Every failure on the authentication, authorization, and configuration
path now surfaces as a typed structured error instead of an ad-hoc
envelope. Users and scripts that consume CLI output get:
- a fixed nine-category taxonomy on the wire, each mapped to a
stable shell exit code (authentication/authorization/config = 3,
network = 4, internal = 5, policy = 6, confirmation = 10)
- identity-aware detail fields (missing_scopes, requested_scopes,
granted_scopes, console_url, log_id, retryable, hint) carried
uniformly on the envelope
- a single canonical policy envelope at exit 6; the legacy
auth_error carve-out is retired
- per-subtype canonical message + hint that preserves Lark's
diagnostic phrasing and routes recovery to the right actor:
app developer (app_scope_not_applied), user (missing_scope,
token_scope_insufficient, user_unauthorized), or tenant admin
(app_unavailable, app_disabled)
- wrong app credentials classify as config/invalid_client whether
surfaced by the Open API endpoint (99991543) or the tenant
access-token mint endpoint (10003 / 10014), instead of
collapsing to a transport error or api/unknown
- local shortcut scope preflight emits the same
authorization/missing_scope envelope (identity + deterministic
missing-scope set) used by the post-call permission path, so AI
consumers read the same structured shape from precheck and from
server-returned permission denial
- streaming download/upload failures keep the same network subtype
split (timeout / TLS / DNS / transport) as the non-stream path
instead of collapsing every cause to a generic transport failure
- console_url is carried only on the bot-perspective
app_scope_not_applied envelope (where the recovery action is
"developer applies the scope at the developer console"); the
user-perspective missing_scope envelope drops the field, since
the only actionable user recovery is `lark-cli auth login --scope`
and pointing an end user at a console they cannot modify is
misleading
- bind workflows (Hermes / OpenClaw / lark-channel) flatten dynamic
Type tags to wire 'config' with the original module name kept
as a metric label
All 10 typed errors are cause-bearing, nil-safe on .Error() and
.Unwrap(), and defensively clone slice setter inputs. Four lint
rules (CheckNilSafeError / CheckBuilderImmutable / CheckUnwrapSymmetry
/ CheckBuildAPIErrorArms) lock these invariants on migrated paths.
Introduce a typed error contract framework for lark-cli so in-process
Go callers can branch via errors.As(&errs.XxxError{}) and shell scripts,
AI agents, and protocol adapters can branch on stable JSON type/subtype
fields instead of regex-parsing free-form messages.
Adds:
- Canonical taxonomy under errs/ (9 categories + typed Error structs
embedding a shared Problem, RFC 7807-aligned)
- Centralized Lark code metadata + identity-aware BuildAPIError dispatch
- Typed JSON envelope writer alongside the legacy envelope writer
- MCP / OAuth (RFC 6750 Bearer) projection adapters
- Five CI lint guards preventing ad-hoc taxonomy drift
Backward compatibility: legacy *output.ExitError producers (ErrAPI,
ErrWithHint, Errorf, ErrBare) and business shortcuts that use them
continue to render the legacy envelope unchanged. SecurityPolicyError
wire format and exit code are preserved via a carve-out; taxonomy
migration is deferred to PR 2. Domain-specific business migration is
staged across PR 3+.
Framework-direct paths now return typed *errs.*Error: ErrAuth /
ErrValidation / ErrNetwork emit category literals on the wire
(authentication / validation / network), *core.ConfigError is promoted
at the cmd/root boundary with exit code aligned from 2 to 3, and Lark
API permission denials classified by BuildAPIError exit 3.
At the SDK boundary, WrapDoAPIError preserves any already-classified
error (legacy *output.ExitError or typed *errs.*) so output.ErrAuth
from missing credentials surfaces with the auth category and exit 3
intact instead of being downgraded to a network error. Policy responses
classified by BuildAPIError (codes 21000 / 21001) extract challenge_url
and the canonical hint from the response body, matching what the
auth transport already surfaces at the HTTP layer; non-https
challenge URLs are dropped.
First PR in the feat/error-contract-* series.
