Get Recent Anomalies

Return last hours of av_anomaly_log rows + aggregated summary.

Response shape: { "rows": [ {id, created_at, ticker, field_path, rule, raw_value, fetch_function, severity, root_cause}, ... ], "summary": { "total": int, "unexplained": int, # rows with root_cause IS NULL "known_benign": int, # rows auto-classified by _derive_root_cause "root_causes": {class: count, ...}, # non-null classes only "categories": {av_bounds, av_format, calc_failures, zero_weight}, "top_rules": [[rule, count], ... up to 10 entries desc], "top_tickers": [[ticker, count], ... up to 10 entries desc], "truncated": bool, # True iff the scan cap bounded the read "scan_cap": int, # ANOMALY_SCAN_CAP }, "generated_at": ISO timestamp, "hours": int, }

Admin-only. Graceful degradation on Supabase failure: returns 200 with empty rows + zero counts (see module docstring).