chore: initialize from backend template 0a6dd0e

2026-08-13 20:31:02 +09:00
commit e64e701fe5
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+---
+title: Runbook — AUTH_TOKEN_EXPIRED (토큰 만료)
+category: AUTH
+error_codes: [AUTH_TOKEN_EXPIRED]
+severity: P3
+owner: oncall
+last_updated: 2026-06-15
+status: stub
+---
+
+# Runbook: AUTH_TOKEN_EXPIRED (`runbook://auth/token-expired`)
+
+## Symptoms
+
+- HTTP 401 with `error.code=AUTH_TOKEN_EXPIRED`
+- Spike may indicate clock skew or long-lived token usage
+
+## Diagnosis
+
+- Check `exp` claim vs server clock
+- Check NTP sync on token-issuing host
+
+## Action
+
+- Client must refresh tokens before expiry
+- Verify clock skew tolerance is configured (default 60s)
+
+## Escalation
+
+- Escalate if spike is widespread or clock drift is confirmed
+
+---
+
+> **Stub**: Phase D2 — author body after domain adoption. (feature-operational-runbook-contract D9)