diff --git a/apply-supplementary-indexes-migration.sql b/apply-supplementary-indexes-migration.sql
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+-- ================================================
+-- Jellyfin PostgreSQL Migration
+-- Migration: 20260227000000_AddSupplementaryIndexes
+-- Purpose: Add performance indexes for improved query performance
+-- ================================================
+-- 
+-- INSTRUCTIONS:
+-- 1. Connect to your Jellyfin PostgreSQL database
+-- 2. Run this script using psql, pgAdmin, or any PostgreSQL client
+-- 3. Verify indexes are created (see verification query at end)
+--
+-- ================================================
+
+BEGIN;
+
+-- Check if migration was already applied
+DO $$
+BEGIN
+    IF EXISTS (
+        SELECT 1 FROM library."__EFMigrationsHistory" 
+        WHERE "MigrationId" = '20260227000000_AddSupplementaryIndexes'
+    ) THEN
+        RAISE NOTICE 'Migration 20260227000000_AddSupplementaryIndexes already applied. Skipping...';
+    ELSE
+        RAISE NOTICE 'Applying migration 20260227000000_AddSupplementaryIndexes...';
+    END IF;
+END $$;
+
+COMMIT;
+
+-- ================================================
+-- Create Indexes (CONCURRENTLY - safe for production)
+-- ================================================
+
+-- 1. Composite index for filtered library browsing (type + virtual + parent)
+-- Use case: Browse items by type in a specific library, excluding virtual items
+-- Improves queries like: "SELECT * FROM BaseItems WHERE Type='Movie' AND IsVirtualItem=false AND TopParentId='xyz'"
+CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_baseitems_type_isvirtualitem_topparentid
+ON library."BaseItems" ("Type", "IsVirtualItem", "TopParentId")
+WHERE "IsVirtualItem" = false;
+
+-- 2. Index for folder hierarchy queries
+-- Use case: Navigate folder structures efficiently
+-- Improves queries like: "SELECT * FROM BaseItems WHERE TopParentId='xyz' AND IsFolder=true"
+CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_baseitems_topparentid_isfolder
+ON library."BaseItems" ("TopParentId", "IsFolder", "IsVirtualItem")
+WHERE "TopParentId" IS NOT NULL;
+
+-- 3. Index for recently added content with filters
+-- Use case: "Recently Added" view across all libraries
+-- Improves queries like: "SELECT * FROM BaseItems WHERE IsVirtualItem=false ORDER BY DateCreated DESC"
+CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_baseitems_datecreated_filtered
+ON library."BaseItems" ("DateCreated" DESC, "Type", "IsVirtualItem")
+WHERE "DateCreated" IS NOT NULL AND "IsVirtualItem" = false;
+
+-- 4. Index for reverse lookup (find items by genre/tag)
+-- Use case: "Show all items with genre 'Action'"
+-- Improves queries like: "SELECT ItemId FROM ItemValuesMap WHERE ItemValueId='action-genre-id'"
+CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_itemvaluesmap_itemvalueid_itemid
+ON library."ItemValuesMap" ("ItemValueId", "ItemId");
+
+-- 5. Index for user-specific activity queries
+-- Use case: "Show activity for user X"
+-- Improves queries like: "SELECT * FROM ActivityLogs WHERE UserId='user-id' ORDER BY DateCreated DESC"
+DO $$
+BEGIN
+    IF EXISTS (
+        SELECT 1 FROM information_schema.tables 
+        WHERE table_schema = 'activitylog' 
+        AND table_name = 'ActivityLogs'
+    ) THEN
+        RAISE NOTICE 'Creating activity log index...';
+        CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_activitylogs_userid_datecreated
+        ON activitylog."ActivityLogs" ("UserId", "DateCreated" DESC)
+        WHERE "UserId" IS NOT NULL;
+    ELSE
+        RAISE NOTICE 'ActivityLogs table does not exist. Skipping activity log index.';
+    END IF;
+END $$;
+
+-- 6. Index for episode deduplication by PresentationUniqueKey
+-- Use case: Group and deduplicate episodes (used in GetItems queries)
+-- Improves queries like: "SELECT * FROM BaseItems WHERE Type='Episode' AND PresentationUniqueKey='xyz'"
+CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_baseitems_presentationuniquekey_episodes
+ON library."BaseItems" ("PresentationUniqueKey", "TopParentId", "IsVirtualItem")
+WHERE "Type" = 'MediaBrowser.Controller.Entities.TV.Episode' AND "PresentationUniqueKey" IS NOT NULL;
+
+-- ================================================
+-- Update migration history
+-- ================================================
+
+BEGIN;
+
+INSERT INTO library."__EFMigrationsHistory" ("MigrationId", "ProductVersion")
+VALUES ('20260227000000_AddSupplementaryIndexes', '11.0.0')
+ON CONFLICT ("MigrationId") DO NOTHING;
+
+COMMIT;
+
+-- ================================================
+-- Verification Query
+-- ================================================
+-- Run this to verify all indexes were created successfully:
+
+SELECT 
+    schemaname AS "Schema",
+    tablename AS "Table",
+    indexname AS "Index Name",
+    indexdef AS "Definition"
+FROM pg_indexes
+WHERE indexname IN (
+    'idx_baseitems_type_isvirtualitem_topparentid',
+    'idx_baseitems_topparentid_isfolder',
+    'idx_baseitems_datecreated_filtered',
+    'idx_itemvaluesmap_itemvalueid_itemid',
+    'idx_activitylogs_userid_datecreated',
+    'idx_baseitems_presentationuniquekey_episodes'
+)
+ORDER BY schemaname, tablename, indexname;
+
+-- Expected: 6 rows (or 5 if ActivityLogs table doesn't exist)