feat(integration): add status reporting (#2674)

* feat(integration): add status reporting

* docs(integration): include status in query command docstring

* fix(integration): handle Windows extended-length paths in status containment

On Windows, os.readlink() (and sometimes Path.resolve()) return paths with
the \\?\ extended-length prefix. Comparing such a target against a plain
project root via Path.relative_to() spuriously fails, so an in-project
dangling symlink was classified as `invalid` instead of `missing` — failing
test_status_treats_dangling_symlink_as_missing and the windows-style variant
on the Windows CI runners.

Centralize the containment check in _is_within_project() and strip the
\\?\ / \\?\UNC\ prefix from both sides before relative_to(). Add portable
regression tests for the prefix-stripping helper and the containment contract.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

* test(integration): restore top-level pytest import after rebase

A three-way merge / rebase onto main silently dropped the module-level
`import pytest` from test_integration_subcommand.py: main reorganized the
import block without it (using only a local `import pytest as _pytest`),
while this branch added top-level fixtures and `pytest.skip`/`pytest.raises`
usage. The overlapping import-hunk edits resolved by dropping the import,
breaking collection with `NameError: name 'pytest' is not defined` on every
runner. Re-add the import in the third-party group.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* test(integration): fix Windows UNC path assertion in status helper test

`test_strip_extended_length_prefix_normalizes_windows_paths` compared the
str() form of the helper's output against a hand-built string. On Windows,
pathlib renders a UNC root with a trailing separator (`\\server\share\`),
so the exact string match failed there (`\\server\share\` != `\\server\share`)
even though `_strip_extended_length_prefix` behaves correctly — the trailing
separator is irrelevant to the `relative_to` containment check it feeds.

Compare Path objects (semantic equality) instead of exact strings so the
assertion holds on both POSIX and Windows. No production code change needed.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(integration): make shared-manifest remediation specify --integration

The fallback `_manifest_suggestion` for the shared `speckit` manifest (used
when no usable default integration is recorded) suggested
`specify init --here --force`, which can trigger interactive integration
selection. For CI/agent consumers of `integration status`, surface an
explicit `--integration <key>` placeholder, matching the file's existing
`<key>` suggestion style.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

docs/reference/integrations.md

@@ -126,6 +126,27 @@ specify integration upgrade [<key>]
 
 Reinstalls an installed integration with updated templates and commands (e.g., after upgrading Spec Kit). Defaults to the default integration; if a key is provided, it must be one of the installed integrations. Detects locally modified files and blocks the upgrade unless `--force` is used. Stale files from the previous install that are no longer needed are removed automatically. Shared templates stay aligned with the default integration even when upgrading a non-default integration.
 
+## Report Integration Status
+
+```bash
+specify integration status
+specify integration status --json
+```
+
+Reports the current project's integration status without changing files. The
+status report includes the default integration, installed integrations,
+multi-install safety, missing managed files, modified managed files, invalid
+manifest paths, shared Spec Kit infrastructure health, unchecked manifests, and
+the target integration for default-sensitive shared templates. The JSON form is
+intended for CI and coding agents that need stable machine-readable status data;
+it also reports the raw recorded integrations and the integration manifests that
+were checked when state repair heuristics differ from the recorded file.
+The command exits 0 when the report status is `ok` or `warning`; it exits 1
+only when the report status is `error`. In JSON output, `multi_install_safe`
+is `null` when no installed integration set can be evaluated, such as when the
+integration state is missing, unreadable, lacks a valid recorded integration
+list, or records no installed integrations.
+
 ## Integration-Specific Options
 
 Some integrations accept additional options via `--integration-options`: