fix(credentials,authorization,llm-pi-ai): harden the auth seams per review

Review findings on #2509, all confirmed:

- Every writer of .credentials.yaml now waits out the record-mutation
  lock (DOCUMENT_LOCK_WAIT_MS): refs and records share one file and one
  lock, so a reference write or record delete contending with an OAuth
  refresh must not fail at the 2s file-work default.
- api-key records are admitted before they are rendered: an empty key,
  a non-POSIX env name, or an empty env value is refused at the write
  instead of persisting a document the next boot rejects wholesale.
- llm-pi-ai no longer lets the credential-key grammar reject legal
  route ids: reads answer "nothing stored" via isCredentialKeySegment
  (new dsh-credentials export), deletes have nothing to remove, and only
  a write refuses, as LlmError UNSTORABLE_PROVIDER_ID; flow registration
  skips a future catalog id outside the grammar instead of failing the
  mount.
- authorization/settled fans out with contained listener failures on
  the credentials seam's terms (INVARIANT still rethrows), so a broken
  watcher can never turn a finished attempt into a failure.
- notify() is fire-and-forget at the seam: a surface that cannot render
  a notice loses the notice, never the attempt.
- A declined prompt is an outcome: interactions reject with the new
  AuthorizationDeclinedError and the attempt settles cancelled instead
  of failed.
- NOT_COMMITTED now confirms a commit observed during the attempt
  (credentials/record-updated for the flow's key), so a re-auth cannot
  pass a stale record off as fresh; a flow that deletes its record is
  refused on the same code.

READMEs, the subsystem/event/config catalogs, and the Agent Note follow
the shipped behavior; memory.ts carries the dedup TODO.

docs/event-producer-consumer.zh.md

@@ -24,7 +24,7 @@
 | `agent/status` | `emit` | [`packages/core/agent/src/runtime-types.ts:178`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`emit`) | [`agent`](../packages/core/agent), `agent-team`, `apiproxy`, [`compaction-basic`](../packages/compaction/compaction-basic), [`goal-round-driver`](../packages/goal/goal-round-driver), [`schedule`](../packages/schedule/schedule), `server` |
 | `agent/turn-stopping` | `serial` | [`packages/core/agent/src/runtime-types.ts:278`](../packages/core/agent/src/runtime-types.ts) | [`agent-loop`](../packages/core/agent-loop) (`serial`) | [`hooks-claude-code`](../packages/hooks/hooks-claude-code), [`hooks-codex`](../packages/hooks/hooks-codex) |
 | `approval/request` | `waterfall` | [`packages/interaction/user-approval/src/index.ts:30`](../packages/interaction/user-approval/src/index.ts) | [`user-approval`](../packages/interaction/user-approval) (`waterfall`) | [`acp`](../packages/acp/acp), `apiproxy` |
-| `authorization/settled` | `emit` | [`packages/credentials/authorization/src/index.ts:57`](../packages/credentials/authorization/src/index.ts) | [`authorization`](../packages/credentials/authorization) (`emit`) | [`authorization`](../packages/credentials/authorization) |
+| `authorization/settled` | `emit` | [`packages/credentials/authorization/src/index.ts:57`](../packages/credentials/authorization/src/index.ts) | [`authorization`](../packages/credentials/authorization) (`events.dispatch`) | [`authorization`](../packages/credentials/authorization) |
 | `commands/change` | `emit` | [`packages/interaction/commands/src/types.ts:72`](../packages/interaction/commands/src/types.ts) | [`commands`](../packages/interaction/commands) (`events.dispatch`) | `apiproxy` |
 | `cordis/dynamic-package` | `emit` | [`packages/extensions/cordis-host-runner/src/types.ts:379`](../packages/extensions/cordis-host-runner/src/types.ts) | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) (`emit`) | `apiproxy` |
 | `cordis/dynamic-retract` | `emit` | [`packages/extensions/cordis-host-runner/src/types.ts:385`](../packages/extensions/cordis-host-runner/src/types.ts) | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) (`emit`) | `apiproxy` |
@@ -32,7 +32,7 @@
 | `cordis/inspect-query-resolved` | `emit` | [`packages/extensions/cordis-host-runner/src/types.ts:397`](../packages/extensions/cordis-host-runner/src/types.ts) | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) (`emit`) | `apiproxy` |
 | `cordis/request-run` | `emit` | [`packages/extensions/cordis-host-runner/src/types.ts:367`](../packages/extensions/cordis-host-runner/src/types.ts) | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) (`emit`) | `apiproxy` |
 | `cordis/request-run-resolved` | `emit` | [`packages/extensions/cordis-host-runner/src/types.ts:373`](../packages/extensions/cordis-host-runner/src/types.ts) | [`cordis-host-runner`](../packages/extensions/cordis-host-runner) (`emit`) | `apiproxy` |
-| `credentials/record-updated` | `emit` | [`packages/credentials/credentials/src/types.ts:87`](../packages/credentials/credentials/src/types.ts) | [`credentials`](../packages/credentials/credentials) (`events.dispatch`) | - |
+| `credentials/record-updated` | `emit` | [`packages/credentials/credentials/src/types.ts:87`](../packages/credentials/credentials/src/types.ts) | [`credentials`](../packages/credentials/credentials) (`events.dispatch`) | [`authorization`](../packages/credentials/authorization) |
 | `credentials/updated` | `emit` | [`packages/credentials/credentials/src/types.ts:75`](../packages/credentials/credentials/src/types.ts) | [`credentials`](../packages/credentials/credentials) (`events.dispatch`) | `apiproxy`, [`credentials`](../packages/credentials/credentials) |
 | `domain/changed` | `emit` | [`packages/storage/storage-domain/src/events.ts:46`](../packages/storage/storage-domain/src/events.ts) | [`storage-domain`](../packages/storage/storage-domain) (`emit`) | `apiproxy`, [`storage-domain`](../packages/storage/storage-domain), [`workspace`](../packages/workspace/workspace) |
 | `fs/edit-intent` | `waterfall` | [`packages/fs/fs/src/index.ts:66`](../packages/fs/fs/src/index.ts) | [`tool-fs`](../packages/fs/tool-fs) (`waterfall`), [`tool-str-replace-editor`](../packages/fs/tool-str-replace-editor) (`waterfall`) | [`fs-observation-policy`](../packages/fs/fs-observation-policy) |