Sync from /srv/compose/unified-media-manager

internal/db/migrations/008_activity_events.sql

@@ -0,0 +1,24 @@
+-- Activity events table for unified event logging
+CREATE TYPE EVENT_TYPE AS ENUM (
+    'grab', 'import', 'download_complete', 'download_failed',
+    'quality_upgrade', 'safety_block', 'error', 'info'
+);
+
+CREATE TABLE activity_events (
+    id            BIGSERIAL,
+    event_type    EVENT_TYPE NOT NULL,
+    media_id      BIGINT,
+    media_type    MEDIA_TYPE,
+    title         TEXT NOT NULL,
+    description   TEXT,
+    data          JSONB DEFAULT '{}',
+    created_at    TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    PRIMARY KEY (id, created_at)
+) PARTITION BY RANGE (created_at);
+
+CREATE TABLE activity_events_current PARTITION OF activity_events
+    FOR VALUES FROM (CURRENT_DATE - INTERVAL '30 days') TO (MAXVALUE);
+
+CREATE INDEX idx_activity_type ON activity_events (event_type, created_at DESC);
+CREATE INDEX idx_activity_media ON activity_events (media_id, media_type, created_at DESC) WHERE media_id IS NOT NULL;
+CREATE INDEX idx_activity_created ON activity_events (created_at DESC);