f3 admin

• /anomalies — Score Oracle anomalies queue (E-M7-05, §16.8)
• /audit
• /calibration — α + half-life calibration (E-M7-04)
• /edges/replay
• /flags
• /match-candidates
• /observability/llm — LLM observability (E-M7-01/06/07/08)
• /opportunities
• /retention — Score retention cron + R2 archive (E-M7-03, §6.18)