Session Stability Close Report — 2026-03-23

Summary

PR #322 (branch: fix/session-ready-thin) deployed and verified. GPT/Codex connectivity issue "lúc được lúc không" resolved with thin session readiness gate.

Review Result: PASS

• Patch scope correct: only adds /session-ready endpoint and stdio bootstrap gate
• Does NOT gate runtime routes (/chat, /mcp, MCP tool-call)
• Only checks session-start
• Retry backoff: 0s → 2s → 5s → 10s
• Error classifications: backend_down, tool_route_down, session_binding_failed
• No new dependencies, no changes to web-test

Test Result: 35/35 passed (2.82s)

• tests/test_session_readiness.py — PASS
• tests/test_stdio_session_gate.py — PASS
• tests/test_server.py — PASS
• Compile check: all 3 Python files OK
• Bash syntax check: test script OK

Merge

• Method: admin override (squash merge)
• Reason: CI blocked by GitHub billing ("recent account payments have failed"), NOT by test failures
• Merged at: 2026-03-23T10:36:09Z
• Commit: feat(agent-data): add thin session readiness gate (#322)

Deploy

• Method: GitHub Actions (Deploy Agent Data to VPS), run #23433054068
• Duration: 1m11s
• Result: SUCCESS

Verification (3/3 rounds PASS)

Round 1

{"status":"PASS","ready":true,"attempts":1,"latency_ms":236,"sentinel_hits":1}

Round 2

{"status":"PASS","ready":true,"attempts":1,"latency_ms":149,"sentinel_hits":1}

Round 3

{"status":"PASS","ready":true,"attempts":1,"latency_ms":169,"sentinel_hits":1}

All rounds: first attempt success, no retries needed. Sentinel query found known-good document. Health: all services (qdrant, postgres, openai) OK. Search functional.

Conclusion

Issue CLOSED. Session readiness gate deployed and verified stable. GPT/Codex connectivity should now be reliable with structured error reporting when issues occur.