Restore the chat manager API suite to the dashboard curated quality gate.
- move `chat-manager.test.ts` back into the curated dashboard API quality project
- remove the temporary chat-manager quarantine and broad vitest excludes that kept it out of coverage
- stabilize chat-manager timing/subscriber tests with fake timers and explicit unsubscribe cleanup
- align the agent import route mock so the rescued suite uses the expected CLI settings stub
Files changed:
$(git diff --cached --stat)
Fusion-Task-Id: FN-6069
Fusion-Task-Lineage: e70e7817-9fe6-4e80-8b53-8f99c6214941
02df5d1c62