[claude] Fix moderation infinite re-review loop (#27) (#71)

lib/db/migrations/0007_moderation_flagged_status.sql

@@ -0,0 +1,9 @@
+-- Migration: Add 'flagged' status to relay_event_queue
+-- Fixes infinite re-review loop (#27): AI-flagged events now transition to
+-- status='flagged' instead of staying 'pending', so processPending() skips them.
+--
+-- The status column is plain TEXT (not a Postgres enum), so no ALTER TYPE is
+-- needed. This migration adds an index for admin queries on flagged events.
+
+CREATE INDEX IF NOT EXISTS idx_relay_event_queue_status
+  ON relay_event_queue(status);