## Observation 003: Session audit trail: no observability hooks deployed

**Type:** anomaly
**Severity:** sev2
**Time window:** 2026-05-05T14:47:00Z — ongoing

**Symptom:**

Tweedledum shipped auth_service with session token issuance (line 89-92, `issue_session_token()`) but did not instrument observability hooks. No metrics for: token creation rate, token collision detection, token cleanup success/failure, token validation latency, session revocation confirmation. The session audit trail (required by Queen ruling 002 to answer 'what did this session access?') is built but invisible. If session creation fails under load, or cleanup falls behind, or collisions occur, I cannot see it. The system is opaque in the domain that blocks GDPR breach notification compliance.

**Affected scope:**

Session layer (production impact unknown until visibility is added). Post-incident forensics depend entirely on application logs the Tweedles chose not to instrument.

**Evidence:**
- auth_service.py, lines 89-92: session token creation with no observability hooks
- http_middleware.py, lines 156-160: session validation with no request-signature verification telemetry
- grafana session dashboard: empty (no data source configured)

**Probable domain:** backend

**Routed to:** tweedledum
