHA256 %q", sha, expectedEmpty)
+	}
+}

extension/transport/types.go

@@ -27,6 +27,31 @@ type Provider interface {
 //
 // The returned function (if non-nil) is called after the built-in chain
 // completes. Use it for logging, ending trace spans, or recording metrics.
+//
+// Body note: the middleware Clones the caller's request before invoking the
+// interceptor, which copies headers/URL/etc. but shares the underlying
+// io.ReadCloser. Extensions that read req.Body are responsible for restoring
+// a replayable body (e.g. via req.GetBody) before returning, otherwise the
+// built-in chain will see an exhausted stream.
 type Interceptor interface {
 	PreRoundTrip(req *http.Request) func(resp *http.Response, err error)
 }
+
+// AbortableInterceptor is an optional extension of Interceptor that lets an
+// extension reject a request before the built-in chain runs. Extensions that
+// implement this interface are detected by the built-in middleware via a
+// type assertion; both methods must be present, but when an extension
+// implements PreRoundTripE the middleware will NOT call PreRoundTrip.
+//
+// Returning a non-nil error from PreRoundTripE aborts the request: the
+// built-in chain is not executed and the middleware returns an *AbortError
+// wrapping the reason. The returned post function (if non-nil) is still
+// invoked with (nil, reason) so that extensions can unwind any state they
+// created in the pre hook (spans, metrics, audit records).
+//
+// Extensions that only care about the abortable variant can provide a no-op
+// PreRoundTrip method alongside PreRoundTripE to satisfy Interceptor.
+type AbortableInterceptor interface {
+	Interceptor
+	PreRoundTripE(req *http.Request) (post func(resp *http.Response, err error), err error)
+}

internal/auth/device_flow.go

@@ -200,7 +200,7 @@ func PollDeviceToken(ctx context.Context, httpClient *http.Client, appId, appSec
 		errStr := getStr(data, "error")
 
 		if errStr == "" && getStr(data, "access_token") != "" {
-			fmt.Fprintf(errOut, "[lark-cli] device-flow: token obtained successfully\n")
+			fmt.Fprintf(errOut, "[lark-cli] device-flow: token response received\n")
 			refreshToken := getStr(data, "refresh_token")
 			tokenExpiresIn := getInt(data, "expires_in", 7200)
 			refreshExpiresIn := getInt(data, "refresh_token_expires_in", 604800)

internal/cmdutil/completion.go

@@ -0,0 +1,37 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"sync/atomic"
+
+	"github.com/spf13/cobra"
+)
+
+// Cobra keeps completion callbacks in a package-global map keyed by
+// *pflag.Flag with no removal path, so registrations made for a *cobra.Command
+// outlive the command itself. Skip registration when the current invocation
+// will not serve a completion request.
+var flagCompletionsDisabled atomic.Bool
+
+// SetFlagCompletionsDisabled switches RegisterFlagCompletion between
+// registering and no-op. Typically set once at process start.
+func SetFlagCompletionsDisabled(disabled bool) {
+	flagCompletionsDisabled.Store(disabled)
+}
+
+// FlagCompletionsDisabled reports the current switch state.
+func FlagCompletionsDisabled() bool {
+	return flagCompletionsDisabled.Load()
+}
+
+// RegisterFlagCompletion wraps (*cobra.Command).RegisterFlagCompletionFunc
+// and honors the package switch. The underlying error is swallowed to match
+// the `_ = cmd.RegisterFlagCompletionFunc(...)` style already used here.
+func RegisterFlagCompletion(cmd *cobra.Command, flagName string, fn cobra.CompletionFunc) {
+	if flagCompletionsDisabled.Load() {
+		return
+	}
+	_ = cmd.RegisterFlagCompletionFunc(flagName, fn)
+}

internal/cmdutil/completion_test.go

@@ -0,0 +1,78 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"runtime"
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/spf13/cobra"
+)
+
+func TestSetFlagCompletionsDisabled_RoundTrip(t *testing.T) {
+	t.Cleanup(func() { SetFlagCompletionsDisabled(false) })
+
+	if FlagCompletionsDisabled() {
+		t.Fatal("expected default false")
+	}
+	SetFlagCompletionsDisabled(true)
+	if !FlagCompletionsDisabled() {
+		t.Fatal("expected true after Set(true)")
+	}
+	SetFlagCompletionsDisabled(false)
+	if FlagCompletionsDisabled() {
+		t.Fatal("expected false after Set(false)")
+	}
+}
+
+// When disabled, a *cobra.Command must be collectable after the caller drops
+// its reference — i.e. the wrapper did not touch cobra's global map.
+func TestRegisterFlagCompletion_Disabled_DoesNotRetainCommand(t *testing.T) {
+	SetFlagCompletionsDisabled(true)
+	t.Cleanup(func() { SetFlagCompletionsDisabled(false) })
+
+	const N = 5
+	var collected atomic.Int32
+	func() {
+		for range N {
+			cmd := &cobra.Command{Use: "x"}
+			cmd.Flags().String("foo", "", "")
+			RegisterFlagCompletion(cmd, "foo", func(_ *cobra.Command, _ []string, _ string) ([]cobra.Completion, cobra.ShellCompDirective) {
+				return nil, cobra.ShellCompDirectiveNoFileComp
+			})
+			runtime.SetFinalizer(cmd, func(_ *cobra.Command) { collected.Add(1) })
+		}
+	}()
+	// Finalizers run on a dedicated goroutine after GC; loop to give it time.
+	for range 30 {
+		runtime.GC()
+		time.Sleep(20 * time.Millisecond)
+	}
+	if got := collected.Load(); int(got) != N {
+		t.Fatalf("expected %d *cobra.Command finalizers to fire when completions disabled, got %d", N, got)
+	}
+}
+
+// When enabled, the registered completion must be reachable via cobra.
+func TestRegisterFlagCompletion_Enabled_DoesRegister(t *testing.T) {
+	SetFlagCompletionsDisabled(false)
+
+	cmd := &cobra.Command{Use: "x"}
+	cmd.Flags().String("foo", "", "")
+	want := []cobra.Completion{"a", "b"}
+	RegisterFlagCompletion(cmd, "foo", func(_ *cobra.Command, _ []string, _ string) ([]cobra.Completion, cobra.ShellCompDirective) {
+		return want, cobra.ShellCompDirectiveNoFileComp
+	})
+
+	fn, ok := cmd.GetFlagCompletionFunc("foo")
+	if !ok {
+		t.Fatal("expected completion func to be registered")
+	}
+	got, _ := fn(cmd, nil, "")
+	if len(got) != 2 || got[0] != "a" || got[1] != "b" {
+		t.Fatalf("unexpected completion result: %v", got)
+	}
+}

internal/cmdutil/dryrun.go

@@ -215,6 +215,51 @@ func encodeParams(params map[string]interface{}) string {
 	return vals.Encode()
 }
 
+// PrintDryRunWithFile outputs a dry-run summary for file upload requests.
+// Instead of serializing the Formdata body, it shows file metadata.
+func PrintDryRunWithFile(w io.Writer, request client.RawApiRequest, config *core.CliConfig, format, fileField, filePath string, formFields any) error {
+	dr := NewDryRunAPI()
+	switch request.Method {
+	case "POST":
+		dr.POST(request.URL)
+	case "PUT":
+		dr.PUT(request.URL)
+	case "PATCH":
+		dr.PATCH(request.URL)
+	case "DELETE":
+		dr.DELETE(request.URL)
+	default:
+		dr.GET(request.URL)
+	}
+	if len(request.Params) > 0 {
+		dr.Params(request.Params)
+	}
+	filePathDisplay := filePath
+	if filePathDisplay == "" {
+		filePathDisplay = "<stdin>"
+	}
+	fileInfo := map[string]any{
+		"file": map[string]string{"field": fileField, "path": filePathDisplay},
+	}
+	if formFields != nil {
+		fileInfo["form_fields"] = formFields
+	}
+	fileInfo["options"] = []string{"WithFileUpload"}
+	dr.Body(fileInfo)
+	dr.Set("as", string(request.As))
+	dr.Set("appId", config.AppID)
+	if config.UserOpenId != "" {
+		dr.Set("userOpenId", config.UserOpenId)
+	}
+	fmt.Fprintln(w, "=== Dry Run ===")
+	if format == "pretty" {
+		fmt.Fprint(w, dr.Format())
+	} else {
+		output.PrintJson(w, dr)
+	}
+	return nil
+}
+
 // PrintDryRun outputs a standardised dry-run summary using DryRunAPI.
 // When format is "pretty", outputs human-readable text; otherwise JSON.
 func PrintDryRun(w io.Writer, request client.RawApiRequest, config *core.CliConfig, format string) error {

internal/cmdutil/factory_default.go

@@ -8,13 +8,11 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"os"
 	"sync"
 	"time"
 
 	lark "github.com/larksuite/oapi-sdk-go/v3"
 	larkcore "github.com/larksuite/oapi-sdk-go/v3/core"
-	"golang.org/x/term"
 
 	extcred "github.com/larksuite/cli/extension/credential"
 	"github.com/larksuite/cli/extension/fileio"
@@ -34,27 +32,24 @@ import (
 //	Phase 2: Credential (sole data source for account info)
 //	Phase 3: Config derived from Credential
 //	Phase 4: LarkClient derived from Credential
-func NewDefault(inv InvocationContext) *Factory {
+func NewDefault(streams *IOStreams, inv InvocationContext) *Factory {
+	streams = normalizeStreams(streams)
 	f := &Factory{
 		Keychain:   keychain.Default(),
 		Invocation: inv,
-	}
-	f.IOStreams = &IOStreams{
-		In:         os.Stdin,
-		Out:        os.Stdout,
-		ErrOut:     os.Stderr,
-		IsTerminal: term.IsTerminal(int(os.Stdin.Fd())),
+		IOStreams:  streams,
 	}
 
 	// Phase 0: FileIO provider (no dependency)
 	f.FileIOProvider = fileio.GetProvider()
 
 	// Phase 1: HttpClient (no credential dependency)
-	f.HttpClient = cachedHttpClientFunc()
+	f.HttpClient = cachedHttpClientFunc(f)
 
 	// Phase 2: Credential (sole data source)
+	// Keychain is read via closure so callers can replace f.Keychain after construction.
 	f.Credential = buildCredentialProvider(credentialDeps{
-		Keychain:   f.Keychain,
+		Keychain:   func() keychain.KeychainAccess { return f.Keychain },
 		Profile:    inv.Profile,
 		HttpClient: f.HttpClient,
 		ErrOut:     f.IOStreams.ErrOut,
@@ -93,11 +88,11 @@ func safeRedirectPolicy(req *http.Request, via []*http.Request) error {
 	return nil
 }
 
-func cachedHttpClientFunc() func() (*http.Client, error) {
+func cachedHttpClientFunc(f *Factory) func() (*http.Client, error) {
 	return sync.OnceValues(func() (*http.Client, error) {
-		util.WarnIfProxied(os.Stderr)
+		util.WarnIfProxied(f.IOStreams.ErrOut)
 
-		var transport http.RoundTripper = util.NewBaseTransport()
+		var transport http.RoundTripper = util.SharedTransport()
 		transport = &RetryTransport{Base: transport}
 		transport = &SecurityHeaderTransport{Base: transport}
 		transport = &auth.SecurityPolicyTransport{Base: transport} // Add our global response interceptor
@@ -122,7 +117,7 @@ func cachedLarkClientFunc(f *Factory) func() (*lark.Client, error) {
 			lark.WithLogLevel(larkcore.LogLevelError),
 			lark.WithHeaders(BaseSecurityHeaders()),
 		}
-		util.WarnIfProxied(os.Stderr)
+		util.WarnIfProxied(f.IOStreams.ErrOut)
 		opts = append(opts, lark.WithHttpClient(&http.Client{
 			Transport:     buildSDKTransport(),
 			CheckRedirect: safeRedirectPolicy,
@@ -134,15 +129,16 @@ func cachedLarkClientFunc(f *Factory) func() (*lark.Client, error) {
 }
 
 func buildSDKTransport() http.RoundTripper {
-	var sdkTransport http.RoundTripper = util.NewBaseTransport()
+	var sdkTransport http.RoundTripper = util.SharedTransport()
 	sdkTransport = &RetryTransport{Base: sdkTransport}
 	sdkTransport = &UserAgentTransport{Base: sdkTransport}
+	sdkTransport = &BuildHeaderTransport{Base: sdkTransport}
 	sdkTransport = &auth.SecurityPolicyTransport{Base: sdkTransport}
 	return wrapWithExtension(sdkTransport)
 }
 
 type credentialDeps struct {
-	Keychain   keychain.KeychainAccess
+	Keychain   func() keychain.KeychainAccess
 	Profile    string
 	HttpClient func() (*http.Client, error)
 	ErrOut     io.Writer

internal/cmdutil/factory_default_test.go

@@ -6,14 +6,10 @@ package cmdutil
 import (
 	"context"
 	"errors"
-	"net/http"
-	"net/http/httptest"
 	"testing"
 
 	_ "github.com/larksuite/cli/extension/credential/env"
 	"github.com/larksuite/cli/extension/fileio"
-	exttransport "github.com/larksuite/cli/extension/transport"
-	internalauth "github.com/larksuite/cli/internal/auth"
 	"github.com/larksuite/cli/internal/core"
 	"github.com/larksuite/cli/internal/credential"
 	"github.com/larksuite/cli/internal/envvars"
@@ -63,7 +59,7 @@ func TestNewDefault_InvocationProfileUsedByStrictModeAndConfig(t *testing.T) {
 		t.Fatalf("SaveMultiAppConfig() error = %v", err)
 	}
 
-	f := NewDefault(InvocationContext{Profile: "target"})
+	f := NewDefault(nil, InvocationContext{Profile: "target"})
 	if got := f.ResolveStrictMode(context.Background()); got != core.StrictModeBot {
 		t.Fatalf("ResolveStrictMode() = %q, want %q", got, core.StrictModeBot)
 	}
@@ -103,7 +99,7 @@ func TestNewDefault_InvocationProfileMissingSticksAcrossEarlyStrictMode(t *testi
 		t.Fatalf("SaveMultiAppConfig() error = %v", err)
 	}
 
-	f := NewDefault(InvocationContext{Profile: "missing"})
+	f := NewDefault(nil, InvocationContext{Profile: "missing"})
 	if got := f.ResolveStrictMode(context.Background()); got != core.StrictModeOff {
 		t.Fatalf("ResolveStrictMode() = %q, want %q", got, core.StrictModeOff)
 	}
@@ -120,22 +116,6 @@ func TestNewDefault_InvocationProfileMissingSticksAcrossEarlyStrictMode(t *testi
 	}
 }
 
-func TestBuildSDKTransport_IncludesRetryTransport(t *testing.T) {
-	transport := buildSDKTransport()
-
-	sec, ok := transport.(*internalauth.SecurityPolicyTransport)
-	if !ok {
-		t.Fatalf("outer transport type = %T, want *auth.SecurityPolicyTransport", transport)
-	}
-	ua, ok := sec.Base.(*UserAgentTransport)
-	if !ok {
-		t.Fatalf("middle transport type = %T, want *UserAgentTransport", sec.Base)
-	}
-	if _, ok := ua.Base.(*RetryTransport); !ok {
-		t.Fatalf("inner transport type = %T, want *RetryTransport", ua.Base)
-	}
-}
-
 func TestNewDefault_ResolveAs_UsesDefaultAsFromEnvAccount(t *testing.T) {
 	t.Setenv(envvars.CliAppID, "env-app")
 	t.Setenv(envvars.CliAppSecret, "env-secret")
@@ -144,7 +124,7 @@ func TestNewDefault_ResolveAs_UsesDefaultAsFromEnvAccount(t *testing.T) {
 	t.Setenv(envvars.CliTenantAccessToken, "")
 	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
 
-	f := NewDefault(InvocationContext{})
+	f := NewDefault(nil, InvocationContext{})
 	cmd := newCmdWithAsFlag("auto", false)
 
 	got := f.ResolveAs(context.Background(), cmd, "auto")
@@ -164,7 +144,7 @@ func TestNewDefault_ConfigReturnsCliConfigCopyOfCredentialAccount(t *testing.T)
 	t.Setenv(envvars.CliTenantAccessToken, "")
 	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
 
-	f := NewDefault(InvocationContext{})
+	f := NewDefault(nil, InvocationContext{})
 
 	acct, err := f.Credential.ResolveAccount(context.Background())
 	if err != nil {
@@ -189,7 +169,7 @@ func TestNewDefault_ConfigUsesRuntimePlaceholderForTokenOnlyEnvAccount(t *testin
 	t.Setenv(envvars.CliTenantAccessToken, "")
 	t.Setenv("LARKSUITE_CLI_CONFIG_DIR", t.TempDir())
 
-	f := NewDefault(InvocationContext{})
+	f := NewDefault(nil, InvocationContext{})
 
 	acct, err := f.Credential.ResolveAccount(context.Background())
 	if err != nil {
@@ -217,7 +197,7 @@ func TestNewDefault_FileIOProviderDoesNotResolveDuringInitialization(t *testing.
 	fileio.Register(provider)
 	t.Cleanup(func() { fileio.Register(prev) })
 
-	f := NewDefault(InvocationContext{})
+	f := NewDefault(nil, InvocationContext{})
 	if f.FileIOProvider != provider {
 		t.Fatalf("NewDefault() provider = %T, want %T", f.FileIOProvider, provider)
 	}
@@ -232,170 +212,3 @@ func TestNewDefault_FileIOProviderDoesNotResolveDuringInitialization(t *testing.
 		t.Fatalf("ResolveFileIO() calls after explicit resolve = %d, want 1", provider.resolveCalls)
 	}
 }
-
-type stubTransportProvider struct {
-	interceptor exttransport.Interceptor
-}
-
-func (s *stubTransportProvider) Name() string { return "stub" }
-func (s *stubTransportProvider) ResolveInterceptor(context.Context) exttransport.Interceptor {
-	if s.interceptor != nil {
-		return s.interceptor
-	}
-	return &stubTransportImpl{}
-}
-
-type stubTransportImpl struct{}
-
-func (s *stubTransportImpl) PreRoundTrip(req *http.Request) func(*http.Response, error) {
-	return nil
-}
-
-// headerCapturingInterceptor sets custom headers in PreRoundTrip and records
-// whether PostRoundTrip was called, to verify execution order.
-type headerCapturingInterceptor struct {
-	preCalled  bool
-	postCalled bool
-}
-
-func (h *headerCapturingInterceptor) PreRoundTrip(req *http.Request) func(*http.Response, error) {
-	h.preCalled = true
-	// Set a custom header that should survive (no built-in override)
-	req.Header.Set("X-Custom-Trace", "ext-trace-123")
-	// Try to override a security header — should be overwritten by SecurityHeaderTransport
-	req.Header.Set(HeaderSource, "ext-tampered")
-	return func(resp *http.Response, err error) {
-		h.postCalled = true
-	}
-}
-
-func TestExtensionInterceptor_ExecutionOrder(t *testing.T) {
-	var receivedHeaders http.Header
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		receivedHeaders = r.Header.Clone()
-		w.WriteHeader(http.StatusOK)
-	}))
-	defer srv.Close()
-
-	ic := &headerCapturingInterceptor{}
-	exttransport.Register(&stubTransportProvider{interceptor: ic})
-	t.Cleanup(func() { exttransport.Register(nil) })
-
-	// Use HTTP transport chain (has SecurityHeaderTransport)
-	var base http.RoundTripper = http.DefaultTransport
-	base = &RetryTransport{Base: base}
-	base = &SecurityHeaderTransport{Base: base}
-	transport := wrapWithExtension(base)
-	client := &http.Client{Transport: transport}
-
-	req, _ := http.NewRequest("GET", srv.URL, nil)
-	resp, err := client.Do(req)
-	if err != nil {
-		t.Fatalf("request failed: %v", err)
-	}
-	resp.Body.Close()
-
-	// PreRoundTrip was called
-	if !ic.preCalled {
-		t.Fatal("PreRoundTrip was not called")
-	}
-	// PostRoundTrip (closure) was called
-	if !ic.postCalled {
-		t.Fatal("PostRoundTrip closure was not called")
-	}
-	// Custom header set by extension survives (no built-in override)
-	if got := receivedHeaders.Get("X-Custom-Trace"); got != "ext-trace-123" {
-		t.Fatalf("X-Custom-Trace = %q, want %q", got, "ext-trace-123")
-	}
-	// Security header overridden by extension is restored by SecurityHeaderTransport
-	if got := receivedHeaders.Get(HeaderSource); got != SourceValue {
-		t.Fatalf("%s = %q, want %q (built-in should override extension)", HeaderSource, got, SourceValue)
-	}
-}
-
-func TestExtensionInterceptor_ContextTamperPrevented(t *testing.T) {
-	type ctxKeyType string
-	const testKey ctxKeyType = "original"
-
-	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-	}))
-	defer srv.Close()
-
-	var ctxValue any
-
-	// Use a custom transport that captures the context value seen by the built-in chain
-	capturer := roundTripFunc(func(req *http.Request) (*http.Response, error) {
-		ctxValue = req.Context().Value(testKey)
-		return http.DefaultTransport.RoundTrip(req)
-	})
-
-	// Interceptor that tries to tamper with context
-	tamperIC := interceptorFunc(func(req *http.Request) func(*http.Response, error) {
-		// Try to replace context with a new one
-		*req = *req.WithContext(context.WithValue(req.Context(), testKey, "tampered"))
-		return nil
-	})
-
-	mid := &extensionMiddleware{Base: capturer, Ext: tamperIC}
-
-	origCtx := context.WithValue(context.Background(), testKey, "original")
-	req, _ := http.NewRequestWithContext(origCtx, "GET", srv.URL, nil)
-	resp, err := mid.RoundTrip(req)
-	if err != nil {
-		t.Fatalf("request failed: %v", err)
-	}
-	resp.Body.Close()
-
-	// Built-in chain should see original context, not tampered
-	if ctxValue != "original" {
-		t.Fatalf("built-in chain saw context value %q, want %q", ctxValue, "original")
-	}
-}
-
-// interceptorFunc adapts a function to exttransport.Interceptor.
-type interceptorFunc func(*http.Request) func(*http.Response, error)
-
-func (f interceptorFunc) PreRoundTrip(req *http.Request) func(*http.Response, error) { return f(req) }
-
-func TestBuildSDKTransport_WithExtension(t *testing.T) {
-	exttransport.Register(&stubTransportProvider{})
-	t.Cleanup(func() { exttransport.Register(nil) })
-
-	transport := buildSDKTransport()
-
-	// Chain: extensionMiddleware → SecurityPolicy → UserAgent → Retry → Base
-	mid, ok := transport.(*extensionMiddleware)
-	if !ok {
-		t.Fatalf("outer transport type = %T, want *extensionMiddleware", transport)
-	}
-	sec, ok := mid.Base.(*internalauth.SecurityPolicyTransport)
-	if !ok {
-		t.Fatalf("transport type = %T, want *auth.SecurityPolicyTransport", mid.Base)
-	}
-	ua, ok := sec.Base.(*UserAgentTransport)
-	if !ok {
-		t.Fatalf("transport type = %T, want *UserAgentTransport", sec.Base)
-	}
-	if _, ok := ua.Base.(*RetryTransport); !ok {
-		t.Fatalf("innermost transport type = %T, want *RetryTransport", ua.Base)
-	}
-}
-
-func TestBuildSDKTransport_WithoutExtension(t *testing.T) {
-	exttransport.Register(nil)
-
-	transport := buildSDKTransport()
-
-	sec, ok := transport.(*internalauth.SecurityPolicyTransport)
-	if !ok {
-		t.Fatalf("outer transport type = %T, want *auth.SecurityPolicyTransport", transport)
-	}
-	ua, ok := sec.Base.(*UserAgentTransport)
-	if !ok {
-		t.Fatalf("middle transport type = %T, want *UserAgentTransport", sec.Base)
-	}
-	if _, ok := ua.Base.(*RetryTransport); !ok {
-		t.Fatalf("inner transport type = %T, want *RetryTransport", ua.Base)
-	}
-}

internal/cmdutil/factory_http_test.go

@@ -4,11 +4,12 @@
 package cmdutil
 
 import (
+	"io"
 	"testing"
 )
 
 func TestCachedHttpClientFunc_ReturnsSameInstance(t *testing.T) {
-	fn := cachedHttpClientFunc()
+	fn := cachedHttpClientFunc(&Factory{IOStreams: &IOStreams{ErrOut: io.Discard}})
 
 	c1, err := fn()
 	if err != nil {
@@ -28,7 +29,7 @@ func TestCachedHttpClientFunc_ReturnsSameInstance(t *testing.T) {
 }
 
 func TestCachedHttpClientFunc_HasTimeout(t *testing.T) {
-	fn := cachedHttpClientFunc()
+	fn := cachedHttpClientFunc(&Factory{IOStreams: &IOStreams{ErrOut: io.Discard}})
 	c, _ := fn()
 	if c.Timeout == 0 {
 		t.Error("expected non-zero timeout")
@@ -36,7 +37,7 @@ func TestCachedHttpClientFunc_HasTimeout(t *testing.T) {
 }
 
 func TestCachedHttpClientFunc_HasRedirectPolicy(t *testing.T) {
-	fn := cachedHttpClientFunc()
+	fn := cachedHttpClientFunc(&Factory{IOStreams: &IOStreams{ErrOut: io.Discard}})
 	c, _ := fn()
 	if c.CheckRedirect == nil {
 		t.Error("expected CheckRedirect to be set (safeRedirectPolicy)")

internal/cmdutil/fileupload.go

@@ -0,0 +1,144 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"strconv"
+	"strings"
+
+	"github.com/larksuite/cli/extension/fileio"
+	"github.com/larksuite/cli/internal/output"
+	"github.com/larksuite/cli/internal/registry"
+	larkcore "github.com/larksuite/oapi-sdk-go/v3/core"
+)
+
+// DetectFileFields returns field names with type "file" in the method's requestBody.
+func DetectFileFields(method map[string]interface{}) []string {
+	rb, _ := method["requestBody"].(map[string]interface{})
+	var fields []string
+	for name, field := range rb {
+		f, _ := field.(map[string]interface{})
+		if registry.GetStrFromMap(f, "type") == "file" {
+			fields = append(fields, name)
+		}
+	}
+	return fields
+}
+
+// ParseFileFlag parses a --file flag value into its components.
+// The format is either "path" or "field=path". When no explicit "field="
+// prefix is present, defaultField is used as the field name.
+// A path of "-" indicates stdin; in that case filePath is empty and isStdin is true.
+func ParseFileFlag(raw, defaultField string) (fieldName, filePath string, isStdin bool) {
+	if idx := strings.IndexByte(raw, '='); idx > 0 {
+		fieldName = raw[:idx]
+		filePath = raw[idx+1:]
+	} else {
+		fieldName = defaultField
+		filePath = raw
+	}
+	if filePath == "-" {
+		return fieldName, "", true
+	}
+	return fieldName, filePath, false
+}
+
+// ValidateFileFlag checks mutual exclusion rules for the --file flag.
+// Returns nil if file is empty (flag not provided).
+func ValidateFileFlag(file, params, data, outputPath string, pageAll bool, httpMethod string) error {
+	if file == "" {
+		return nil
+	}
+
+	_, filePath, isStdin := ParseFileFlag(file, "file")
+	if !isStdin && filePath == "" {
+		return output.ErrValidation("--file: empty file path")
+	}
+
+	if outputPath != "" {
+		return output.ErrValidation("--file and --output are mutually exclusive")
+	}
+	if pageAll {
+		return output.ErrValidation("--file and --page-all are mutually exclusive")
+	}
+	if isStdin && data == "-" {
+		return output.ErrValidation("--file and --data cannot both read from stdin")
+	}
+	if isStdin && params == "-" {
+		return output.ErrValidation("--file and --params cannot both read from stdin")
+	}
+
+	switch httpMethod {
+	case "POST", "PUT", "PATCH", "DELETE":
+	default:
+		return output.ErrValidation("--file requires POST, PUT, PATCH, or DELETE method")
+	}
+
+	return nil
+}
+
+// FileUploadMeta holds file upload metadata for dry-run display.
+// Returned by request builders when dry-run mode skips actual file reading.
+type FileUploadMeta struct {
+	FieldName  string
+	FilePath   string
+	FormFields any
+}
+
+// BuildFormdata constructs a multipart form data payload for file upload.
+// If isStdin is true, the file content is read from stdin.
+// Top-level keys from dataJSON are added as text form fields.
+func BuildFormdata(fileIO fileio.FileIO, fieldName, filePath string, isStdin bool, stdin io.Reader, dataJSON any) (*larkcore.Formdata, error) {
+	fd := larkcore.NewFormdata()
+
+	if isStdin {
+		if stdin == nil {
+			return nil, output.ErrValidation("--file: stdin is not available")
+		}
+		data, err := io.ReadAll(stdin)
+		if err != nil {
+			return nil, output.ErrValidation("--file: failed to read stdin: %v", err)
+		}
+		if len(data) == 0 {
+			return nil, output.ErrValidation("--file: stdin is empty")
+		}
+		fd.AddFile(fieldName, bytes.NewReader(data))
+	} else {
+		f, err := fileIO.Open(filePath)
+		if err != nil {
+			return nil, output.ErrValidation("cannot open file: %s", filePath)
+		}
+		defer f.Close()
+		data, err := io.ReadAll(f)
+		if err != nil {
+			return nil, output.ErrValidation("--file: failed to read %s: %v", filePath, err)
+		}
+		fd.AddFile(fieldName, bytes.NewReader(data))
+	}
+
+	// Add top-level JSON keys as text form fields.
+	if m, ok := dataJSON.(map[string]any); ok {
+		for k, v := range m {
+			fd.AddField(k, formatFormFieldValue(v))
+		}
+	}
+
+	return fd, nil
+}
+
+// formatFormFieldValue renders a JSON-unmarshalled value as a multipart form
+// field string. float64 is handled specially: fmt's default %v/%g switches to
+// scientific notation for values >= ~1e6 (e.g. "1.185356e+06"), which some
+// backends reject when parsing the field as an integer. Use decimal notation
+// instead so size / block_num / offset-style numeric fields round-trip cleanly.
+// All other types fall through to %v.
+func formatFormFieldValue(v any) string {
+	if n, ok := v.(float64); ok {
+		return strconv.FormatFloat(n, 'f', -1, 64)
+	}
+	return fmt.Sprintf("%v", v)
+}

internal/cmdutil/fileupload_test.go

@@ -0,0 +1,375 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"bytes"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"github.com/larksuite/cli/internal/vfs/localfileio"
+)
+
+func TestParseFileFlag(t *testing.T) {
+	tests := []struct {
+		name         string
+		raw          string
+		defaultField string
+		wantField    string
+		wantPath     string
+		wantStdin    bool
+	}{
+		{
+			name:         "simple filename uses default field",
+			raw:          "photo.jpg",
+			defaultField: "file",
+			wantField:    "file",
+			wantPath:     "photo.jpg",
+			wantStdin:    false,
+		},
+		{
+			name:         "simple filename with custom default",
+			raw:          "photo.jpg",
+			defaultField: "image",
+			wantField:    "image",
+			wantPath:     "photo.jpg",
+			wantStdin:    false,
+		},
+		{
+			name:         "explicit field prefix",
+			raw:          "image=photo.jpg",
+			defaultField: "file",
+			wantField:    "image",
+			wantPath:     "photo.jpg",
+			wantStdin:    false,
+		},
+		{
+			name:         "stdin bare",
+			raw:          "-",
+			defaultField: "file",
+			wantField:    "file",
+			wantPath:     "",
+			wantStdin:    true,
+		},
+		{
+			name:         "stdin with field prefix",
+			raw:          "image=-",
+			defaultField: "file",
+			wantField:    "image",
+			wantPath:     "",
+			wantStdin:    true,
+		},
+		{
+			name:         "path with equals sign (only first equals splits)",
+			raw:          "field=path/to/file=1.jpg",
+			defaultField: "file",
+			wantField:    "field",
+			wantPath:     "path/to/file=1.jpg",
+			wantStdin:    false,
+		},
+		{
+			name:         "absolute path no prefix",
+			raw:          "/tmp/photo.jpg",
+			defaultField: "file",
+			wantField:    "file",
+			wantPath:     "/tmp/photo.jpg",
+			wantStdin:    false,
+		},
+		{
+			name:         "absolute path with field prefix",
+			raw:          "image=/tmp/photo.jpg",
+			defaultField: "file",
+			wantField:    "image",
+			wantPath:     "/tmp/photo.jpg",
+			wantStdin:    false,
+		},
+		{
+			name:         "empty field prefix falls through to default",
+			raw:          "=photo.jpg",
+			defaultField: "file",
+			wantField:    "file",
+			wantPath:     "=photo.jpg",
+			wantStdin:    false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			field, path, isStdin := ParseFileFlag(tt.raw, tt.defaultField)
+			if field != tt.wantField {
+				t.Errorf("field = %q, want %q", field, tt.wantField)
+			}
+			if path != tt.wantPath {
+				t.Errorf("path = %q, want %q", path, tt.wantPath)
+			}
+			if isStdin != tt.wantStdin {
+				t.Errorf("isStdin = %v, want %v", isStdin, tt.wantStdin)
+			}
+		})
+	}
+}
+
+func TestValidateFileFlag(t *testing.T) {
+	tests := []struct {
+		name       string
+		file       string
+		params     string
+		data       string
+		outputPath string
+		pageAll    bool
+		httpMethod string
+		wantErr    string // empty means no error
+	}{
+		{
+			name:       "empty file is valid",
+			file:       "",
+			httpMethod: "GET",
+			wantErr:    "",
+		},
+		{
+			name:       "empty file path",
+			file:       "field=",
+			httpMethod: "POST",
+			wantErr:    "--file: empty file path",
+		},
+		{
+			name:       "file with output",
+			file:       "photo.jpg",
+			outputPath: "out.json",
+			httpMethod: "POST",
+			wantErr:    "--file and --output are mutually exclusive",
+		},
+		{
+			name:       "file with page-all",
+			file:       "photo.jpg",
+			pageAll:    true,
+			httpMethod: "POST",
+			wantErr:    "--file and --page-all are mutually exclusive",
+		},
+		{
+			name:       "stdin file with stdin data",
+			file:       "-",
+			data:       "-",
+			httpMethod: "POST",
+			wantErr:    "--file and --data cannot both read from stdin",
+		},
+		{
+			name:       "stdin file with stdin params",
+			file:       "-",
+			params:     "-",
+			httpMethod: "POST",
+			wantErr:    "--file and --params cannot both read from stdin",
+		},
+		{
+			name:       "file with GET method",
+			file:       "photo.jpg",
+			httpMethod: "GET",
+			wantErr:    "--file requires POST, PUT, PATCH, or DELETE method",
+		},
+		{
+			name:       "file with POST method",
+			file:       "photo.jpg",
+			httpMethod: "POST",
+			wantErr:    "",
+		},
+		{
+			name:       "file with PUT method",
+			file:       "photo.jpg",
+			httpMethod: "PUT",
+			wantErr:    "",
+		},
+		{
+			name:       "file with PATCH method",
+			file:       "photo.jpg",
+			httpMethod: "PATCH",
+			wantErr:    "",
+		},
+		{
+			name:       "file with DELETE method",
+			file:       "photo.jpg",
+			httpMethod: "DELETE",
+			wantErr:    "",
+		},
+		{
+			name:       "stdin with field prefix and data stdin",
+			file:       "image=-",
+			data:       "-",
+			httpMethod: "POST",
+			wantErr:    "--file and --data cannot both read from stdin",
+		},
+		{
+			name:       "stdin with field prefix and params stdin",
+			file:       "image=-",
+			params:     "-",
+			httpMethod: "POST",
+			wantErr:    "--file and --params cannot both read from stdin",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			err := ValidateFileFlag(tt.file, tt.params, tt.data, tt.outputPath, tt.pageAll, tt.httpMethod)
+			if tt.wantErr == "" {
+				if err != nil {
+					t.Errorf("unexpected error: %v", err)
+				}
+				return
+			}
+			if err == nil {
+				t.Fatalf("expected error containing %q, got nil", tt.wantErr)
+			}
+			if !strings.Contains(err.Error(), tt.wantErr) {
+				t.Errorf("error = %q, want containing %q", err.Error(), tt.wantErr)
+			}
+		})
+	}
+}
+
+func TestBuildFormdata(t *testing.T) {
+	fio := &localfileio.LocalFileIO{}
+
+	t.Run("stdin success", func(t *testing.T) {
+		stdin := bytes.NewReader([]byte("file-content-here"))
+		fd, err := BuildFormdata(fio, "file", "", true, stdin, nil)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if fd == nil {
+			t.Fatal("expected non-nil Formdata")
+		}
+	})
+
+	t.Run("stdin nil reader", func(t *testing.T) {
+		_, err := BuildFormdata(fio, "file", "", true, nil, nil)
+		if err == nil {
+			t.Fatal("expected error for nil stdin")
+		}
+		if !strings.Contains(err.Error(), "stdin is not available") {
+			t.Errorf("error = %q, want containing %q", err.Error(), "stdin is not available")
+		}
+	})
+
+	t.Run("stdin empty", func(t *testing.T) {
+		stdin := bytes.NewReader([]byte{})
+		_, err := BuildFormdata(fio, "file", "", true, stdin, nil)
+		if err == nil {
+			t.Fatal("expected error for empty stdin")
+		}
+		if !strings.Contains(err.Error(), "stdin is empty") {
+			t.Errorf("error = %q, want containing %q", err.Error(), "stdin is empty")
+		}
+	})
+
+	t.Run("file open success", func(t *testing.T) {
+		dir := t.TempDir()
+		TestChdir(t, dir)
+
+		if err := os.WriteFile(filepath.Join(dir, "test.txt"), []byte("hello"), 0600); err != nil {
+			t.Fatalf("failed to create test file: %v", err)
+		}
+
+		fd, err := BuildFormdata(fio, "photo", "test.txt", false, nil, nil)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if fd == nil {
+			t.Fatal("expected non-nil Formdata")
+		}
+	})
+
+	t.Run("file not found", func(t *testing.T) {
+		dir := t.TempDir()
+		TestChdir(t, dir)
+
+		_, err := BuildFormdata(fio, "file", "nonexistent.txt", false, nil, nil)
+		if err == nil {
+			t.Fatal("expected error for missing file")
+		}
+		if !strings.Contains(err.Error(), "cannot open file:") {
+			t.Errorf("error = %q, want containing %q", err.Error(), "cannot open file:")
+		}
+	})
+
+	t.Run("dataJSON fields added", func(t *testing.T) {
+		dir := t.TempDir()
+		TestChdir(t, dir)
+
+		if err := os.WriteFile(filepath.Join(dir, "upload.bin"), []byte("data"), 0600); err != nil {
+			t.Fatalf("failed to create test file: %v", err)
+		}
+
+		dataJSON := map[string]any{
+			"file_name":   "report.pdf",
+			"parent_type": "doc_image",
+			"size":        1024,
+		}
+
+		fd, err := BuildFormdata(fio, "file", "upload.bin", false, nil, dataJSON)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if fd == nil {
+			t.Fatal("expected non-nil Formdata")
+		}
+	})
+
+	t.Run("dataJSON nil is fine", func(t *testing.T) {
+		stdin := bytes.NewReader([]byte("content"))
+		fd, err := BuildFormdata(fio, "file", "", true, stdin, nil)
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if fd == nil {
+			t.Fatal("expected non-nil Formdata")
+		}
+	})
+
+	t.Run("dataJSON non-map is ignored", func(t *testing.T) {
+		stdin := bytes.NewReader([]byte("content"))
+		fd, err := BuildFormdata(fio, "file", "", true, stdin, "not-a-map")
+		if err != nil {
+			t.Fatalf("unexpected error: %v", err)
+		}
+		if fd == nil {
+			t.Fatal("expected non-nil Formdata")
+		}
+	})
+}
+
+// TestFormatFormFieldValue locks in the fix for the float64 -> scientific
+// notation bug. JSON numbers unmarshal to float64, and fmt's default %v for
+// float64 delegates to %g which switches to scientific notation at ~1e6
+// (e.g. 1185356 -> "1.185356e+06"). Backends that parse the form field as an
+// integer reject that, surfacing as a generic "params error".
+func TestFormatFormFieldValue(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name string
+		in   any
+		want string
+	}{
+		{"float64 large integer avoids scientific", float64(1185356), "1185356"},
+		{"float64 below scientific threshold", float64(358934), "358934"},
+		{"float64 zero", float64(0), "0"},
+		{"float64 huge", float64(20 * 1024 * 1024), "20971520"},
+		{"float64 negative", float64(-42), "-42"},
+		{"float64 fractional preserved", float64(3.14), "3.14"},
+		{"string pass-through", "hello", "hello"},
+		{"bool true", true, "true"},
+		{"int via %v", 42, "42"},
+		{"int64 via %v", int64(9007199254740992), "9007199254740992"},
+	}
+
+	for _, temp := range tests {
+		tt := temp
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+			got := formatFormFieldValue(tt.in)
+			if got != tt.want {
+				t.Fatalf("formatFormFieldValue(%v) = %q, want %q", tt.in, got, tt.want)
+			}
+		})
+	}
+}

internal/cmdutil/identity_flag.go

@@ -0,0 +1,68 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"github.com/spf13/cobra"
+)
+
+// AddAPIIdentityFlag registers the standard --as flag shape used by api/service commands.
+func AddAPIIdentityFlag(ctx context.Context, cmd *cobra.Command, f *Factory, target *string) {
+	addIdentityFlag(ctx, cmd, f, target, identityFlagConfig{
+		defaultValue:     "auto",
+		usage:            "identity type: user | bot | auto (default)",
+		completionValues: []string{"user", "bot"},
+	})
+}
+
+// AddShortcutIdentityFlag registers the standard --as flag shape used by shortcuts.
+func AddShortcutIdentityFlag(ctx context.Context, cmd *cobra.Command, f *Factory, authTypes []string) {
+	if len(authTypes) == 0 {
+		authTypes = []string{"user"}
+	}
+	addIdentityFlag(ctx, cmd, f, nil, identityFlagConfig{
+		defaultValue:     authTypes[0],
+		usage:            "identity type: " + strings.Join(authTypes, " | "),
+		completionValues: authTypes,
+	})
+}
+
+type identityFlagConfig struct {
+	defaultValue     string
+	usage            string
+	completionValues []string
+}
+
+// addIdentityFlag centralizes --as registration and strict-mode UX.
+// When strict mode is active, the flag is still accepted for compatibility
+// but hidden from help/completion and locked to the forced identity by default.
+func addIdentityFlag(ctx context.Context, cmd *cobra.Command, f *Factory, target *string, cfg identityFlagConfig) {
+	if forced := f.ResolveStrictMode(ctx).ForcedIdentity(); forced != "" {
+		// Keep registering --as in strict mode even though it is hidden.
+		// This preserves parser compatibility for existing invocations that still pass
+		// --as, and keeps downstream GetString("as") / ResolveAs paths stable.
+		// The usage text below is effectively placeholder text because the flag is hidden.
+		registerIdentityFlag(cmd, target, string(forced),
+			fmt.Sprintf("identity locked to %s by strict mode (admin-managed)", forced))
+		_ = cmd.Flags().MarkHidden("as")
+		return
+	}
+
+	registerIdentityFlag(cmd, target, cfg.defaultValue, cfg.usage)
+	RegisterFlagCompletion(cmd, "as", func(_ *cobra.Command, _ []string, _ string) ([]string, cobra.ShellCompDirective) {
+		return cfg.completionValues, cobra.ShellCompDirectiveNoFileComp
+	})
+}
+
+func registerIdentityFlag(cmd *cobra.Command, target *string, defaultValue, usage string) {
+	if target != nil {
+		cmd.Flags().StringVar(target, "as", defaultValue, usage)
+		return
+	}
+	cmd.Flags().String("as", defaultValue, usage)
+}

internal/cmdutil/identity_flag_test.go

@@ -0,0 +1,68 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"context"
+	"testing"
+
+	"github.com/larksuite/cli/internal/core"
+	"github.com/spf13/cobra"
+)
+
+func TestAddAPIIdentityFlag_NonStrictMode(t *testing.T) {
+	f, _, _, _ := TestFactory(t, &core.CliConfig{AppID: "a", AppSecret: "s"})
+	cmd := &cobra.Command{Use: "test"}
+
+	AddAPIIdentityFlag(context.Background(), cmd, f, nil)
+
+	flag := cmd.Flags().Lookup("as")
+	if flag == nil {
+		t.Fatal("expected --as flag to be registered")
+	}
+	if flag.Hidden {
+		t.Fatal("expected --as flag to be visible outside strict mode")
+	}
+	if got := flag.DefValue; got != "auto" {
+		t.Fatalf("default value = %q, want %q", got, "auto")
+	}
+}
+
+func TestAddAPIIdentityFlag_StrictModeHidesFlagAndLocksDefault(t *testing.T) {
+	f, _, _, _ := TestFactory(t, &core.CliConfig{
+		AppID: "a", AppSecret: "s", SupportedIdentities: 2,
+	})
+	cmd := &cobra.Command{Use: "test"}
+
+	AddAPIIdentityFlag(context.Background(), cmd, f, nil)
+
+	flag := cmd.Flags().Lookup("as")
+	if flag == nil {
+		t.Fatal("expected --as flag to be registered")
+	}
+	if !flag.Hidden {
+		t.Fatal("expected --as flag to be hidden in strict mode")
+	}
+	if got := flag.DefValue; got != "bot" {
+		t.Fatalf("default value = %q, want %q", got, "bot")
+	}
+}
+
+func TestAddShortcutIdentityFlag_UsesAuthTypes(t *testing.T) {
+	f, _, _, _ := TestFactory(t, &core.CliConfig{AppID: "a", AppSecret: "s"})
+	cmd := &cobra.Command{Use: "test"}
+
+	AddShortcutIdentityFlag(context.Background(), cmd, f, []string{"bot"})
+
+	flag := cmd.Flags().Lookup("as")
+	if flag == nil {
+		t.Fatal("expected --as flag to be registered")
+	}
+	if flag.Hidden {
+		t.Fatal("expected --as flag to be visible outside strict mode")
+	}
+	if got := flag.DefValue; got != "bot" {
+		t.Fatalf("default value = %q, want %q", got, "bot")
+	}
+}

internal/cmdutil/iostreams.go

@@ -3,7 +3,12 @@
 
 package cmdutil
 
-import "io"
+import (
+	"io"
+	"os"
+
+	"golang.org/x/term"
+)
 
 // IOStreams provides the standard input/output/error streams.
 // Commands should use these instead of os.Stdin/Stdout/Stderr
@@ -14,3 +19,45 @@ type IOStreams struct {
 	ErrOut     io.Writer
 	IsTerminal bool
 }
+
+// NewIOStreams builds an IOStreams from arbitrary readers/writers.
+// IsTerminal is derived from in's underlying *os.File, if any; non-file
+// readers (bytes.Buffer, strings.Reader, …) yield IsTerminal=false.
+func NewIOStreams(in io.Reader, out, errOut io.Writer) *IOStreams {
+	isTerminal := false
+	if f, ok := in.(*os.File); ok {
+		isTerminal = term.IsTerminal(int(f.Fd()))
+	}
+	return &IOStreams{In: in, Out: out, ErrOut: errOut, IsTerminal: isTerminal}
+}
+
+// SystemIO creates an IOStreams wired to the process's standard file descriptors.
+//
+//nolint:forbidigo // entry point for real stdio
+func SystemIO() *IOStreams {
+	return NewIOStreams(os.Stdin, os.Stdout, os.Stderr)
+}
+
+// normalizeStreams returns a fresh IOStreams with any nil field filled from
+// SystemIO(). Callers constructing a partial struct like &IOStreams{Out: buf}
+// get a usable result without nil writers leaking into RoundTripper warnings,
+// Cobra I/O, or credential-provider error paths.
+func normalizeStreams(s *IOStreams) *IOStreams {
+	if s == nil {
+		return SystemIO()
+	}
+	out := *s
+	if out.In == nil || out.Out == nil || out.ErrOut == nil {
+		sys := SystemIO()
+		if out.In == nil {
+			out.In = sys.In
+		}
+		if out.Out == nil {
+			out.Out = sys.Out
+		}
+		if out.ErrOut == nil {
+			out.ErrOut = sys.ErrOut
+		}
+	}
+	return &out
+}

internal/cmdutil/retry_transport_test.go

@@ -1,81 +0,0 @@
-// Copyright (c) 2026 Lark Technologies Pte. Ltd.
-// SPDX-License-Identifier: MIT
-
-package cmdutil
-
-import (
-	"io"
-	"net/http"
-	"strings"
-	"testing"
-	"time"
-)
-
-type roundTripFunc func(*http.Request) (*http.Response, error)
-
-func (f roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
-	return f(req)
-}
-
-func TestRetryTransport_NoRetry(t *testing.T) {
-	calls := 0
-	base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
-		calls++
-		return &http.Response{StatusCode: 200, Body: io.NopCloser(strings.NewReader("ok"))}, nil
-	})
-	rt := &RetryTransport{Base: base, MaxRetries: 0}
-	req, _ := http.NewRequest("GET", "http://example.com/test", nil)
-	resp, err := rt.RoundTrip(req)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if resp.StatusCode != 200 {
-		t.Errorf("expected 200, got %d", resp.StatusCode)
-	}
-	if calls != 1 {
-		t.Errorf("expected 1 call, got %d", calls)
-	}
-}
-
-func TestRetryTransport_RetryOn500(t *testing.T) {
-	calls := 0
-	base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
-		calls++
-		if calls < 3 {
-			return &http.Response{StatusCode: 500, Body: io.NopCloser(strings.NewReader("error"))}, nil
-		}
-		return &http.Response{StatusCode: 200, Body: io.NopCloser(strings.NewReader("ok"))}, nil
-	})
-	rt := &RetryTransport{Base: base, MaxRetries: 3, Delay: 1 * time.Millisecond}
-	req, _ := http.NewRequest("GET", "http://example.com/test", nil)
-	resp, err := rt.RoundTrip(req)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if resp.StatusCode != 200 {
-		t.Errorf("expected 200 after retries, got %d", resp.StatusCode)
-	}
-	if calls != 3 {
-		t.Errorf("expected 3 calls, got %d", calls)
-	}
-}
-
-func TestRetryTransport_DefaultNoRetry(t *testing.T) {
-	calls := 0
-	base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
-		calls++
-		return &http.Response{StatusCode: 500, Body: io.NopCloser(strings.NewReader("error"))}, nil
-	})
-	rt := &RetryTransport{Base: base} // default MaxRetries=0
-	req, _ := http.NewRequest("GET", "http://example.com/test", nil)
-	resp, err := rt.RoundTrip(req)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	if resp.StatusCode != 500 {
-		t.Errorf("expected 500 with no retries, got %d", resp.StatusCode)
-	}
-	if calls != 1 {
-		t.Errorf("expected 1 call with default config, got %d", calls)
-	}
-}

internal/cmdutil/secheader.go

@@ -6,7 +6,14 @@ package cmdutil
 import (
 	"context"
 	"net/http"
+	"reflect"
+	"runtime/debug"
+	"strings"
+	"sync"
 
+	"github.com/larksuite/cli/extension/credential"
+	"github.com/larksuite/cli/extension/fileio"
+	exttransport "github.com/larksuite/cli/extension/transport"
 	"github.com/larksuite/cli/internal/build"
 	larkcore "github.com/larksuite/oapi-sdk-go/v3/core"
 )
@@ -14,12 +21,21 @@ import (
 const (
 	HeaderSource      = "X-Cli-Source"
 	HeaderVersion     = "X-Cli-Version"
+	HeaderBuild       = "X-Cli-Build"
 	HeaderShortcut    = "X-Cli-Shortcut"
 	HeaderExecutionId = "X-Cli-Execution-Id"
 
 	SourceValue = "lark-cli"
 
 	HeaderUserAgent = "User-Agent"
+
+	// BuildKindOfficial / BuildKindExtended / BuildKindUnknown are the values
+	// reported in the X-Cli-Build header; see DetectBuildKind for semantics.
+	BuildKindOfficial = "official"
+	BuildKindExtended = "extended"
+	BuildKindUnknown  = "unknown"
+
+	officialModulePath = "github.com/larksuite/cli"
 )
 
 // UserAgentValue returns the User-Agent value: "lark-cli/{version}".
@@ -32,10 +48,108 @@ func BaseSecurityHeaders() http.Header {
 	h := make(http.Header)
 	h.Set(HeaderSource, SourceValue)
 	h.Set(HeaderVersion, build.Version)
+	h.Set(HeaderBuild, DetectBuildKind())
 	h.Set(HeaderUserAgent, UserAgentValue())
 	return h
 }
 
+var (
+	buildKindOnce sync.Once
+	buildKindVal  string
+)
+
+// DetectBuildKind reports whether this binary is the official CLI, an
+// extended/repackaged build, or unknown. The result is cached via sync.Once
+// so it is computed only on the first call.
+//
+// IMPORTANT: must NOT be called from any package init(). Go's init ordering
+// follows the import graph; ISV providers registered via blank import may not
+// have run yet, which would misclassify an extended build as official. Call
+// only when handling an actual request (e.g. from BaseSecurityHeaders).
+func DetectBuildKind() string {
+	buildKindOnce.Do(func() {
+		buildKindVal = computeBuildKind()
+	})
+	return buildKindVal
+}
+
+// computeBuildKind performs the actual detection without any caching.
+// Exposed for tests. Gathers runtime/global inputs and delegates the pure
+// branching logic to classifyBuild so that logic can be unit-tested without
+// mutating process-wide provider registries.
+func computeBuildKind() string {
+	info, ok := debug.ReadBuildInfo()
+	mainPath := ""
+	if ok {
+		mainPath = info.Main.Path
+	}
+
+	credProviders := credential.Providers()
+	creds := make([]any, len(credProviders))
+	for i, p := range credProviders {
+		creds[i] = p
+	}
+
+	var tp any
+	if p := exttransport.GetProvider(); p != nil {
+		tp = p
+	}
+	var fp any
+	if p := fileio.GetProvider(); p != nil {
+		fp = p
+	}
+	return classifyBuild(mainPath, ok, creds, tp, fp)
+}
+
+// classifyBuild is the pure classification logic used by computeBuildKind.
+// Callers supply concrete values so every branch is reachable from tests
+// without touching debug.ReadBuildInfo or the extension registries.
+//
+// Priority order mirrors the design doc:
+//  1. no build info → unknown
+//  2. main module path not the official one → extended (ISV wrapper)
+//  3. any non-builtin provider (credential / transport / fileio) → extended
+//  4. otherwise → official
+func classifyBuild(mainPath string, haveBuildInfo bool, credProviders []any, transportProvider, fileioProvider any) string {
+	if !haveBuildInfo {
+		return BuildKindUnknown
+	}
+	if mainPath != "" && mainPath != officialModulePath {
+		return BuildKindExtended
+	}
+	for _, p := range credProviders {
+		if !isBuiltinProvider(p) {
+			return BuildKindExtended
+		}
+	}
+	if transportProvider != nil && !isBuiltinProvider(transportProvider) {
+		return BuildKindExtended
+	}
+	if fileioProvider != nil && !isBuiltinProvider(fileioProvider) {
+		return BuildKindExtended
+	}
+	return BuildKindOfficial
+}
+
+// isBuiltinProvider reports whether p is declared under the official module
+// path. Third-party providers live under their own module and fail this check.
+// Using reflect.PkgPath makes this robust against Name() spoofing since
+// package paths are fixed at compile time.
+func isBuiltinProvider(p any) bool {
+	if p == nil {
+		return false
+	}
+	t := reflect.TypeOf(p)
+	if t == nil {
+		return false
+	}
+	if t.Kind() == reflect.Ptr {
+		t = t.Elem()
+	}
+	pkg := t.PkgPath()
+	return pkg == officialModulePath || strings.HasPrefix(pkg, officialModulePath+"/")
+}
+
 // ── Context utilities ──
 
 type ctxKey string

internal/cmdutil/secheader_sidecar_test.go

@@ -0,0 +1,34 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build authsidecar
+
+package cmdutil
+
+import (
+	"testing"
+
+	sidecarcred "github.com/larksuite/cli/extension/credential/sidecar"
+	sidecartrans "github.com/larksuite/cli/extension/transport/sidecar"
+)
+
+// TestIsBuiltinProvider_SidecarProviders locks the classification for the
+// sidecar-mode providers enumerated in design doc §3.3.2 as "官方自带". These
+// types only compile when the `authsidecar` build tag is active, so the test
+// is guarded by the same tag.
+func TestIsBuiltinProvider_SidecarProviders(t *testing.T) {
+	cases := []struct {
+		name     string
+		provider any
+	}{
+		{"sidecar credential provider", &sidecarcred.Provider{}},
+		{"sidecar transport provider", &sidecartrans.Provider{}},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			if !isBuiltinProvider(tc.provider) {
+				t.Fatalf("%T must be classified as builtin (PkgPath under %s)", tc.provider, officialModulePath)
+			}
+		})
+	}
+}

internal/cmdutil/secheader_test.go

@@ -0,0 +1,262 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"context"
+	"net/http"
+	"testing"
+
+	"github.com/larksuite/cli/extension/credential"
+	envcred "github.com/larksuite/cli/extension/credential/env"
+	"github.com/larksuite/cli/internal/vfs/localfileio"
+)
+
+// ---------------------------------------------------------------------------
+// isBuiltinProvider
+// ---------------------------------------------------------------------------
+
+// cmdutilLocalProvider has PkgPath under the official module
+// ("github.com/larksuite/cli/internal/cmdutil") and should be classified
+// as builtin.
+type cmdutilLocalProvider struct{}
+
+// Name intentionally returns a value that mimics an external provider; the
+// PkgPath-based classifier must ignore it. See TestIsBuiltinProvider_PkgPathNotSpoofableByName.
+func (cmdutilLocalProvider) Name() string { return "external-spoofed-provider" }
+func (cmdutilLocalProvider) ResolveAccount(context.Context) (*credential.Account, error) {
+	return nil, nil
+}
+func (cmdutilLocalProvider) ResolveToken(context.Context, credential.TokenSpec) (*credential.Token, error) {
+	return nil, nil
+}
+
+func TestIsBuiltinProvider_Nil(t *testing.T) {
+	if isBuiltinProvider(nil) {
+		t.Fatal("isBuiltinProvider(nil) = true, want false")
+	}
+}
+
+func TestIsBuiltinProvider_TypeUnderOfficialModule(t *testing.T) {
+	if !isBuiltinProvider(&cmdutilLocalProvider{}) {
+		t.Fatal("type under github.com/larksuite/cli/... should be builtin")
+	}
+}
+
+func TestIsBuiltinProvider_StdlibTypeIsNotBuiltin(t *testing.T) {
+	// A standard library type has PkgPath "net/http" — outside official module.
+	// This covers the non-builtin branch, which we cannot trigger from inside
+	// this test file using a locally-defined type.
+	if isBuiltinProvider(&http.Server{}) {
+		t.Fatal("stdlib type classified as builtin, PkgPath check is broken")
+	}
+}
+
+func TestIsBuiltinProvider_PkgPathNotSpoofableByName(t *testing.T) {
+	// Name() returns a string, but classification uses reflect.Type.PkgPath
+	// which is compile-time fixed. The local type returns a name that looks
+	// like an ISV provider; it must still classify as builtin.
+	p := &cmdutilLocalProvider{}
+	if p.Name() != "external-spoofed-provider" {
+		t.Fatalf("sanity check: Name() = %q, spoof value lost", p.Name())
+	}
+	if !isBuiltinProvider(p) {
+		t.Fatal("isBuiltinProvider should decide by PkgPath, not Name()")
+	}
+}
+
+// TestIsBuiltinProvider_NonPointerValues covers the non-pointer reflect branch.
+// The existing tests only exercise pointer receivers (&T{}); when a provider
+// is passed by value the reflect.Kind is not Ptr and t.Elem() is skipped.
+func TestIsBuiltinProvider_NonPointerValues(t *testing.T) {
+	if !isBuiltinProvider(cmdutilLocalProvider{}) {
+		t.Fatal("non-pointer local type should be builtin (PkgPath still under official module)")
+	}
+	// http.Server as a non-pointer — PkgPath "net/http", not under official.
+	if isBuiltinProvider(http.Server{}) {
+		t.Fatal("non-pointer stdlib type should not be builtin")
+	}
+}
+
+// TestIsBuiltinProvider_RealBuiltinProviders locks down the classification
+// for the concrete providers enumerated in design doc §3.3.2 as "官方自带":
+// env credential provider and local fileio provider. If any of these is
+// moved out of the official module tree in the future, this test must flip
+// red so the new package path is explicitly considered.
+//
+// The sidecar providers (extension/credential/sidecar and
+// extension/transport/sidecar) are guarded by the `authsidecar` build tag
+// and covered in secheader_sidecar_test.go under that tag.
+func TestIsBuiltinProvider_RealBuiltinProviders(t *testing.T) {
+	cases := []struct {
+		name     string
+		provider any
+	}{
+		{"env credential provider", &envcred.Provider{}},
+		{"local fileio provider", &localfileio.Provider{}},
+	}
+	for _, tc := range cases {
+		t.Run(tc.name, func(t *testing.T) {
+			if !isBuiltinProvider(tc.provider) {
+				t.Fatalf("%T must be classified as builtin (PkgPath under %s)", tc.provider, officialModulePath)
+			}
+		})
+	}
+}
+
+// ---------------------------------------------------------------------------
+// computeBuildKind
+// ---------------------------------------------------------------------------
+
+func TestComputeBuildKind_ReturnsKnownValue(t *testing.T) {
+	// Under `go test`, Main.Path is typically the module being tested
+	// ("github.com/larksuite/cli"); the concrete return may still be
+	// official, extended, or unknown depending on Main.Path and the
+	// registered providers. Just assert it's one of the defined values.
+	got := computeBuildKind()
+	switch got {
+	case BuildKindOfficial, BuildKindExtended, BuildKindUnknown:
+	default:
+		t.Fatalf("computeBuildKind() = %q, want one of official/extended/unknown", got)
+	}
+}
+
+// ---------------------------------------------------------------------------
+// classifyBuild — pure branching logic
+// ---------------------------------------------------------------------------
+//
+// These tests cover every branch of classifyBuild with explicit inputs,
+// which is impossible from computeBuildKind alone because debug.ReadBuildInfo
+// and the process-wide provider registries can't be reshaped in a test.
+
+func TestClassifyBuild_NoBuildInfo_ReturnsUnknown(t *testing.T) {
+	if got := classifyBuild("", false, nil, nil, nil); got != BuildKindUnknown {
+		t.Fatalf("classifyBuild(haveBuildInfo=false) = %q, want %q", got, BuildKindUnknown)
+	}
+}
+
+func TestClassifyBuild_ExtendedMainPath_ReturnsExtended(t *testing.T) {
+	cases := []string{
+		"github.com/acme/lark-cli-wrapper",
+		"example.com/isv/lark",
+		"gitlab.mycorp.internal/tools/lark-cli-fork",
+	}
+	for _, mp := range cases {
+		t.Run(mp, func(t *testing.T) {
+			if got := classifyBuild(mp, true, nil, nil, nil); got != BuildKindExtended {
+				t.Fatalf("mainPath=%q classifyBuild = %q, want %q", mp, got, BuildKindExtended)
+			}
+		})
+	}
+}
+
+func TestClassifyBuild_OfficialMainPath_NoProviders_ReturnsOfficial(t *testing.T) {
+	if got := classifyBuild(officialModulePath, true, nil, nil, nil); got != BuildKindOfficial {
+		t.Fatalf("classifyBuild(official, no providers) = %q, want %q", got, BuildKindOfficial)
+	}
+}
+
+func TestClassifyBuild_EmptyMainPath_DoesNotTriggerExtended(t *testing.T) {
+	// An empty Main.Path (rare, e.g. `go run` pre-1.18) must not be treated
+	// as extended by itself — the classifier falls through to provider checks.
+	if got := classifyBuild("", true, nil, nil, nil); got != BuildKindOfficial {
+		t.Fatalf("classifyBuild(empty mainPath, no providers) = %q, want %q", got, BuildKindOfficial)
+	}
+}
+
+func TestClassifyBuild_NonBuiltinCredentialProvider_ReturnsExtended(t *testing.T) {
+	// Any non-builtin credential provider flips the verdict to extended.
+	got := classifyBuild(officialModulePath, true, []any{&http.Server{}}, nil, nil)
+	if got != BuildKindExtended {
+		t.Fatalf("classifyBuild with external credential = %q, want %q", got, BuildKindExtended)
+	}
+}
+
+func TestClassifyBuild_MixedCredentialProviders_ExtendedWins(t *testing.T) {
+	// Even if most providers are builtin, a single external one decides.
+	providers := []any{&cmdutilLocalProvider{}, &http.Server{}}
+	if got := classifyBuild(officialModulePath, true, providers, nil, nil); got != BuildKindExtended {
+		t.Fatalf("classifyBuild mixed providers = %q, want %q", got, BuildKindExtended)
+	}
+}
+
+func TestClassifyBuild_NonBuiltinTransportProvider_ReturnsExtended(t *testing.T) {
+	got := classifyBuild(officialModulePath, true, nil, &http.Server{}, nil)
+	if got != BuildKindExtended {
+		t.Fatalf("classifyBuild with external transport = %q, want %q", got, BuildKindExtended)
+	}
+}
+
+func TestClassifyBuild_NonBuiltinFileioProvider_ReturnsExtended(t *testing.T) {
+	got := classifyBuild(officialModulePath, true, nil, nil, &http.Server{})
+	if got != BuildKindExtended {
+		t.Fatalf("classifyBuild with external fileio = %q, want %q", got, BuildKindExtended)
+	}
+}
+
+func TestClassifyBuild_AllBuiltinProviders_ReturnsOfficial(t *testing.T) {
+	// All three slots filled with builtin providers must still classify as official.
+	got := classifyBuild(
+		officialModulePath, true,
+		[]any{&cmdutilLocalProvider{}},
+		&cmdutilLocalProvider{},
+		&cmdutilLocalProvider{},
+	)
+	if got != BuildKindOfficial {
+		t.Fatalf("classifyBuild all-builtin = %q, want %q", got, BuildKindOfficial)
+	}
+}
+
+// TestClassifyBuild_MainPathPriorityOverProviders documents that the main
+// module path takes precedence: even with only builtin providers, a non-
+// official main path still yields extended.
+func TestClassifyBuild_MainPathPriorityOverProviders(t *testing.T) {
+	got := classifyBuild(
+		"github.com/acme/lark-wrapper", true,
+		[]any{&cmdutilLocalProvider{}},
+		&cmdutilLocalProvider{},
+		&cmdutilLocalProvider{},
+	)
+	if got != BuildKindExtended {
+		t.Fatalf("main-path override failed: got %q, want %q", got, BuildKindExtended)
+	}
+}
+
+// ---------------------------------------------------------------------------
+// DetectBuildKind — sync.Once caching
+// ---------------------------------------------------------------------------
+
+func TestDetectBuildKind_StableAcrossCalls(t *testing.T) {
+	a := DetectBuildKind()
+	b := DetectBuildKind()
+	if a != b {
+		t.Fatalf("DetectBuildKind() returned different values on repeat: %q vs %q", a, b)
+	}
+}
+
+// ---------------------------------------------------------------------------
+// BaseSecurityHeaders
+// ---------------------------------------------------------------------------
+
+func TestBaseSecurityHeaders_IncludesBuildHeader(t *testing.T) {
+	h := BaseSecurityHeaders()
+	v := h.Get(HeaderBuild)
+	if v == "" {
+		t.Fatal("BaseSecurityHeaders missing X-Cli-Build header")
+	}
+	switch v {
+	case BuildKindOfficial, BuildKindExtended, BuildKindUnknown:
+	default:
+		t.Fatalf("X-Cli-Build = %q, want one of official/extended/unknown", v)
+	}
+}
+
+func TestBaseSecurityHeaders_AllRequiredHeaders(t *testing.T) {
+	h := BaseSecurityHeaders()
+	for _, key := range []string{HeaderSource, HeaderVersion, HeaderBuild, HeaderUserAgent} {
+		if h.Get(key) == "" {
+			t.Errorf("BaseSecurityHeaders missing %s", key)
+		}
+	}
+}

internal/cmdutil/transport.go

@@ -72,6 +72,24 @@ func (t *UserAgentTransport) RoundTrip(req *http.Request) (*http.Response, error
 	return util.FallbackTransport().RoundTrip(req)
 }
 
+// BuildHeaderTransport is an http.RoundTripper that force-writes the
+// X-Cli-Build header before every request. Used in the SDK transport chain,
+// where SecurityHeaderTransport is not installed, to prevent extensions from
+// tampering with the build classification. The direct HTTP chain is already
+// covered by SecurityHeaderTransport iterating BaseSecurityHeaders.
+type BuildHeaderTransport struct {
+	Base http.RoundTripper
+}
+
+func (t *BuildHeaderTransport) RoundTrip(req *http.Request) (*http.Response, error) {
+	req = req.Clone(req.Context())
+	req.Header.Set(HeaderBuild, DetectBuildKind())
+	if t.Base != nil {
+		return t.Base.RoundTrip(req)
+	}
+	return util.FallbackTransport().RoundTrip(req)
+}
+
 // SecurityHeaderTransport is an http.RoundTripper that injects CLI security
 // headers into every request. Shortcut headers are read from the request context.
 type SecurityHeaderTransport struct {
@@ -104,20 +122,47 @@ func (t *SecurityHeaderTransport) RoundTrip(req *http.Request) (*http.Response,
 }
 
 // extensionMiddleware wraps the built-in transport chain with pre/post hooks.
-// The built-in chain always executes and cannot be skipped or overridden.
-// The original request context is restored after PreRoundTrip to prevent
+// The built-in chain always executes unless the extension is an
+// exttransport.AbortableInterceptor and its PreRoundTripE returns a non-nil
+// error; it cannot otherwise be skipped or overridden.
+//
+// The original request context is restored after the pre hook to prevent
 // extensions from tampering with cancellation, deadlines, or built-in values.
+// Cloning the request isolates header/URL/etc. mutations from the caller's
+// request object; req.Body is intentionally shared — extensions that consume
+// it are responsible for rewinding (see Interceptor doc).
 type extensionMiddleware struct {
-	Base http.RoundTripper
-	Ext  exttransport.Interceptor
+	Base    http.RoundTripper
+	Ext     exttransport.Interceptor
+	ExtName string // Provider.Name(), captured at wrap time for *AbortError.Extension
 }
 
-// RoundTrip calls PreRoundTrip, restores the original context, executes
-// the built-in chain, then calls the post hook if non-nil.
+// RoundTrip invokes the interceptor pre hook, restores the original context,
+// executes the built-in chain (unless aborted), then calls the post hook if
+// non-nil. When the extension implements AbortableInterceptor and returns a
+// non-nil error from PreRoundTripE, the built-in chain is skipped and an
+// *exttransport.AbortError is returned; the post hook is still invoked with
+// (nil, reason) so extensions can unwind resources.
 func (m *extensionMiddleware) RoundTrip(req *http.Request) (*http.Response, error) {
 	origCtx := req.Context()
-	req = req.Clone(origCtx) // isolate caller's request before extension mutations
-	post := m.Ext.PreRoundTrip(req)
+	req = req.Clone(origCtx)
+
+	var (
+		post    func(*http.Response, error)
+		abortEr error
+	)
+	if a, ok := m.Ext.(exttransport.AbortableInterceptor); ok {
+		post, abortEr = a.PreRoundTripE(req)
+	} else {
+		post = m.Ext.PreRoundTrip(req)
+	}
+	if abortEr != nil {
+		if post != nil {
+			post(nil, abortEr)
+		}
+		return nil, &exttransport.AbortError{Extension: m.ExtName, Reason: abortEr}
+	}
+
 	req = req.WithContext(origCtx) // restore original context
 	resp, err := m.Base.RoundTrip(req)
 	if post != nil {
@@ -137,5 +182,5 @@ func wrapWithExtension(transport http.RoundTripper) http.RoundTripper {
 	if tr == nil {
 		return transport
 	}
-	return &extensionMiddleware{Base: transport, Ext: tr}
+	return &extensionMiddleware{Base: transport, Ext: tr, ExtName: p.Name()}
 }

internal/cmdutil/transport_test.go

@@ -0,0 +1,531 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package cmdutil
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+	"time"
+
+	exttransport "github.com/larksuite/cli/extension/transport"
+	internalauth "github.com/larksuite/cli/internal/auth"
+)
+
+type roundTripFunc func(*http.Request) (*http.Response, error)
+
+func (f roundTripFunc) RoundTrip(req *http.Request) (*http.Response, error) {
+	return f(req)
+}
+
+// ---------------------------------------------------------------------------
+// RetryTransport
+// ---------------------------------------------------------------------------
+
+func TestRetryTransport_NoRetry(t *testing.T) {
+	calls := 0
+	base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		calls++
+		return &http.Response{StatusCode: 200, Body: io.NopCloser(strings.NewReader("ok"))}, nil
+	})
+	rt := &RetryTransport{Base: base, MaxRetries: 0}
+	req, _ := http.NewRequest("GET", "http://example.com/test", nil)
+	resp, err := rt.RoundTrip(req)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if resp.StatusCode != 200 {
+		t.Errorf("expected 200, got %d", resp.StatusCode)
+	}
+	if calls != 1 {
+		t.Errorf("expected 1 call, got %d", calls)
+	}
+}
+
+func TestRetryTransport_RetryOn500(t *testing.T) {
+	calls := 0
+	base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		calls++
+		if calls < 3 {
+			return &http.Response{StatusCode: 500, Body: io.NopCloser(strings.NewReader("error"))}, nil
+		}
+		return &http.Response{StatusCode: 200, Body: io.NopCloser(strings.NewReader("ok"))}, nil
+	})
+	rt := &RetryTransport{Base: base, MaxRetries: 3, Delay: 1 * time.Millisecond}
+	req, _ := http.NewRequest("GET", "http://example.com/test", nil)
+	resp, err := rt.RoundTrip(req)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if resp.StatusCode != 200 {
+		t.Errorf("expected 200 after retries, got %d", resp.StatusCode)
+	}
+	if calls != 3 {
+		t.Errorf("expected 3 calls, got %d", calls)
+	}
+}
+
+func TestRetryTransport_DefaultNoRetry(t *testing.T) {
+	calls := 0
+	base := roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		calls++
+		return &http.Response{StatusCode: 500, Body: io.NopCloser(strings.NewReader("error"))}, nil
+	})
+	rt := &RetryTransport{Base: base} // default MaxRetries=0
+	req, _ := http.NewRequest("GET", "http://example.com/test", nil)
+	resp, err := rt.RoundTrip(req)
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	if resp.StatusCode != 500 {
+		t.Errorf("expected 500 with no retries, got %d", resp.StatusCode)
+	}
+	if calls != 1 {
+		t.Errorf("expected 1 call with default config, got %d", calls)
+	}
+}
+
+// ---------------------------------------------------------------------------
+// buildSDKTransport chain composition
+// ---------------------------------------------------------------------------
+
+func TestBuildSDKTransport_IncludesRetryTransport(t *testing.T) {
+	transport := buildSDKTransport()
+
+	// Chain: SecurityPolicy → BuildHeader → UserAgent → Retry → Base
+	sec, ok := transport.(*internalauth.SecurityPolicyTransport)
+	if !ok {
+		t.Fatalf("outer transport type = %T, want *auth.SecurityPolicyTransport", transport)
+	}
+	bh, ok := sec.Base.(*BuildHeaderTransport)
+	if !ok {
+		t.Fatalf("layer after SecurityPolicy = %T, want *BuildHeaderTransport", sec.Base)
+	}
+	ua, ok := bh.Base.(*UserAgentTransport)
+	if !ok {
+		t.Fatalf("layer after BuildHeader = %T, want *UserAgentTransport", bh.Base)
+	}
+	if _, ok := ua.Base.(*RetryTransport); !ok {
+		t.Fatalf("inner transport type = %T, want *RetryTransport", ua.Base)
+	}
+}
+
+func TestBuildSDKTransport_WithExtension(t *testing.T) {
+	exttransport.Register(&stubTransportProvider{})
+	t.Cleanup(func() { exttransport.Register(nil) })
+
+	transport := buildSDKTransport()
+
+	// Chain: extensionMiddleware → SecurityPolicy → BuildHeader → UserAgent → Retry → Base
+	mid, ok := transport.(*extensionMiddleware)
+	if !ok {
+		t.Fatalf("outer transport type = %T, want *extensionMiddleware", transport)
+	}
+	sec, ok := mid.Base.(*internalauth.SecurityPolicyTransport)
+	if !ok {
+		t.Fatalf("transport type = %T, want *auth.SecurityPolicyTransport", mid.Base)
+	}
+	bh, ok := sec.Base.(*BuildHeaderTransport)
+	if !ok {
+		t.Fatalf("layer after SecurityPolicy = %T, want *BuildHeaderTransport", sec.Base)
+	}
+	ua, ok := bh.Base.(*UserAgentTransport)
+	if !ok {
+		t.Fatalf("layer after BuildHeader = %T, want *UserAgentTransport", bh.Base)
+	}
+	if _, ok := ua.Base.(*RetryTransport); !ok {
+		t.Fatalf("innermost transport type = %T, want *RetryTransport", ua.Base)
+	}
+}
+
+func TestBuildSDKTransport_WithoutExtension(t *testing.T) {
+	exttransport.Register(nil)
+
+	transport := buildSDKTransport()
+
+	// Chain: SecurityPolicy → BuildHeader → UserAgent → Retry → Base
+	sec, ok := transport.(*internalauth.SecurityPolicyTransport)
+	if !ok {
+		t.Fatalf("outer transport type = %T, want *auth.SecurityPolicyTransport", transport)
+	}
+	bh, ok := sec.Base.(*BuildHeaderTransport)
+	if !ok {
+		t.Fatalf("layer after SecurityPolicy = %T, want *BuildHeaderTransport", sec.Base)
+	}
+	ua, ok := bh.Base.(*UserAgentTransport)
+	if !ok {
+		t.Fatalf("layer after BuildHeader = %T, want *UserAgentTransport", bh.Base)
+	}
+	if _, ok := ua.Base.(*RetryTransport); !ok {
+		t.Fatalf("inner transport type = %T, want *RetryTransport", ua.Base)
+	}
+}
+
+// ---------------------------------------------------------------------------
+// extensionMiddleware — legacy Interceptor path
+// ---------------------------------------------------------------------------
+
+type stubTransportProvider struct {
+	interceptor exttransport.Interceptor
+}
+
+func (s *stubTransportProvider) Name() string { return "stub" }
+func (s *stubTransportProvider) ResolveInterceptor(context.Context) exttransport.Interceptor {
+	if s.interceptor != nil {
+		return s.interceptor
+	}
+	return &stubTransportImpl{}
+}
+
+type stubTransportImpl struct{}
+
+func (s *stubTransportImpl) PreRoundTrip(req *http.Request) func(*http.Response, error) {
+	return nil
+}
+
+// headerCapturingInterceptor sets custom headers in PreRoundTrip and records
+// whether PostRoundTrip was called, to verify execution order.
+type headerCapturingInterceptor struct {
+	preCalled  bool
+	postCalled bool
+}
+
+func (h *headerCapturingInterceptor) PreRoundTrip(req *http.Request) func(*http.Response, error) {
+	h.preCalled = true
+	// Set a custom header that should survive (no built-in override)
+	req.Header.Set("X-Custom-Trace", "ext-trace-123")
+	// Try to override a security header — should be overwritten by SecurityHeaderTransport
+	req.Header.Set(HeaderSource, "ext-tampered")
+	return func(resp *http.Response, err error) {
+		h.postCalled = true
+	}
+}
+
+func TestExtensionInterceptor_ExecutionOrder(t *testing.T) {
+	var receivedHeaders http.Header
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		receivedHeaders = r.Header.Clone()
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	ic := &headerCapturingInterceptor{}
+	exttransport.Register(&stubTransportProvider{interceptor: ic})
+	t.Cleanup(func() { exttransport.Register(nil) })
+
+	// Use HTTP transport chain (has SecurityHeaderTransport)
+	var base http.RoundTripper = http.DefaultTransport
+	base = &RetryTransport{Base: base}
+	base = &SecurityHeaderTransport{Base: base}
+	transport := wrapWithExtension(base)
+	client := &http.Client{Transport: transport}
+
+	req, _ := http.NewRequest("GET", srv.URL, nil)
+	resp, err := client.Do(req)
+	if err != nil {
+		t.Fatalf("request failed: %v", err)
+	}
+	resp.Body.Close()
+
+	// PreRoundTrip was called
+	if !ic.preCalled {
+		t.Fatal("PreRoundTrip was not called")
+	}
+	// PostRoundTrip (closure) was called
+	if !ic.postCalled {
+		t.Fatal("PostRoundTrip closure was not called")
+	}
+	// Custom header set by extension survives (no built-in override)
+	if got := receivedHeaders.Get("X-Custom-Trace"); got != "ext-trace-123" {
+		t.Fatalf("X-Custom-Trace = %q, want %q", got, "ext-trace-123")
+	}
+	// Security header overridden by extension is restored by SecurityHeaderTransport
+	if got := receivedHeaders.Get(HeaderSource); got != SourceValue {
+		t.Fatalf("%s = %q, want %q (built-in should override extension)", HeaderSource, got, SourceValue)
+	}
+}
+
+// buildTamperingInterceptor tries to delete and spoof X-Cli-Build via
+// PreRoundTrip. The SDK chain's BuildHeaderTransport must restore the real
+// value before the request leaves the process.
+type buildTamperingInterceptor struct{}
+
+func (buildTamperingInterceptor) PreRoundTrip(req *http.Request) func(*http.Response, error) {
+	req.Header.Del(HeaderBuild)
+	req.Header.Set(HeaderBuild, "ext-tampered-build")
+	return nil
+}
+
+// TestBuildHeaderTransport_SDKChain_OverridesTamperedHeader verifies that the
+// X-Cli-Build header is force-written by BuildHeaderTransport in the SDK
+// transport chain, even when an extension tries to delete or spoof it. This
+// closes the gap where the SDK chain had no equivalent of
+// SecurityHeaderTransport (see design doc §3.3.3).
+func TestBuildHeaderTransport_SDKChain_OverridesTamperedHeader(t *testing.T) {
+	var receivedBuild string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		receivedBuild = r.Header.Get(HeaderBuild)
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	exttransport.Register(&stubTransportProvider{interceptor: buildTamperingInterceptor{}})
+	t.Cleanup(func() { exttransport.Register(nil) })
+
+	// Replicate the SDK chain layering used by buildSDKTransport.
+	var base http.RoundTripper = http.DefaultTransport
+	base = &RetryTransport{Base: base}
+	base = &UserAgentTransport{Base: base}
+	base = &BuildHeaderTransport{Base: base}
+	transport := wrapWithExtension(base)
+	client := &http.Client{Transport: transport}
+
+	req, _ := http.NewRequest("GET", srv.URL, nil)
+	resp, err := client.Do(req)
+	if err != nil {
+		t.Fatalf("request failed: %v", err)
+	}
+	resp.Body.Close()
+
+	if receivedBuild == "ext-tampered-build" {
+		t.Fatalf("%s = %q, extension tampering leaked to network", HeaderBuild, receivedBuild)
+	}
+	want := DetectBuildKind()
+	if receivedBuild != want {
+		t.Fatalf("%s = %q, want %q", HeaderBuild, receivedBuild, want)
+	}
+}
+
+// TestBuildHeaderTransport_OverridesEvenWithoutTamper verifies that even if
+// no extension is registered, BuildHeaderTransport writes X-Cli-Build.
+func TestBuildHeaderTransport_OverridesEvenWithoutTamper(t *testing.T) {
+	var receivedBuild string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		receivedBuild = r.Header.Get(HeaderBuild)
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	transport := &BuildHeaderTransport{Base: http.DefaultTransport}
+	client := &http.Client{Transport: transport}
+
+	req, _ := http.NewRequest("GET", srv.URL, nil)
+	resp, err := client.Do(req)
+	if err != nil {
+		t.Fatalf("request failed: %v", err)
+	}
+	resp.Body.Close()
+
+	if receivedBuild == "" {
+		t.Fatalf("%s header missing, BuildHeaderTransport did not inject", HeaderBuild)
+	}
+	want := DetectBuildKind()
+	if receivedBuild != want {
+		t.Fatalf("%s = %q, want %q", HeaderBuild, receivedBuild, want)
+	}
+}
+
+// TestBuildHeaderTransport_NilBase_UsesFallback verifies that when Base is nil,
+// the transport still sets X-Cli-Build and routes the request through
+// util.FallbackTransport rather than panicking. This covers the fallback
+// branch in RoundTrip that is otherwise unreachable with a non-nil Base.
+func TestBuildHeaderTransport_NilBase_UsesFallback(t *testing.T) {
+	var receivedBuild string
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		receivedBuild = r.Header.Get(HeaderBuild)
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	transport := &BuildHeaderTransport{Base: nil}
+	client := &http.Client{Transport: transport}
+
+	req, _ := http.NewRequest("GET", srv.URL, nil)
+	resp, err := client.Do(req)
+	if err != nil {
+		t.Fatalf("request via nil-Base transport failed: %v", err)
+	}
+	resp.Body.Close()
+
+	want := DetectBuildKind()
+	if receivedBuild != want {
+		t.Fatalf("%s = %q, want %q (header must be set even on nil-Base path)",
+			HeaderBuild, receivedBuild, want)
+	}
+}
+
+// interceptorFunc adapts a function to exttransport.Interceptor.
+type interceptorFunc func(*http.Request) func(*http.Response, error)
+
+func (f interceptorFunc) PreRoundTrip(req *http.Request) func(*http.Response, error) { return f(req) }
+
+func TestExtensionInterceptor_ContextTamperPrevented(t *testing.T) {
+	type ctxKeyType string
+	const testKey ctxKeyType = "original"
+
+	srv := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	}))
+	defer srv.Close()
+
+	var ctxValue any
+
+	// Use a custom transport that captures the context value seen by the built-in chain
+	capturer := roundTripFunc(func(req *http.Request) (*http.Response, error) {
+		ctxValue = req.Context().Value(testKey)
+		return http.DefaultTransport.RoundTrip(req)
+	})
+
+	// Interceptor that tries to tamper with context
+	tamperIC := interceptorFunc(func(req *http.Request) func(*http.Response, error) {
+		// Try to replace context with a new one
+		*req = *req.WithContext(context.WithValue(req.Context(), testKey, "tampered"))
+		return nil
+	})
+
+	mid := &extensionMiddleware{Base: capturer, Ext: tamperIC}
+
+	origCtx := context.WithValue(context.Background(), testKey, "original")
+	req, _ := http.NewRequestWithContext(origCtx, "GET", srv.URL, nil)
+	resp, err := mid.RoundTrip(req)
+	if err != nil {
+		t.Fatalf("request failed: %v", err)
+	}
+	resp.Body.Close()
+
+	// Built-in chain should see original context, not tampered
+	if ctxValue != "original" {
+		t.Fatalf("built-in chain saw context value %q, want %q", ctxValue, "original")
+	}
+}
+
+// ---------------------------------------------------------------------------
+// extensionMiddleware — PreRoundTripE abort path
+// ---------------------------------------------------------------------------
+
+// abortingInterceptor implements exttransport.AbortableInterceptor and
+// records invocation of the pre and post hooks. These middleware tests only
+// assert middleware-level integration; pure *AbortError behavior
+// (Error/Unwrap/Is/As) is covered in extension/transport/errors_test.go.
+type abortingInterceptor struct {
+	reason     error // if non-nil, PreRoundTripE returns this to abort
+	nilPost    bool  // if true, PreRoundTripE returns a nil post func
+	preECalled bool
+	postCalled bool
+	postResp   *http.Response
+	postErr    error
+}
+
+// PreRoundTrip is a no-op that satisfies the legacy Interceptor method; the
+// middleware never calls it when PreRoundTripE is present.
+func (*abortingInterceptor) PreRoundTrip(*http.Request) func(*http.Response, error) {
+	return nil
+}
+
+func (a *abortingInterceptor) PreRoundTripE(req *http.Request) (func(*http.Response, error), error) {
+	a.preECalled = true
+	if a.nilPost {
+		return nil, a.reason
+	}
+	return func(resp *http.Response, err error) {
+		a.postCalled = true
+		a.postResp = resp
+		a.postErr = err
+	}, a.reason
+}
+
+func TestExtensionMiddleware_PreRoundTripEAbort(t *testing.T) {
+	innerErr := errors.New("denied by policy")
+
+	t.Run("skips base and wires AbortError fields", func(t *testing.T) {
+		ic := &abortingInterceptor{reason: innerErr}
+		baseCalls := 0
+		base := roundTripFunc(func(*http.Request) (*http.Response, error) {
+			baseCalls++
+			return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}, nil
+		})
+
+		mid := &extensionMiddleware{Base: base, Ext: ic, ExtName: "stub"}
+		req, _ := http.NewRequest("GET", "http://example.invalid/", nil)
+		resp, err := mid.RoundTrip(req)
+
+		if resp != nil {
+			t.Fatalf("resp = %v, want nil on abort", resp)
+		}
+		if baseCalls != 0 {
+			t.Fatalf("base RoundTrip called %d times on abort, want 0", baseCalls)
+		}
+		if !ic.preECalled {
+			t.Fatal("PreRoundTripE was not called")
+		}
+
+		var aErr *exttransport.AbortError
+		if !errors.As(err, &aErr) {
+			t.Fatalf("errors.As(*AbortError) = false, err = %v (%T)", err, err)
+		}
+		if aErr.Extension != "stub" || aErr.Reason != innerErr {
+			t.Fatalf("AbortError = %+v, want {Extension:stub Reason:%v}", aErr, innerErr)
+		}
+
+		// Post must see the original inner err, not the *AbortError wrapper.
+		if !ic.postCalled {
+			t.Fatal("post hook was not called on abort")
+		}
+		if ic.postResp != nil {
+			t.Fatalf("post resp = %v, want nil", ic.postResp)
+		}
+		if ic.postErr != innerErr {
+			t.Fatalf("post err = %v, want original inner err %v", ic.postErr, innerErr)
+		}
+	})
+
+	t.Run("nil post still returns AbortError", func(t *testing.T) {
+		ic := &abortingInterceptor{reason: innerErr, nilPost: true}
+		base := roundTripFunc(func(*http.Request) (*http.Response, error) {
+			t.Fatal("base must not be called on abort")
+			return nil, nil
+		})
+
+		mid := &extensionMiddleware{Base: base, Ext: ic, ExtName: "stub"}
+		req, _ := http.NewRequest("GET", "http://example.invalid/", nil)
+		_, err := mid.RoundTrip(req)
+
+		var aErr *exttransport.AbortError
+		if !errors.As(err, &aErr) {
+			t.Fatalf("errors.As(*AbortError) = false, err = %v", err)
+		}
+	})
+}
+
+func TestExtensionMiddleware_PreRoundTripEHappyPath(t *testing.T) {
+	ic := &abortingInterceptor{} // reason == nil → no abort
+	baseCalls := 0
+	base := roundTripFunc(func(*http.Request) (*http.Response, error) {
+		baseCalls++
+		return &http.Response{StatusCode: http.StatusOK, Body: http.NoBody}, nil
+	})
+
+	mid := &extensionMiddleware{Base: base, Ext: ic, ExtName: "stub"}
+	req, _ := http.NewRequest("GET", "http://example.invalid/", nil)
+	resp, err := mid.RoundTrip(req)
+	if err != nil {
+		t.Fatalf("happy path returned err: %v", err)
+	}
+	if resp == nil || resp.StatusCode != http.StatusOK {
+		t.Fatalf("resp = %v, want 200", resp)
+	}
+	if baseCalls != 1 {
+		t.Fatalf("base RoundTrip called %d times, want 1", baseCalls)
+	}
+	if !ic.preECalled {
+		t.Fatal("PreRoundTripE was not called")
+	}
+	if !ic.postCalled || ic.postErr != nil {
+		t.Fatalf("post hook not called or err != nil: called=%v err=%v", ic.postCalled, ic.postErr)
+	}
+}

internal/core/config.go

@@ -163,6 +163,16 @@ type CliConfig struct {
 	SupportedIdentities uint8 `json:"-"` // bitflag: 1=user, 2=bot; set by credential provider
 }
 
+// identityBotBit is the bit flag for bot identity in SupportedIdentities.
+// Must match extension/credential.SupportsBot.
+const identityBotBit uint8 = 1 << 1
+
+// CanBot reports whether the current credential context supports bot identity.
+// Returns true when SupportedIdentities is unset (0, unknown) or includes the bot bit.
+func (c *CliConfig) CanBot() bool {
+	return c.SupportedIdentities == 0 || c.SupportedIdentities&identityBotBit != 0
+}
+
 // GetConfigDir returns the config directory path.
 // If the home directory cannot be determined, it falls back to a relative path
 // and prints a warning to stderr.

internal/core/config_test.go

@@ -187,3 +187,24 @@ func TestResolveConfigFromMulti_DoesNotUseEnvProfileFallback(t *testing.T) {
 		t.Fatalf("ResolveConfigFromMulti() profile = %q, want %q", cfg.ProfileName, "active")
 	}
 }
+
+func TestCliConfig_CanBot(t *testing.T) {
+	tests := []struct {
+		name                string
+		supportedIdentities uint8
+		want                bool
+	}{
+		{"unset (0) defaults to true", 0, true},
+		{"user only", 1, false},
+		{"bot only", 2, true},
+		{"both", 3, true},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			cfg := &CliConfig{SupportedIdentities: tt.supportedIdentities}
+			if got := cfg.CanBot(); got != tt.want {
+				t.Errorf("CanBot() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

internal/credential/default_provider.go

@@ -21,11 +21,14 @@ import (
 
 // DefaultAccountProvider resolves account from config.json via keychain.
 type DefaultAccountProvider struct {
-	keychain keychain.KeychainAccess
+	keychain func() keychain.KeychainAccess
 	profile  string
 }
 
-func NewDefaultAccountProvider(kc keychain.KeychainAccess, profile string) *DefaultAccountProvider {
+func NewDefaultAccountProvider(kc func() keychain.KeychainAccess, profile string) *DefaultAccountProvider {
+	if kc == nil {
+		kc = keychain.Default
+	}
 	return &DefaultAccountProvider{keychain: kc, profile: profile}
 }
 
@@ -36,7 +39,7 @@ func (p *DefaultAccountProvider) ResolveAccount(ctx context.Context) (*Account,
 		return nil, &core.ConfigError{Code: 2, Type: "config", Message: "not configured", Hint: "run `lark-cli config init --new` in the background. It blocks and outputs a verification URL — retrieve the URL and open it in a browser to complete setup."}
 	}
 
-	cfg, err := core.ResolveConfigFromMulti(multi, p.keychain, p.profile)
+	cfg, err := core.ResolveConfigFromMulti(multi, p.keychain(), p.profile)
 	if err != nil {
 		return nil, err
 	}

internal/credential/integration_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/larksuite/cli/internal/core"
 	"github.com/larksuite/cli/internal/credential"
 	"github.com/larksuite/cli/internal/envvars"
+	"github.com/larksuite/cli/internal/keychain"
 )
 
 type noopKC struct{}
@@ -99,7 +100,7 @@ func TestFullChain_ConfigStrictMode(t *testing.T) {
 	}
 
 	ep := &envprovider.Provider{}
-	defaultAcct := credential.NewDefaultAccountProvider(&noopKC{}, "")
+	defaultAcct := credential.NewDefaultAccountProvider(func() keychain.KeychainAccess { return &noopKC{} }, "")
 
 	cp := credential.NewCredentialProvider(
 		[]extcred.Provider{ep},

internal/envvars/envvars.go

@@ -11,4 +11,8 @@ const (
 	CliTenantAccessToken = "LARKSUITE_CLI_TENANT_ACCESS_TOKEN"
 	CliDefaultAs         = "LARKSUITE_CLI_DEFAULT_AS"
 	CliStrictMode        = "LARKSUITE_CLI_STRICT_MODE"
+
+	// Sidecar proxy (auth proxy mode)
+	CliAuthProxy = "LARKSUITE_CLI_AUTH_PROXY" // sidecar HTTP address, e.g. "http://127.0.0.1:16384"
+	CliProxyKey  = "LARKSUITE_CLI_PROXY_KEY"  // HMAC signing key shared with sidecar
 )

internal/keychain/keychain.go

@@ -36,10 +36,10 @@ func wrapError(op string, err error) error {
 	}
 
 	msg := fmt.Sprintf("keychain %s failed: %v", op, err)
-	hint := "Check if the OS keychain/credential manager is locked or accessible. If running inside a sandbox or CI environment, please ensure the process has the necessary permissions to access the keychain."
+	hint := "Check if the OS keychain/credential manager is locked or accessible. If running inside a sandbox or CI environment, please ensure the process has the necessary permissions to access the keychain, you can try running this outside the sandbox."
 
 	if errors.Is(err, errNotInitialized) {
-		hint = "The keychain master key may have been cleaned up or deleted. Please reconfigure the CLI by running `lark-cli config init`."
+		hint = "The keychain master key may have been cleaned up or deleted. If running inside a sandbox or CI environment, please ensure the process has the necessary permissions to access the keychain, you can try running this outside the sandbox. Otherwise, please reconfigure the CLI by running lark-cli config init."
 	}
 
 	func() {

internal/output/lark_errors.go

@@ -33,6 +33,22 @@ const (
 	LarkErrRefreshRevoked     = 20064 // refresh_token revoked
 	LarkErrRefreshAlreadyUsed = 20073 // refresh_token already consumed (single-use rotation)
 	LarkErrRefreshServerError = 20050 // refresh endpoint server-side error, retryable
+
+	// Drive shortcut / cross-space constraints.
+	LarkErrDriveResourceContention = 1061045 // resource contention occurred, please retry
+	LarkErrDriveCrossTenantUnit    = 1064510 // cross tenant and unit not support
+	LarkErrDriveCrossBrand         = 1064511 // cross brand not support
+
+	// Sheets float image: width/height/offset out of range or invalid.
+	LarkErrSheetsFloatImageInvalidDims = 1310246
+
+	// Drive permission apply: per-user-per-document submission limit (5/day) reached.
+	LarkErrDrivePermApplyRateLimit = 1063006
+	// Drive permission apply: request is not applicable for this document
+	// (e.g. the document is configured to disallow access requests, or the
+	// caller already holds the requested permission, or the target type does
+	// not accept apply operations).
+	LarkErrDrivePermApplyNotApplicable = 1063007
 )
 
 // ClassifyLarkError maps a Lark API error code + message to (exitCode, errType, hint).
@@ -60,6 +76,28 @@ func ClassifyLarkError(code int, msg string) (int, string, string) {
 	// rate limit
 	case LarkErrRateLimit:
 		return ExitAPI, "rate_limit", "please try again later"
+
+	// drive-specific constraints that benefit from actionable hints
+	case LarkErrDriveResourceContention:
+		return ExitAPI, "conflict", "please retry later and avoid concurrent duplicate requests"
+	case LarkErrDriveCrossTenantUnit:
+		return ExitAPI, "cross_tenant_unit", "operate on source and target within the same tenant and region/unit"
+	case LarkErrDriveCrossBrand:
+		return ExitAPI, "cross_brand", "operate on source and target within the same brand environment"
+
+	// sheets-specific constraints that benefit from actionable hints
+	case LarkErrSheetsFloatImageInvalidDims:
+		return ExitAPI, "invalid_params",
+			"check --width / --height / --offset-x / --offset-y: " +
+				"width/height must be >= 20 px; offsets must be >= 0 and less than the anchor cell's width/height"
+
+	// drive permission-apply specific guidance
+	case LarkErrDrivePermApplyRateLimit:
+		return ExitAPI, "rate_limit",
+			"permission-apply quota reached: each user may request access on the same document at most 5 times per day; wait or ask the owner directly"
+	case LarkErrDrivePermApplyNotApplicable:
+		return ExitAPI, "invalid_params",
+			"this document does not accept a permission-apply request (common causes: the document is configured to disallow access requests, the caller already holds the permission, or the target type does not support apply); contact the owner directly"
 	}
 
 	return ExitAPI, "api_error", ""

internal/output/lark_errors_test.go

@@ -0,0 +1,85 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package output
+
+import (
+	"strings"
+	"testing"
+)
+
+// TestClassifyLarkError_DriveCreateShortcutConstraints verifies known Drive shortcut errors map to actionable hints.
+func TestClassifyLarkError_DriveCreateShortcutConstraints(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		name         string
+		code         int
+		wantExitCode int
+		wantType     string
+		wantHint     string
+	}{
+		{
+			name:         "resource contention",
+			code:         LarkErrDriveResourceContention,
+			wantExitCode: ExitAPI,
+			wantType:     "conflict",
+			wantHint:     "avoid concurrent duplicate requests",
+		},
+		{
+			name:         "cross tenant unit",
+			code:         LarkErrDriveCrossTenantUnit,
+			wantExitCode: ExitAPI,
+			wantType:     "cross_tenant_unit",
+			wantHint:     "same tenant and region/unit",
+		},
+		{
+			name:         "cross brand",
+			code:         LarkErrDriveCrossBrand,
+			wantExitCode: ExitAPI,
+			wantType:     "cross_brand",
+			wantHint:     "same brand environment",
+		},
+		{
+			name:         "sheets float image invalid dims",
+			code:         LarkErrSheetsFloatImageInvalidDims,
+			wantExitCode: ExitAPI,
+			wantType:     "invalid_params",
+			wantHint:     "--width / --height / --offset-x / --offset-y",
+		},
+		{
+			name:         "drive permission apply rate limit",
+			code:         LarkErrDrivePermApplyRateLimit,
+			wantExitCode: ExitAPI,
+			wantType:     "rate_limit",
+			wantHint:     "5 times per day",
+		},
+		{
+			name:         "drive permission apply not applicable",
+			code:         LarkErrDrivePermApplyNotApplicable,
+			wantExitCode: ExitAPI,
+			wantType:     "invalid_params",
+			wantHint:     "does not accept a permission-apply request",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			t.Parallel()
+
+			gotExitCode, gotType, gotHint := ClassifyLarkError(tt.code, "raw msg")
+			if gotExitCode != tt.wantExitCode {
+				t.Fatalf("exitCode=%d, want %d", gotExitCode, tt.wantExitCode)
+			}
+			if gotType != tt.wantType {
+				t.Fatalf("type=%q, want %q", gotType, tt.wantType)
+			}
+			if gotHint == "" {
+				t.Fatal("expected non-empty hint")
+			}
+			if !strings.Contains(gotHint, tt.wantHint) {
+				t.Fatalf("hint=%q, want substring %q", gotHint, tt.wantHint)
+			}
+		})
+	}
+}

internal/registry/registry_test.go

@@ -564,3 +564,54 @@ func TestCollectScopesForProjects_NonexistentProject(t *testing.T) {
 		t.Errorf("expected empty scopes for nonexistent project, got %d", len(scopes))
 	}
 }
+
+// --- auth_domain functions ---
+
+func TestGetAuthDomain_Configured(t *testing.T) {
+	// whiteboard has auth_domain: "docs" in service_descriptions.json
+	if got := GetAuthDomain("whiteboard"); got != "docs" {
+		t.Errorf("GetAuthDomain(whiteboard) = %q, want %q", got, "docs")
+	}
+}
+
+func TestGetAuthDomain_NotConfigured(t *testing.T) {
+	if got := GetAuthDomain("calendar"); got != "" {
+		t.Errorf("GetAuthDomain(calendar) = %q, want empty", got)
+	}
+}
+
+func TestGetAuthDomain_Unknown(t *testing.T) {
+	if got := GetAuthDomain("nonexistent_xyz"); got != "" {
+		t.Errorf("GetAuthDomain(nonexistent_xyz) = %q, want empty", got)
+	}
+}
+
+func TestHasAuthDomain(t *testing.T) {
+	if !HasAuthDomain("whiteboard") {
+		t.Error("HasAuthDomain(whiteboard) = false, want true")
+	}
+	if HasAuthDomain("calendar") {
+		t.Error("HasAuthDomain(calendar) = true, want false")
+	}
+}
+
+func TestGetAuthChildren(t *testing.T) {
+	children := GetAuthChildren("docs")
+	found := false
+	for _, c := range children {
+		if c == "whiteboard" {
+			found = true
+			break
+		}
+	}
+	if !found {
+		t.Errorf("GetAuthChildren(docs) = %v, want to contain 'whiteboard'", children)
+	}
+}
+
+func TestGetAuthChildren_NoChildren(t *testing.T) {
+	children := GetAuthChildren("calendar")
+	if len(children) != 0 {
+		t.Errorf("GetAuthChildren(calendar) = %v, want empty", children)
+	}
+}

internal/registry/scope_overrides.json

@@ -4,8 +4,7 @@
     "im:message:send_as_bot": 1,
     "calendar:calendar:read": 70,
     "calendar:calendar:readonly": 1,
-    "sheets:spreadsheet:write_only": 45,
-    "docs:document.comment:delete": 60,
+    "sheets:spreadsheet:write_only": 60,
     "drive:drive:readonly": 1,
     "docs:doc:readonly": 1,
     "sheets:spreadsheet:readonly": 1,

internal/registry/service_desc.go

@@ -19,8 +19,9 @@ type serviceDescLocale struct {
 
 // serviceDescEntry holds bilingual descriptions for a service domain.
 type serviceDescEntry struct {
-	En serviceDescLocale `json:"en"`
-	Zh serviceDescLocale `json:"zh"`
+	En         serviceDescLocale `json:"en"`
+	Zh         serviceDescLocale `json:"zh"`
+	AuthDomain string            `json:"auth_domain,omitempty"`
 }
 
 var serviceDescMap map[string]serviceDescEntry
@@ -76,3 +77,31 @@ func GetServiceDetailDescription(name, lang string) string {
 	}
 	return loc.Description
 }
+
+// GetAuthDomain returns the auth_domain for a service, or "" if not set.
+// When auth_domain is set, the service's scopes are collected under the
+// parent domain during auth login.
+func GetAuthDomain(service string) string {
+	m := loadServiceDescriptions()
+	if entry, ok := m[service]; ok {
+		return entry.AuthDomain
+	}
+	return ""
+}
+
+// HasAuthDomain reports whether the service has an auth_domain configured.
+func HasAuthDomain(service string) bool {
+	return GetAuthDomain(service) != ""
+}
+
+// GetAuthChildren returns all service names whose auth_domain equals parent.
+func GetAuthChildren(parent string) []string {
+	m := loadServiceDescriptions()
+	var children []string
+	for name, entry := range m {
+		if entry.AuthDomain == parent {
+			children = append(children, name)
+		}
+	}
+	return children
+}

internal/registry/service_descriptions.json

@@ -43,6 +43,10 @@
     "en": { "title": "Sheets", "description": "Spreadsheet operations" },
     "zh": { "title": "电子表格", "description": "电子表格操作" }
   },
+  "slides": {
+    "en": { "title": "Slides", "description": "Create and manage presentations, read content, and add or remove slides" },
+    "zh": { "title": "幻灯片", "description": "创建和管理演示文稿、读取内容，以及新增或删除幻灯片页面" }
+  },
   "task": {
     "en": { "title": "Task", "description": "Task, task list, and subtask management" },
     "zh": { "title": "任务", "description": "任务、清单、子任务管理" }
@@ -53,10 +57,15 @@
   },
   "whiteboard": {
     "en": { "title": "Whiteboard", "description": "Create and edit boards" },
-    "zh": { "title": "画板", "description": "画板创建、编辑" }
+    "zh": { "title": "画板", "description": "画板创建、编辑" },
+    "auth_domain": "docs"
   },
   "wiki": {
     "en": { "title": "Wiki", "description": "Wiki space and node management" },
     "zh": { "title": "知识库", "description": "知识空间、节点管理" }
+  },
+  "okr": {
+    "en": { "title": "OKR", "description": "Lark OKR objectives, key results, alignments, indicators" },
+    "zh": { "title": "OKR", "description": "飞书 OKR 目标、关键结果、对齐、量化指标" }
   }
 }

internal/selfupdate/updater.go

@@ -0,0 +1,240 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+// Package selfupdate handles installation detection, npm-based updates,
+// skills updates, and platform-specific binary replacement for the CLI
+// self-update flow.
+package selfupdate
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os/exec"
+	"strings"
+	"time"
+
+	"github.com/larksuite/cli/internal/vfs"
+)
+
+// InstallMethod describes how the CLI was installed.
+type InstallMethod int
+
+const (
+	InstallNpm InstallMethod = iota
+	InstallManual
+)
+
+const (
+	NpmPackage = "@larksuite/cli"
+)
+
+const (
+	npmInstallTimeout   = 10 * time.Minute
+	skillsUpdateTimeout = 2 * time.Minute
+	verifyTimeout       = 10 * time.Second
+)
+
+// DetectResult holds installation detection results.
+type DetectResult struct {
+	Method       InstallMethod
+	ResolvedPath string
+	NpmAvailable bool
+}
+
+// CanAutoUpdate returns true if the CLI can update itself automatically.
+func (d DetectResult) CanAutoUpdate() bool {
+	return d.Method == InstallNpm && d.NpmAvailable
+}
+
+// ManualReason returns a human-readable explanation of why auto-update is unavailable.
+func (d DetectResult) ManualReason() string {
+	if d.Method == InstallNpm && !d.NpmAvailable {
+		return "installed via npm, but npm is not available in PATH"
+	}
+	return "not installed via npm"
+}
+
+// NpmResult holds the result of an npm install or skills update execution.
+type NpmResult struct {
+	Stdout bytes.Buffer
+	Stderr bytes.Buffer
+	Err    error
+}
+
+// CombinedOutput returns stdout + stderr concatenated.
+func (r *NpmResult) CombinedOutput() string {
+	return r.Stdout.String() + r.Stderr.String()
+}
+
+// Updater manages self-update operations.
+// Platform-specific methods (PrepareSelfReplace, CleanupStaleFiles)
+// are in updater_unix.go and updater_windows.go.
+//
+// Override DetectOverride / NpmInstallOverride / SkillsUpdateOverride / VerifyOverride
+// / RestoreAvailableOverride for testing.
+type Updater struct {
+	DetectOverride           func() DetectResult
+	NpmInstallOverride       func(version string) *NpmResult
+	SkillsUpdateOverride     func() *NpmResult
+	VerifyOverride           func(expectedVersion string) error
+	RestoreAvailableOverride func() bool
+
+	// backupCreated is set to true by PrepareSelfReplace (Windows) when the
+	// running binary is successfully renamed to .old. Used by
+	// CanRestorePreviousVersion to report whether rollback is possible.
+	backupCreated bool
+}
+
+// New creates an Updater with default (real) behavior.
+func New() *Updater { return &Updater{} }
+
+// DetectInstallMethod determines how the CLI was installed and whether
+// npm is available for auto-update.
+func (u *Updater) DetectInstallMethod() DetectResult {
+	if u.DetectOverride != nil {
+		return u.DetectOverride()
+	}
+	exe, err := vfs.Executable()
+	if err != nil {
+		return DetectResult{Method: InstallManual}
+	}
+	resolved, err := vfs.EvalSymlinks(exe)
+	if err != nil {
+		return DetectResult{Method: InstallManual, ResolvedPath: exe}
+	}
+
+	method := InstallManual
+	if strings.Contains(resolved, "node_modules") {
+		method = InstallNpm
+	}
+
+	npmAvailable := false
+	if method == InstallNpm {
+		if _, err := exec.LookPath("npm"); err == nil {
+			npmAvailable = true
+		}
+	}
+
+	return DetectResult{
+		Method:       method,
+		ResolvedPath: resolved,
+		NpmAvailable: npmAvailable,
+	}
+}
+
+// RunNpmInstall executes npm install -g @larksuite/cli@<version>.
+func (u *Updater) RunNpmInstall(version string) *NpmResult {
+	if u.NpmInstallOverride != nil {
+		return u.NpmInstallOverride(version)
+	}
+	r := &NpmResult{}
+	npmPath, err := exec.LookPath("npm")
+	if err != nil {
+		r.Err = fmt.Errorf("npm not found in PATH: %w", err)
+		return r
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), npmInstallTimeout)
+	defer cancel()
+	cmd := exec.CommandContext(ctx, npmPath, "install", "-g", NpmPackage+"@"+version)
+	cmd.Stdout = &r.Stdout
+	cmd.Stderr = &r.Stderr
+	r.Err = cmd.Run()
+	if ctx.Err() == context.DeadlineExceeded {
+		r.Err = fmt.Errorf("npm install timed out after %s", npmInstallTimeout)
+	}
+	return r
+}
+
+// RunSkillsUpdate installs skills, trying the .well-known source first and
+// falling back to the GitHub repo on failure or timeout.
+func (u *Updater) RunSkillsUpdate() *NpmResult {
+	if u.SkillsUpdateOverride != nil {
+		return u.SkillsUpdateOverride()
+	}
+	r := u.runSkillsAdd("https://open.feishu.cn")
+	if r.Err != nil {
+		r = u.runSkillsAdd("larksuite/cli")
+	}
+	return r
+}
+
+func (u *Updater) runSkillsAdd(source string) *NpmResult {
+	r := &NpmResult{}
+	npxPath, err := exec.LookPath("npx")
+	if err != nil {
+		r.Err = fmt.Errorf("npx not found in PATH: %w", err)
+		return r
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), skillsUpdateTimeout)
+	defer cancel()
+	cmd := exec.CommandContext(ctx, npxPath, "-y", "skills", "add", source, "-g", "-y")
+	cmd.Stdout = &r.Stdout
+	cmd.Stderr = &r.Stderr
+	r.Err = cmd.Run()
+	if ctx.Err() == context.DeadlineExceeded {
+		r.Err = fmt.Errorf("skills update timed out after %s", skillsUpdateTimeout)
+	}
+	return r
+}
+
+// VerifyBinary checks that the installed binary reports the expected version
+// by running "lark-cli --version" and comparing the version token exactly.
+// Output format is "lark-cli version X.Y.Z"; the last field is extracted and
+// compared against expectedVersion (both stripped of any "v" prefix).
+func (u *Updater) VerifyBinary(expectedVersion string) error {
+	if u.VerifyOverride != nil {
+		return u.VerifyOverride(expectedVersion)
+	}
+	// Prefer the current executable path (what the user actually launched).
+	// Use Executable() directly without EvalSymlinks — after npm install the
+	// symlink target may have changed, but the path itself is still valid for
+	// execution. Fall back to LookPath only if Executable() fails entirely.
+	exe, err := vfs.Executable()
+	if err != nil {
+		exe, err = exec.LookPath("lark-cli")
+		if err != nil {
+			return fmt.Errorf("cannot locate binary: %w", err)
+		}
+	}
+	ctx, cancel := context.WithTimeout(context.Background(), verifyTimeout)
+	defer cancel()
+	out, err := exec.CommandContext(ctx, exe, "--version").Output()
+	if ctx.Err() == context.DeadlineExceeded {
+		return fmt.Errorf("binary verification timed out after %s", verifyTimeout)
+	}
+	if err != nil {
+		return fmt.Errorf("binary not executable: %w", err)
+	}
+	fields := strings.Fields(strings.TrimSpace(string(out)))
+	if len(fields) == 0 {
+		return fmt.Errorf("empty version output")
+	}
+	actual := strings.TrimPrefix(fields[len(fields)-1], "v")
+	expected := strings.TrimPrefix(expectedVersion, "v")
+	if actual != expected {
+		return fmt.Errorf("expected version %s, got %q", expectedVersion, actual)
+	}
+	return nil
+}
+
+// Truncate returns the last maxLen runes of s.
+func Truncate(s string, maxLen int) string {
+	if maxLen <= 0 {
+		return ""
+	}
+	r := []rune(s)
+	if len(r) <= maxLen {
+		return s
+	}
+	return string(r[len(r)-maxLen:])
+}
+
+// resolveExe returns the resolved path of the current running binary.
+func (u *Updater) resolveExe() (string, error) {
+	exe, err := vfs.Executable()
+	if err != nil {
+		return "", err
+	}
+	return vfs.EvalSymlinks(exe)
+}

internal/selfupdate/updater_test.go

@@ -0,0 +1,89 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package selfupdate
+
+import (
+	"os"
+	"path/filepath"
+	"runtime"
+	"testing"
+
+	"github.com/larksuite/cli/internal/vfs"
+)
+
+type executableTestFS struct {
+	vfs.OsFs
+	exe string
+}
+
+func (f executableTestFS) Executable() (string, error) { return f.exe, nil }
+
+func TestResolveExe(t *testing.T) {
+	u := New()
+	p, err := u.resolveExe()
+	if err != nil {
+		t.Fatalf("resolveExe() error: %v", err)
+	}
+	if !filepath.IsAbs(p) {
+		t.Errorf("expected absolute path, got: %s", p)
+	}
+}
+
+func TestPrepareSelfReplace_ReturnsNoError(t *testing.T) {
+	u := New()
+	restore, err := u.PrepareSelfReplace()
+	if err != nil {
+		t.Fatalf("unexpected error: %v", err)
+	}
+	restore()
+}
+
+func TestCleanupStaleFiles_NoPanic(t *testing.T) {
+	u := New()
+	u.CleanupStaleFiles()
+}
+
+func TestVerifyBinaryChecksVersion(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("uses a POSIX shell script")
+	}
+
+	dir := t.TempDir()
+	exe := filepath.Join(dir, "lark-cli")
+	// Script prints version string matching real CLI format when --version is passed.
+	script := "#!/bin/sh\nif [ \"$1\" = \"--version\" ]; then echo \"lark-cli version 2.0.0\"; exit 0; fi\nexit 12\n"
+	if err := os.WriteFile(exe, []byte(script), 0755); err != nil {
+		t.Fatalf("write test binary: %v", err)
+	}
+
+	// Mock vfs.Executable to return our test script, matching VerifyBinary's
+	// primary lookup path. Also prepend to PATH for the LookPath fallback.
+	origFS := vfs.DefaultFS
+	vfs.DefaultFS = executableTestFS{OsFs: vfs.OsFs{}, exe: exe}
+	t.Cleanup(func() { vfs.DefaultFS = origFS })
+
+	origPath := os.Getenv("PATH")
+	t.Setenv("PATH", dir+string(os.PathListSeparator)+origPath)
+
+	// Matching version → success.
+	if err := New().VerifyBinary("2.0.0"); err != nil {
+		t.Fatalf("VerifyBinary(matching) error = %v, want nil", err)
+	}
+
+	// Mismatched version → error.
+	if err := New().VerifyBinary("3.0.0"); err == nil {
+		t.Fatal("VerifyBinary(mismatched) expected error, got nil")
+	}
+
+	// Substring of actual version must not match (e.g. "0.0" is in "2.0.0").
+	if err := New().VerifyBinary("0.0"); err == nil {
+		t.Fatal("VerifyBinary(substring) expected error, got nil")
+	}
+
+	// Version that is a prefix of actual must not match (e.g. "2.0.0" in "12.0.0").
+	// Binary reports "2.0.0", asking for "12.0.0" must fail.
+	if err := New().VerifyBinary("12.0.0"); err == nil {
+		t.Fatal("VerifyBinary(prefix-mismatch) expected error, got nil")
+	}
+}

internal/selfupdate/updater_unix.go

@@ -0,0 +1,24 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build !windows
+
+package selfupdate
+
+// PrepareSelfReplace is a no-op on Unix.
+// Unix allows overwriting a running executable via inode semantics.
+func (u *Updater) PrepareSelfReplace() (restore func(), err error) {
+	return func() {}, nil
+}
+
+// CleanupStaleFiles is a no-op on Unix (no .old files are created).
+func (u *Updater) CleanupStaleFiles() {}
+
+// CanRestorePreviousVersion reports whether PrepareSelfReplace created a
+// restorable backup for the current update attempt.
+func (u *Updater) CanRestorePreviousVersion() bool {
+	if u.RestoreAvailableOverride != nil {
+		return u.RestoreAvailableOverride()
+	}
+	return u.backupCreated
+}

internal/selfupdate/updater_windows.go

@@ -0,0 +1,87 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build windows
+
+package selfupdate
+
+import (
+	"fmt"
+
+	"github.com/larksuite/cli/internal/vfs"
+)
+
+// PrepareSelfReplace renames the running .exe to .old so that npm's
+// postinstall script can write the new binary without hitting EBUSY.
+// Returns a restore function that undoes the rename on failure.
+func (u *Updater) PrepareSelfReplace() (restore func(), err error) {
+	noop := func() {}
+
+	exe, err := u.resolveExe()
+	if err != nil {
+		return noop, nil // best-effort; don't block update
+	}
+
+	oldPath := exe + ".old"
+
+	// Clean up stale .old from a previous upgrade.
+	vfs.Remove(oldPath)
+
+	// Rename running.exe → running.exe.old (Windows allows rename of locked files).
+	if err := vfs.Rename(exe, oldPath); err != nil {
+		return noop, fmt.Errorf("cannot rename binary for update: %w", err)
+	}
+	u.backupCreated = true
+
+	// Restore: move .old back to the original path.
+	// Guard with Stat: run.js may have already recovered .old on its own
+	// during VerifyBinary; if .old is gone, skip to avoid deleting the
+	// only working binary.
+	// On any failure, clear backupCreated so CanRestorePreviousVersion
+	// reports the real outcome instead of claiming success.
+	restore = func() {
+		if _, err := vfs.Stat(oldPath); err != nil {
+			u.backupCreated = false
+			return
+		}
+		vfs.Remove(exe)
+		if err := vfs.Rename(oldPath, exe); err != nil {
+			u.backupCreated = false
+		}
+	}
+
+	return restore, nil
+}
+
+// CleanupStaleFiles removes leftover .old files from previous upgrades.
+// If the original binary is missing but .old exists (crash mid-update),
+// it restores the .old to recover the installation.
+func (u *Updater) CleanupStaleFiles() {
+	exe, err := u.resolveExe()
+	if err != nil {
+		return
+	}
+	oldPath := exe + ".old"
+
+	if _, err := vfs.Stat(oldPath); err != nil {
+		return // no .old file
+	}
+
+	if _, err := vfs.Stat(exe); err != nil {
+		// Original missing, .old exists — restore to recover.
+		vfs.Rename(oldPath, exe)
+		return
+	}
+
+	// Both exist — .old is stale, clean up.
+	vfs.Remove(oldPath)
+}
+
+// CanRestorePreviousVersion reports whether PrepareSelfReplace created a
+// restorable backup for the current update attempt.
+func (u *Updater) CanRestorePreviousVersion() bool {
+	if u.RestoreAvailableOverride != nil {
+		return u.RestoreAvailableOverride()
+	}
+	return u.backupCreated
+}

internal/update/update.go

@@ -61,7 +61,7 @@ func httpClient() *http.Client {
 	}
 	return &http.Client{
 		Timeout:   fetchTimeout,
-		Transport: util.NewBaseTransport(),
+		Transport: util.SharedTransport(),
 	}
 }
 
@@ -218,8 +218,8 @@ func fetchLatestVersion() (string, error) {
 // is considered newer — an unparseable local version is assumed outdated.
 // When a cannot be parsed, returns false (can't confirm it's newer).
 func IsNewer(a, b string) bool {
-	ap := ParseVersion(a)
-	bp := ParseVersion(b)
+	ap := parseVersionDetail(a)
+	bp := parseVersionDetail(b)
 	if ap == nil {
 		return false // can't confirm remote is newer
 	}
@@ -227,28 +227,59 @@ func IsNewer(a, b string) bool {
 		return true // local version unparseable → assume outdated
 	}
 	for i := 0; i < 3; i++ {
-		if ap[i] > bp[i] {
+		if ap.core[i] > bp.core[i] {
 			return true
 		}
-		if ap[i] < bp[i] {
+		if ap.core[i] < bp.core[i] {
 			return false
 		}
 	}
-	return false
+	return comparePrerelease(ap.prerelease, bp.prerelease) > 0
 }
 
 // ParseVersion parses "X.Y.Z" (with optional "v" prefix and pre-release suffix)
 // into [major, minor, patch]. Returns nil on invalid input.
 func ParseVersion(v string) []int {
+	parsed := parseVersionDetail(v)
+	if parsed == nil {
+		return nil
+	}
+	return []int{parsed.core[0], parsed.core[1], parsed.core[2]}
+}
+
+type parsedVersion struct {
+	core       [3]int
+	prerelease string
+}
+
+// validPrerelease matches semver pre-release identifiers (dot-separated).
+// Each identifier is either: "0", a non-zero-leading numeric, or alphanumeric with at least one letter/hyphen.
+// Rejects empty identifiers ("1.0.0-"), leading-zero numerics ("1.0.0-01"), etc.
+var validPrerelease = regexp.MustCompile(
+	`^(?:0|[1-9]\d*|[0-9]*[a-zA-Z-][0-9a-zA-Z-]*)` +
+		`(?:\.(?:0|[1-9]\d*|[0-9]*[a-zA-Z-][0-9a-zA-Z-]*))*$`)
+
+func parseVersionDetail(v string) *parsedVersion {
 	v = strings.TrimPrefix(v, "v")
+	if idx := strings.Index(v, "+"); idx >= 0 {
+		v = v[:idx]
+	}
+	prerelease := ""
+	if idx := strings.Index(v, "-"); idx >= 0 {
+		prerelease = v[idx+1:]
+		v = v[:idx]
+		if prerelease == "" || !validPrerelease.MatchString(prerelease) {
+			return nil
+		}
+	}
 	parts := strings.SplitN(v, ".", 3)
 	if len(parts) != 3 {
 		return nil
 	}
-	nums := make([]int, 3)
+	var nums [3]int
 	for i, p := range parts {
-		if idx := strings.IndexAny(p, "-+"); idx >= 0 {
-			p = p[:idx]
+		if len(p) > 1 && p[0] == '0' {
+			return nil // leading zero in core part (e.g. "01.0.0")
 		}
 		n, err := strconv.Atoi(p)
 		if err != nil {
@@ -256,5 +287,56 @@ func ParseVersion(v string) []int {
 		}
 		nums[i] = n
 	}
-	return nums
+	return &parsedVersion{core: nums, prerelease: prerelease}
+}
+
+func comparePrerelease(a, b string) int {
+	if a == "" && b == "" {
+		return 0
+	}
+	if a == "" {
+		return 1
+	}
+	if b == "" {
+		return -1
+	}
+	ap := strings.Split(a, ".")
+	bp := strings.Split(b, ".")
+	for i := 0; i < len(ap) && i < len(bp); i++ {
+		cmp := comparePrereleaseIdentifier(ap[i], bp[i])
+		if cmp != 0 {
+			return cmp
+		}
+	}
+	switch {
+	case len(ap) > len(bp):
+		return 1
+	case len(ap) < len(bp):
+		return -1
+	default:
+		return 0
+	}
+}
+
+func comparePrereleaseIdentifier(a, b string) int {
+	an, aErr := strconv.Atoi(a)
+	bn, bErr := strconv.Atoi(b)
+	aNumeric := aErr == nil
+	bNumeric := bErr == nil
+	switch {
+	case aNumeric && bNumeric:
+		if an > bn {
+			return 1
+		}
+		if an < bn {
+			return -1
+		}
+		return 0
+	case aNumeric:
+		return -1
+	case bNumeric:
+		return 1
+	default:
+		return strings.Compare(a, b)
+	}
 }

internal/update/update_test.go

@@ -56,6 +56,9 @@ func TestIsNewer(t *testing.T) {
 		{"1.0.0", "9b933f1", true},                  // bare commit hash → assume outdated
 		{"", "1.0.0", false},                        // empty remote → false
 		{"1.1.0", "v1.0.0-12-g9b933f1-dirty", true}, // git describe: 1.1.0 > 1.0.0
+		{"1.0.0", "1.0.0-rc.1", true},               // stable release > prerelease
+		{"1.0.0-rc.2", "1.0.0-rc.1", true},          // prerelease identifiers are ordered
+		{"1.0.0-rc.1", "1.0.0", false},              // prerelease < stable release
 	}
 	for _, tt := range tests {
 		got := IsNewer(tt.a, tt.b)
@@ -74,6 +77,16 @@ func TestParseVersion(t *testing.T) {
 		{"v1.2.3", []int{1, 2, 3}},
 		{"0.0.1", []int{0, 0, 1}},
 		{"1.0.0-beta.1", []int{1, 0, 0}},
+		{"1.0.0-rc.1", []int{1, 0, 0}},
+		{"1.0.0-0", []int{1, 0, 0}},
+		{"1.0.0+build.123", []int{1, 0, 0}},
+		{"1.0.0-beta.1+build", []int{1, 0, 0}},
+		{"1.0.0-", nil},        // empty pre-release
+		{"1.0.0-01", nil},      // leading zero in numeric pre-release
+		{"1.0.0-beta..1", nil}, // empty identifier between dots
+		{"01.0.0", nil},        // leading zero in major
+		{"1.00.0", nil},        // leading zero in minor
+		{"1.0.00", nil},        // leading zero in patch
 		{"DEV", nil},
 		{"", nil},
 		{"1.2", nil},

internal/util/proxy.go

@@ -72,31 +72,47 @@ func WarnIfProxied(w io.Writer) {
 	})
 }
 
-// NewBaseTransport creates an *http.Transport cloned from http.DefaultTransport.
-// If LARK_CLI_NO_PROXY is set, proxy support is disabled.
-// Each call returns a new instance; use FallbackTransport for a shared singleton.
-func NewBaseTransport() *http.Transport {
+// noProxyTransport is a proxy-disabled clone of http.DefaultTransport,
+// lazily built the first time LARK_CLI_NO_PROXY is observed set.
+var noProxyTransport = sync.OnceValue(func() *http.Transport {
 	def, ok := http.DefaultTransport.(*http.Transport)
 	if !ok {
 		return &http.Transport{}
 	}
 	t := def.Clone()
-	if os.Getenv(EnvNoProxy) != "" {
-		t.Proxy = nil
-	}
+	t.Proxy = nil
 	return t
-}
-
-// fallbackTransport is a lazily-initialized singleton used by transport
-// decorators when their Base field is nil, preserving connection pooling.
-var fallbackTransport = sync.OnceValue(func() *http.Transport {
-	return NewBaseTransport()
 })
 
-// FallbackTransport returns a shared *http.Transport singleton suitable for
-// use as a fallback when a transport decorator's Base is nil.
-// Unlike NewBaseTransport (which clones per call), this reuses a single
-// instance so that TCP connections and TLS sessions are pooled.
-func FallbackTransport() *http.Transport {
-	return fallbackTransport()
+// SharedTransport returns the base http.RoundTripper for CLI HTTP clients.
+//
+// By default it returns http.DefaultTransport — the stdlib-provided
+// process-wide singleton — so every HTTP client in the process shares one
+// TCP connection pool, TLS session cache, and HTTP/2 state. When
+// LARK_CLI_NO_PROXY is set it returns a separate proxy-disabled singleton
+// clone; LARK_CLI_NO_PROXY is checked on every call, but the clone is built
+// at most once.
+//
+// The returned RoundTripper MUST NOT be mutated. Callers that need a
+// customized transport should assert to *http.Transport and Clone() it.
+// Using a shared base is required so persistConn readLoop/writeLoop
+// goroutines are reused; cloning per call leaks them until IdleConnTimeout
+// (~90s) fires.
+func SharedTransport() http.RoundTripper {
+	if os.Getenv(EnvNoProxy) != "" {
+		return noProxyTransport()
+	}
+	return http.DefaultTransport
+}
+
+// FallbackTransport returns a shared *http.Transport singleton. It is a
+// thin wrapper over SharedTransport retained so modules that were already
+// on the leak-free singleton path (internal/auth, internal/cmdutil
+// transport decorators) do not have to migrate. New code should prefer
+// SharedTransport and treat the base as an http.RoundTripper.
+func FallbackTransport() *http.Transport {
+	if t, ok := SharedTransport().(*http.Transport); ok {
+		return t
+	}
+	return noProxyTransport()
 }

internal/util/proxy_test.go

@@ -28,19 +28,65 @@ func TestDetectProxyEnv(t *testing.T) {
 	}
 }
 
-func TestNewBaseTransport_Default(t *testing.T) {
+func TestSharedTransport_DefaultReturnsStdlibSingleton(t *testing.T) {
 	t.Setenv(EnvNoProxy, "")
-	tr := NewBaseTransport()
-	if tr.Proxy == nil {
-		t.Error("expected proxy func to be set when LARK_CLI_NO_PROXY is not set")
+	tr := SharedTransport()
+	if tr != http.DefaultTransport {
+		t.Error("SharedTransport should return http.DefaultTransport when LARK_CLI_NO_PROXY is unset")
 	}
 }
 
-func TestNewBaseTransport_NoProxy(t *testing.T) {
+func TestSharedTransport_NoProxyReturnsClone(t *testing.T) {
 	t.Setenv(EnvNoProxy, "1")
-	tr := NewBaseTransport()
-	if tr.Proxy != nil {
-		t.Error("expected proxy func to be nil when LARK_CLI_NO_PROXY=1")
+	tr := SharedTransport()
+	if tr == http.DefaultTransport {
+		t.Fatal("SharedTransport should return a clone, not DefaultTransport, when LARK_CLI_NO_PROXY is set")
+	}
+	ht, ok := tr.(*http.Transport)
+	if !ok {
+		t.Fatalf("expected *http.Transport, got %T", tr)
+	}
+	if ht.Proxy != nil {
+		t.Error("no-proxy transport should have Proxy == nil")
+	}
+}
+
+func TestSharedTransport_NoProxyIsCachedSingleton(t *testing.T) {
+	t.Setenv(EnvNoProxy, "1")
+	a := SharedTransport()
+	b := SharedTransport()
+	if a != b {
+		t.Error("repeated SharedTransport calls with LARK_CLI_NO_PROXY set must return the same instance")
+	}
+}
+
+func TestSharedTransport_EnvUnsetAfterSetFallsBackToDefault(t *testing.T) {
+	// Simulate a process that first runs with LARK_CLI_NO_PROXY=1 (populating
+	// the no-proxy singleton), then unsets it. Subsequent calls must return
+	// http.DefaultTransport, NOT the cached no-proxy clone.
+	t.Setenv(EnvNoProxy, "1")
+	noProxy := SharedTransport()
+	if noProxy == http.DefaultTransport {
+		t.Fatal("precondition: first call with env set should not return DefaultTransport")
+	}
+
+	t.Setenv(EnvNoProxy, "")
+	after := SharedTransport()
+	if after != http.DefaultTransport {
+		t.Errorf("after unsetting LARK_CLI_NO_PROXY, SharedTransport must return http.DefaultTransport, got %T (%p)", after, after)
+	}
+}
+
+func TestSharedTransport_NoProxyOverridesSystemProxy(t *testing.T) {
+	t.Setenv("HTTPS_PROXY", "http://should-be-ignored:8888")
+	t.Setenv(EnvNoProxy, "1")
+
+	ht, ok := SharedTransport().(*http.Transport)
+	if !ok {
+		t.Fatalf("expected *http.Transport, got %T", SharedTransport())
+	}
+	if ht.Proxy != nil {
+		t.Error("LARK_CLI_NO_PROXY should override system proxy settings")
 	}
 }
 
@@ -156,35 +202,3 @@ func TestWarnIfProxied_RedactsCredentials(t *testing.T) {
 		t.Errorf("warning should contain redacted proxy URL, got: %s", out)
 	}
 }
-
-func TestNewBaseTransport_IsHTTPTransport(t *testing.T) {
-	t.Setenv(EnvNoProxy, "")
-	tr := NewBaseTransport()
-
-	// Should be a valid *http.Transport that can be used
-	var rt http.RoundTripper = tr
-	_ = rt
-
-	// Verify it's not the same pointer as DefaultTransport (should be a clone)
-	if tr == http.DefaultTransport {
-		t.Error("NewBaseTransport should return a clone, not DefaultTransport itself")
-	}
-}
-
-func TestNewBaseTransport_RespectsNoProxyEnv(t *testing.T) {
-	// Simulate: user sets both system proxy and our disable flag
-	t.Setenv("HTTPS_PROXY", "http://should-be-ignored:8888")
-	t.Setenv(EnvNoProxy, "1")
-
-	tr := NewBaseTransport()
-	if tr.Proxy != nil {
-		t.Error("LARK_CLI_NO_PROXY should override system proxy settings")
-	}
-
-	// Clean up and verify proxy is restored
-	t.Setenv(EnvNoProxy, "")
-	tr2 := NewBaseTransport()
-	if tr2.Proxy == nil {
-		t.Error("proxy should be enabled when LARK_CLI_NO_PROXY is unset")
-	}
-}

internal/util/strings_test.go

@@ -0,0 +1,53 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package util
+
+import "testing"
+
+func TestTruncateStr(t *testing.T) {
+	tests := []struct {
+		name string
+		s    string
+		n    int
+		want string
+	}{
+		{"short string", "hello", 10, "hello"},
+		{"exact length", "hello", 5, "hello"},
+		{"truncate", "hello world", 5, "hello"},
+		{"empty", "", 5, ""},
+		{"zero limit", "hello", 0, ""},
+		{"CJK characters", "你好世界测试", 4, "你好世界"},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := TruncateStr(tt.s, tt.n); got != tt.want {
+				t.Errorf("TruncateStr(%q, %d) = %q, want %q", tt.s, tt.n, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestTruncateStrWithEllipsis(t *testing.T) {
+	tests := []struct {
+		name string
+		s    string
+		n    int
+		want string
+	}{
+		{"short string", "hello", 10, "hello"},
+		{"exact length", "hello", 5, "hello"},
+		{"truncate with ellipsis", "hello world", 8, "hello..."},
+		{"limit less than 3", "hello", 2, "he"},
+		{"limit equals 3", "hello world", 3, "..."},
+		{"empty", "", 5, ""},
+		{"CJK with ellipsis", "你好世界测试", 5, "你好..."},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := TruncateStrWithEllipsis(tt.s, tt.n); got != tt.want {
+				t.Errorf("TruncateStrWithEllipsis(%q, %d) = %q, want %q", tt.s, tt.n, got, tt.want)
+			}
+		})
+	}
+}

internal/vfs/default.go

@@ -31,3 +31,5 @@ func MkdirAll(path string, perm fs.FileMode) error     { return DefaultFS.MkdirA
 func ReadDir(name string) ([]os.DirEntry, error)       { return DefaultFS.ReadDir(name) }
 func Remove(name string) error                         { return DefaultFS.Remove(name) }
 func Rename(oldpath, newpath string) error             { return DefaultFS.Rename(oldpath, newpath) }
+func EvalSymlinks(path string) (string, error)         { return DefaultFS.EvalSymlinks(path) }
+func Executable() (string, error)                      { return DefaultFS.Executable() }

internal/vfs/fs.go

@@ -29,4 +29,8 @@ type FS interface {
 	ReadDir(name string) ([]os.DirEntry, error)
 	Remove(name string) error
 	Rename(oldpath, newpath string) error
+
+	// Path resolution
+	EvalSymlinks(path string) (string, error)
+	Executable() (string, error)
 }

internal/vfs/osfs.go

@@ -6,6 +6,7 @@ package vfs
 import (
 	"io/fs"
 	"os"
+	"path/filepath"
 )
 
 // OsFs delegates every method to the os standard library.
@@ -33,3 +34,7 @@ func (OsFs) MkdirAll(path string, perm fs.FileMode) error { return os.MkdirAll(p
 func (OsFs) ReadDir(name string) ([]os.DirEntry, error)   { return os.ReadDir(name) }
 func (OsFs) Remove(name string) error                     { return os.Remove(name) }
 func (OsFs) Rename(oldpath, newpath string) error         { return os.Rename(oldpath, newpath) }
+
+// Path resolution
+func (OsFs) EvalSymlinks(path string) (string, error) { return filepath.EvalSymlinks(path) }
+func (OsFs) Executable() (string, error)              { return os.Executable() }

main_authsidecar.go

@@ -0,0 +1,11 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build authsidecar
+
+package main
+
+import (
+	_ "github.com/larksuite/cli/extension/credential/sidecar" // activate sidecar credential provider
+	_ "github.com/larksuite/cli/extension/transport/sidecar"  // activate sidecar transport interceptor
+)

main_noauthsidecar.go

@@ -0,0 +1,54 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build !authsidecar
+
+// This file is the fail-closed guard for builds that do NOT include the
+// `authsidecar` tag. The sidecar credential-isolation feature is only
+// compiled in under that tag; deploying the plain build into an environment
+// that expects sidecar isolation would silently fall back to direct env
+// credential use — exactly the failure mode the feature is meant to prevent.
+//
+// When LARKSUITE_CLI_AUTH_PROXY is set, we refuse to run rather than ignore
+// the variable. The operator either rebuilt without realizing (wrong
+// artifact) or the sandbox inherited the var by accident; both cases want
+// a loud startup error, not a mysterious token leak on the first API call.
+
+package main
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/larksuite/cli/internal/envvars"
+)
+
+func init() {
+	if code := checkNoAuthsidecarBuild(os.Getenv, os.Stderr); code != 0 {
+		os.Exit(code)
+	}
+}
+
+// checkNoAuthsidecarBuild returns a non-zero exit code (and writes a
+// human-readable reason to stderr) when the environment asks for sidecar
+// isolation that this binary cannot provide. Factored out from init() so
+// tests can exercise the decision without actually calling os.Exit.
+func checkNoAuthsidecarBuild(getenv func(string) string, stderr io.Writer) int {
+	v := getenv(envvars.CliAuthProxy)
+	if v == "" {
+		return 0
+	}
+	fmt.Fprintf(stderr,
+		"ERROR: %s is set, but this lark-cli binary was built WITHOUT the "+
+			"'authsidecar' build tag.\n"+
+			"The sidecar credential-isolation feature is compiled out — "+
+			"running would bypass isolation and\n"+
+			"send any real credentials present in the environment directly "+
+			"to the Lark API.\n\n"+
+			"To fix, either:\n"+
+			"  - rebuild the CLI with: go build -tags authsidecar\n"+
+			"  - or unset %s if sidecar isolation is not required\n",
+		envvars.CliAuthProxy, envvars.CliAuthProxy)
+	return 2
+}

main_noauthsidecar_test.go

@@ -0,0 +1,52 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+//go:build !authsidecar
+
+package main
+
+import (
+	"bytes"
+	"strings"
+	"testing"
+
+	"github.com/larksuite/cli/internal/envvars"
+)
+
+func TestCheckNoAuthsidecarBuild_Unset(t *testing.T) {
+	var stderr bytes.Buffer
+	code := checkNoAuthsidecarBuild(func(string) string { return "" }, &stderr)
+	if code != 0 {
+		t.Errorf("exit code = %d, want 0 when AUTH_PROXY is unset", code)
+	}
+	if stderr.Len() != 0 {
+		t.Errorf("stderr should be empty, got %q", stderr.String())
+	}
+}
+
+// TestCheckNoAuthsidecarBuild_Set verifies that deploying a plain build into
+// a sandbox that expects sidecar isolation fails loudly at startup instead
+// of silently leaking credentials through the env provider path.
+func TestCheckNoAuthsidecarBuild_Set(t *testing.T) {
+	var stderr bytes.Buffer
+	env := func(k string) string {
+		if k == envvars.CliAuthProxy {
+			return "http://127.0.0.1:16384"
+		}
+		return ""
+	}
+	code := checkNoAuthsidecarBuild(env, &stderr)
+	if code == 0 {
+		t.Fatal("expected non-zero exit code when AUTH_PROXY is set")
+	}
+	msg := stderr.String()
+	for _, want := range []string{
+		envvars.CliAuthProxy,
+		"authsidecar", // build-tag name must appear so operators can act on it
+		"rebuild",
+	} {
+		if !strings.Contains(msg, want) {
+			t.Errorf("stderr message missing %q; got:\n%s", want, msg)
+		}
+	}
+}

package-lock.json

@@ -0,0 +1,84 @@
+{
+  "name": "@larksuite/cli",
+  "version": "1.0.11",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "@larksuite/cli",
+      "version": "1.0.11",
+      "cpu": [
+        "x64",
+        "arm64"
+      ],
+      "hasInstallScript": true,
+      "license": "MIT",
+      "os": [
+        "darwin",
+        "linux",
+        "win32"
+      ],
+      "dependencies": {
+        "@clack/prompts": "^1.2.0"
+      },
+      "bin": {
+        "lark-cli": "scripts/run.js"
+      },
+      "engines": {
+        "node": ">=16"
+      }
+    },
+    "node_modules/@clack/core": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@clack/core/-/core-1.2.0.tgz",
+      "integrity": "sha512-qfxof/3T3t9DPU/Rj3OmcFyZInceqj/NVtO9rwIuJqCUgh32gwPjpFQQp/ben07qKlhpwq7GzfWpST4qdJ5Drg==",
+      "license": "MIT",
+      "dependencies": {
+        "fast-wrap-ansi": "^0.1.3",
+        "sisteransi": "^1.0.5"
+      }
+    },
+    "node_modules/@clack/prompts": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/@clack/prompts/-/prompts-1.2.0.tgz",
+      "integrity": "sha512-4jmztR9fMqPMjz6H/UZXj0zEmE43ha1euENwkckKKel4XpSfokExPo5AiVStdHSAlHekz4d0CA/r45Ok1E4D3w==",
+      "license": "MIT",
+      "dependencies": {
+        "@clack/core": "1.2.0",
+        "fast-string-width": "^1.1.0",
+        "fast-wrap-ansi": "^0.1.3",
+        "sisteransi": "^1.0.5"
+      }
+    },
+    "node_modules/fast-string-truncated-width": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/fast-string-truncated-width/-/fast-string-truncated-width-1.2.1.tgz",
+      "integrity": "sha512-Q9acT/+Uu3GwGj+5w/zsGuQjh9O1TyywhIwAxHudtWrgF09nHOPrvTLhQevPbttcxjr/SNN7mJmfOw/B1bXgow==",
+      "license": "MIT"
+    },
+    "node_modules/fast-string-width": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/fast-string-width/-/fast-string-width-1.1.0.tgz",
+      "integrity": "sha512-O3fwIVIH5gKB38QNbdg+3760ZmGz0SZMgvwJbA1b2TGXceKE6A2cOlfogh1iw8lr049zPyd7YADHy+B7U4W9bQ==",
+      "license": "MIT",
+      "dependencies": {
+        "fast-string-truncated-width": "^1.2.0"
+      }
+    },
+    "node_modules/fast-wrap-ansi": {
+      "version": "0.1.6",
+      "resolved": "https://registry.npmjs.org/fast-wrap-ansi/-/fast-wrap-ansi-0.1.6.tgz",
+      "integrity": "sha512-HlUwET7a5gqjURj70D5jl7aC3Zmy4weA1SHUfM0JFI0Ptq987NH2TwbBFLoERhfwk+E+eaq4EK3jXoT+R3yp3w==",
+      "license": "MIT",
+      "dependencies": {
+        "fast-string-width": "^1.1.0"
+      }
+    },
+    "node_modules/sisteransi": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/sisteransi/-/sisteransi-1.0.5.tgz",
+      "integrity": "sha512-bLGGlR1QxBcynn2d5YmDX4MGjlZvy2MRBDRNHLJ8VI6l6+9FUiyTFNJ0IveOSP0bcXgVDPRcfGqA0pjaqUpfVg==",
+      "license": "MIT"
+    }
+  }
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@larksuite/cli",
-  "version": "1.0.7",
+  "version": "1.0.17",
   "description": "The official CLI for Lark/Feishu open platform",
   "bin": {
     "lark-cli": "scripts/run.js"
@@ -27,7 +27,11 @@
   "license": "MIT",
   "files": [
     "scripts/install.js",
+    "scripts/install-wizard.js",
     "scripts/run.js",
     "CHANGELOG.md"
-  ]
+  ],
+  "dependencies": {
+    "@clack/prompts": "^1.2.0"
+  }
 }

scripts/install-wizard.js

@@ -0,0 +1,372 @@
+#!/usr/bin/env node
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+const fs = require("fs");
+const path = require("path");
+const { execFileSync, execFile } = require("child_process");
+const p = require("@clack/prompts");
+
+const PKG = "@larksuite/cli";
+const SKILLS_REPO = "https://open.feishu.cn";
+const SKILLS_REPO_FALLBACK = "larksuite/cli";
+const isWindows = process.platform === "win32";
+
+// ---------------------------------------------------------------------------
+// i18n
+// ---------------------------------------------------------------------------
+
+const messages = {
+  zh: {
+    setup:          "正在设置 Feishu/Lark CLI...",
+    step1:          "正在安装 %s...",
+    step1Upgrade:   "正在升级 %s (v%s → v%s)...",
+    step1Skip:      "已安装 (v%s)，跳过",
+    step1Done:      "已全局安装",
+    step1Upgraded:  "已升级到 v%s",
+    step1Fail:      "全局安装失败。运行以下命令重试: npm install -g %s",
+    step2:          "安装 AI Skills",
+    step2Skip:      "已安装，跳过",
+    step2Spinner:   "正在安装 Skills...",
+    step2Done:      "Skills 已安装",
+    step2Fail:      "Skills 安装失败。运行以下命令重试: npx skills add %s -y -g",
+    step3:          "正在配置应用...",
+    step3NotFound:  "未找到 lark-cli，终止",
+    step3Found:     "发现已配置应用 (App ID: %s)，继续使用？",
+    step3Skip:      "跳过应用配置",
+    step3Done:      "应用已配置",
+    step3Fail:      "应用配置失败。运行以下命令重试: lark-cli config init --new",
+    step4:          "授权",
+    step4NotFound:  "未找到 lark-cli，跳过授权",
+    step4Confirm:   "是否允许 AI 访问你个人的消息、文档、日历等飞书 / Lark 数据，并以你的名义执行操作？",
+    step4Skip:      "跳过授权。后续运行 lark-cli auth login 完成授权",
+    step4Done:      "授权完成",
+    step4Fail:      "授权失败。运行以下命令重试: lark-cli auth login",
+    done:           "安装完成！\n可以和你的 AI 工具（如 Claude Code、Trae等）说：\"飞书/Lark CLI 能帮我做什么？结合我的情况推荐一下从哪里开始\"",
+    cancelled:      "安装已取消",
+  },
+  en: {
+    setup:          "Setting up Feishu/Lark CLI...",
+    step1:          "Installing %s globally...",
+    step1Upgrade:   "Upgrading %s (v%s → v%s)...",
+    step1Skip:      "Already installed (v%s). Skipped",
+    step1Done:      "Installed globally",
+    step1Upgraded:  "Upgraded to v%s",
+    step1Fail:      "Failed to install globally. Run manually: npm install -g %s",
+    step2:          "Install AI skills",
+    step2Skip:      "Already installed. Skipped",
+    step2Spinner:   "Installing skills...",
+    step2Done:      "Skills installed",
+    step2Fail:      "Failed to install skills. Run manually: npx skills add %s -y -g",
+    step3:          "Configuring app...",
+    step3NotFound:  "lark-cli not found. Aborting",
+    step3Found:     "Found existing app (App ID: %s). Use this app?",
+    step3Skip:      "Skipped app configuration",
+    step3Done:      "App configured",
+    step3Fail:      "Failed to configure app. Run manually: lark-cli config init --new",
+    step4:          "Authorization",
+    step4NotFound:  "lark-cli not found. Skipping authorization",
+    step4Confirm:   "Allow the AI to access your messages, documents, calendar, and more in Feishu/Lark, and perform actions on your behalf?",
+    step4Skip:      "Skipped. Run lark-cli auth login to authorize later",
+    step4Done:      "Authorization complete",
+    step4Fail:      "Failed to authorize. Run lark-cli auth login to retry",
+    done:           "You are all set!\nNow try asking your AI tool (Claude Code, Trae, etc.): \"What can Feishu/Lark CLI help me with, and where should I start?\"",
+    cancelled:      "Installation cancelled",
+  },
+};
+
+// ---------------------------------------------------------------------------
+// Helpers
+// ---------------------------------------------------------------------------
+
+function handleCancel(value, msg) {
+  if (p.isCancel(value)) {
+    p.cancel(msg.cancelled);
+    process.exit(0);
+  }
+  return value;
+}
+
+function execCmd(cmd, args, opts) {
+  if (isWindows) {
+    return execFileSync("cmd.exe", ["/c", cmd, ...args], opts);
+  }
+  return execFileSync(cmd, args, opts);
+}
+
+function run(cmd, args, opts = {}) {
+  execCmd(cmd, args, { stdio: "inherit", ...opts });
+}
+
+function runSilent(cmd, args, opts = {}) {
+  return execCmd(cmd, args, {
+    stdio: ["ignore", "pipe", "pipe"],
+    ...opts,
+  });
+}
+
+function runSilentAsync(cmd, args, opts = {}) {
+  const actualCmd = isWindows ? "cmd.exe" : cmd;
+  const actualArgs = isWindows ? ["/c", cmd, ...args] : args;
+  return new Promise((resolve, reject) => {
+    execFile(actualCmd, actualArgs, {
+      stdio: ["ignore", "pipe", "pipe"],
+      ...opts,
+    }, (err, stdout) => {
+      if (err) reject(err);
+      else resolve(stdout);
+    });
+  });
+}
+
+function fmt(template, ...values) {
+  let i = 0;
+  return template.replace(/%s/g, () => values[i++] ?? "");
+}
+
+/** Resolve the path of globally installed lark-cli (skip npx temp copies). */
+function whichLarkCli() {
+  try {
+    const prefix = execFileSync("npm", ["prefix", "-g"], {
+      stdio: ["ignore", "pipe", "pipe"],
+    }).toString().trim();
+    const bin = isWindows
+      ? path.join(prefix, "lark-cli.cmd")
+      : path.join(prefix, "bin", "lark-cli");
+    if (fs.existsSync(bin)) return bin;
+  } catch (_) {
+    // fall through
+  }
+  // Fallback to which/where if npm prefix lookup fails.
+  try {
+    const cmd = isWindows ? "where" : "which";
+    return execFileSync(cmd, ["lark-cli"], { stdio: ["ignore", "pipe", "pipe"] })
+      .toString()
+      .split("\n")[0]
+      .trim();
+  } catch (_) {
+    return null;
+  }
+}
+
+/** Get the latest version of @larksuite/cli from the registry. Returns version or null. */
+function getLatestVersion() {
+  try {
+    const out = runSilent("npm", ["view", PKG, "version"], { timeout: 15000 });
+    const ver = out.toString().trim();
+    return /^\d+\.\d+\.\d+/.test(ver) ? ver : null;
+  } catch (_) {
+    return null;
+  }
+}
+
+/** Compare two semver strings. Returns true if a < b. */
+function semverLessThan(a, b) {
+  const pa = a.replace(/-.*$/, "").split(".").map(Number);
+  const pb = b.replace(/-.*$/, "").split(".").map(Number);
+  for (let i = 0; i < 3; i++) {
+    if ((pa[i] || 0) < (pb[i] || 0)) return true;
+    if ((pa[i] || 0) > (pb[i] || 0)) return false;
+  }
+  return false;
+}
+
+/** Check whether @larksuite/cli is truly installed in npm global prefix. Returns version or null. */
+function getGloballyInstalledVersion() {
+  try {
+    const out = runSilent("npm", ["list", "-g", PKG], { timeout: 15000 });
+    const match = out.toString().match(/@(\d+\.\d+\.\d+[^\s]*)/);
+    return match ? match[1] : "unknown";
+  } catch (_) {
+    return null;
+  }
+}
+
+/** Check whether lark-cli config already exists. Returns app ID or null. */
+function getExistingAppId(binPath) {
+  try {
+    const out = runSilent(binPath, ["config", "show"], { timeout: 10000 });
+    const json = JSON.parse(out.toString());
+    return json.appId || null;
+  } catch (_) {
+    return null;
+  }
+}
+
+/** Parse --lang from process.argv, returns "zh", "en", or null. */
+function parseLangArg() {
+  const args = process.argv.slice(2);
+  for (let i = 0; i < args.length; i++) {
+    if (args[i] === "--lang" && args[i + 1]) {
+      const val = args[i + 1].toLowerCase();
+      if (val === "zh" || val === "en") return val;
+    }
+    if (args[i].startsWith("--lang=")) {
+      const val = args[i].split("=")[1].toLowerCase();
+      if (val === "zh" || val === "en") return val;
+    }
+  }
+  return null;
+}
+
+// ---------------------------------------------------------------------------
+// Steps
+// ---------------------------------------------------------------------------
+
+async function stepSelectLang() {
+  const fromArg = parseLangArg();
+  if (fromArg) return fromArg;
+
+  const lang = await p.select({
+    message: "请选择语言 / Select language",
+    options: [
+      { value: "zh", label: "中文" },
+      { value: "en", label: "English" },
+    ],
+  });
+  return handleCancel(lang, messages.zh);
+}
+
+async function stepInstallGlobally(msg) {
+  const installedVer = getGloballyInstalledVersion();
+  const latestVer = getLatestVersion();
+  const needsUpgrade = installedVer && latestVer && semverLessThan(installedVer, latestVer);
+
+  if (installedVer && !needsUpgrade) {
+    p.log.info(fmt(msg.step1Skip, installedVer));
+    return false;
+  }
+
+  const s = p.spinner();
+  if (needsUpgrade) {
+    s.start(fmt(msg.step1Upgrade, PKG, installedVer, latestVer));
+  } else {
+    s.start(fmt(msg.step1, PKG));
+  }
+  try {
+    await runSilentAsync("npm", ["install", "-g", PKG], { timeout: 120000 });
+    s.stop(needsUpgrade ? fmt(msg.step1Upgraded, latestVer) : msg.step1Done);
+    return needsUpgrade;
+  } catch (_) {
+    s.stop(fmt(msg.step1Fail, PKG));
+    process.exit(1);
+  }
+}
+
+async function skillsAlreadyInstalled() {
+  try {
+    const out = await runSilentAsync("npx", ["-y", "skills", "ls", "-g"], {
+      timeout: 120000,
+    });
+    return /^lark-/m.test(out.toString());
+  } catch (_) {
+    return false;
+  }
+}
+
+async function stepInstallSkills(msg) {
+  const s = p.spinner();
+  s.start(msg.step2Spinner);
+  try {
+    if (await skillsAlreadyInstalled()) {
+      s.stop(msg.step2Skip);
+      return;
+    }
+    try {
+      await runSilentAsync("npx", ["-y", "skills", "add", SKILLS_REPO, "-y", "-g"], {
+        timeout: 120000,
+      });
+    } catch (_) {
+      await runSilentAsync("npx", ["-y", "skills", "add", SKILLS_REPO_FALLBACK, "-y", "-g"], {
+        timeout: 120000,
+      });
+    }
+    s.stop(msg.step2Done);
+  } catch (_) {
+    s.stop(fmt(msg.step2Fail, SKILLS_REPO_FALLBACK));
+    process.exit(1);
+  }
+}
+
+async function stepConfigInit(msg, lang) {
+  const s = p.spinner();
+  s.start(msg.step3);
+
+  const larkCli = whichLarkCli();
+  if (!larkCli) {
+    s.stop(msg.step3NotFound);
+    process.exit(1);
+  }
+
+  const appId = getExistingAppId(larkCli);
+  s.stop(msg.step3);
+
+  if (appId) {
+    const reuse = await p.confirm({
+      message: fmt(msg.step3Found, appId),
+    });
+    if (handleCancel(reuse, msg) && reuse) {
+      p.log.info(msg.step3Skip);
+      return;
+    }
+  }
+
+  try {
+    run(larkCli, ["config", "init", "--new", "--lang", lang]);
+    p.log.success(msg.step3Done);
+  } catch (_) {
+    p.log.error(msg.step3Fail);
+    process.exit(1);
+  }
+}
+
+async function stepAuthLogin(msg) {
+  const larkCli = whichLarkCli();
+  if (!larkCli) {
+    p.log.warn(msg.step4NotFound);
+    return;
+  }
+
+  const yes = await p.confirm({
+    message: msg.step4Confirm,
+  });
+  if (p.isCancel(yes)) {
+    p.cancel(msg.cancelled);
+    process.exit(0);
+  }
+  if (!yes) {
+    p.log.info(msg.step4Skip);
+    return;
+  }
+
+  p.log.step(msg.step4);
+  try {
+    run(larkCli, ["auth", "login"]);
+    p.log.success(msg.step4Done);
+  } catch (_) {
+    p.log.warn(msg.step4Fail);
+  }
+}
+
+// ---------------------------------------------------------------------------
+// Main
+// ---------------------------------------------------------------------------
+
+async function main() {
+  const lang = await stepSelectLang();
+  const msg = messages[lang];
+
+  p.intro(msg.setup);
+
+  await stepInstallGlobally(msg);
+  await stepInstallSkills(msg);
+  await stepConfigInit(msg, lang);
+  await stepAuthLogin(msg);
+
+  p.outro(msg.done);
+}
+
+main().catch((err) => {
+  p.cancel("Unexpected error: " + (err.message || err));
+  process.exit(1);
+});