discovery_signals

Per-agency document-output spike signal that powers the feed's discovery panel — agencies whose document count in the trailing 30 days is at least 2× their prior-year monthly mean, requiring ≥24 documents in the prior year to suppress tiny-denominator noise. Recomputed relative to the run date, so rows turn over on every rebuild; it is a current-state signal, not a time series. Built by build_discovery_signals from documents.

• Parquet file: discovery_signals.parquet
• Queryable via MCP query_sql: Yes

Column	Type	Description
agency_code	VARCHAR	Agency short code.
recent_30d	BIGINT	Documents the agency posted in the trailing 30 days.
baseline	DOUBLE	Prior-year monthly mean document count (months 2–13 back).
ratio	DOUBLE	recent_30d divided by baseline — the spike multiple.