feat: Add indexes on `detected_objects.moderation_status` and `detected_objects.category` for improved query performance.

drizzle/0008_young_wendell_rand.sql

@@ -0,0 +1,2 @@
+-- Story 4.1: Add index on detected_objects.moderation_status for vault query performance
+CREATE INDEX IF NOT EXISTS "idx_detected_objects_moderation_status" ON "detected_objects"("moderation_status");

drizzle/0009_steep_jack_murdock.sql

@@ -0,0 +1,2 @@
+-- Migration 0009: Add category index for filtering performance (Story 4.2)
+CREATE INDEX IF NOT EXISTS idx_detected_objects_category ON detected_objects(category);