Test	Scenario	Expected
playground_chip	Click “Stream OpenAI (TS)”	answer_md contains StreamCallbackHandler
rate_limit	Hit /generate-context 11× with starter	HTTP 429
profile_cache	Call same prompt twice	second latency < 300 ms (Redis)
jwt_required	Omit cookie	HTTP 401
quota_reset	After 24 h redis key expires	call succeeds