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

internal/db/migrations/011_performance_indexes.sql

@@ -0,0 +1,15 @@
+-- Add has_files column to avoid correlated subquery per row
+ALTER TABLE media ADD COLUMN IF NOT EXISTS has_files BOOLEAN NOT NULL DEFAULT false;
+
+-- Backfill from existing data
+UPDATE media SET has_files = EXISTS (SELECT 1 FROM media_files mf WHERE mf.media_id = media.id AND mf.deleted_at IS NULL);
+
+-- Add index for the upgrade detection query
+CREATE INDEX IF NOT EXISTS idx_media_upgrade_candidates
+    ON media (media_type) WHERE monitored = true AND has_files = true
+    AND current_quality IS NOT NULL AND desired_quality IS NOT NULL
+    AND current_quality::text != desired_quality::text;
+
+-- Add trigram index for substring title search
+CREATE EXTENSION IF NOT EXISTS pg_trgm;
+CREATE INDEX IF NOT EXISTS idx_media_title_trgm ON media USING gin (title gin_trgm_ops);