Add multiple features: auth, uploads, queue management, and filters

- Replace email with username for authentication
  - Update User model, schemas, and auth endpoints
  - Update frontend login and register views
  - Add migration to remove email column

- Add multiple track upload support
  - New backend endpoint for bulk upload
  - Frontend multi-file selection with progress
  - Auto-extract metadata from ID3 tags
  - Visual upload progress for each file

- Prevent duplicate tracks in room queue
  - Backend validation for duplicates
  - Visual indication of tracks already in queue
  - Error handling with user feedback

- Add bulk track selection for rooms
  - Multi-select mode with checkboxes
  - Bulk add endpoint with duplicate filtering
  - Selection counter and controls

- Add track filters in room modal
  - Search by title and artist
  - Filter by "My tracks"
  - Filter by "Not in queue"
  - Live filtering with result counter

- Improve Makefile
  - Add build-backend and build-frontend commands
  - Add rebuild-backend and rebuild-frontend commands
  - Add rebuild-clean variants
  - Update migrations to run in Docker

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Makefile

@@ -1,4 +1,4 @@
-.PHONY: help dev dev-backend dev-frontend install install-backend install-frontend build up down logs migrate
+.PHONY: help dev dev-backend dev-frontend install install-backend install-frontend build build-backend build-frontend rebuild rebuild-backend rebuild-frontend rebuild-clean rebuild-clean-backend rebuild-clean-frontend up down logs migrate
 
 help:
 	@echo "EnigFM - Команды:"
@@ -8,7 +8,15 @@ help:
 	@echo "  make dev-backend    - Запустить только backend"
 	@echo "  make dev-frontend   - Запустить только frontend"
 	@echo ""
-	@echo "  make build          - Собрать Docker образы"
+	@echo "  make build          - Собрать Docker образы (backend + frontend)"
+	@echo "  make build-backend  - Собрать только backend"
+	@echo "  make build-frontend - Собрать только frontend"
+	@echo "  make rebuild          - Пересобрать и запустить всё"
+	@echo "  make rebuild-backend  - Пересобрать и перезапустить только backend"
+	@echo "  make rebuild-frontend - Пересобрать и перезапустить только frontend"
+	@echo "  make rebuild-clean    - Пересобрать всё без кеша"
+	@echo "  make rebuild-clean-backend  - Пересобрать backend без кеша"
+	@echo "  make rebuild-clean-frontend - Пересобрать frontend без кеша"
 	@echo "  make up             - Запустить через Docker"
 	@echo "  make down           - Остановить Docker"
 	@echo "  make logs           - Показать логи Docker"
@@ -16,6 +24,7 @@ help:
 	@echo "  make migrate        - Создать миграцию БД"
 	@echo "  make migrate-up     - Применить миграции"
 	@echo "  make migrate-down   - Откатить миграцию"
+	@echo "  make migrate-rebuild - Пересобрать контейнеры и применить миграции"
 
 # Установка зависимостей
 install: install-backend install-frontend
@@ -41,6 +50,12 @@ dev-frontend:
 build:
 	docker-compose build
 
+build-backend:
+	docker-compose build backend
+
+build-frontend:
+	docker-compose build frontend
+
 up:
 	docker-compose up -d
 
@@ -51,11 +66,35 @@ rebuild:
 	docker-compose down
 	docker-compose up -d --build
 
+rebuild-backend:
+	docker-compose stop backend
+	docker-compose rm -f backend
+	docker-compose build backend
+	docker-compose up -d backend
+
+rebuild-frontend:
+	docker-compose stop frontend
+	docker-compose rm -f frontend
+	docker-compose build frontend
+	docker-compose up -d frontend
+
 rebuild-clean:
 	docker-compose down
 	docker-compose build --no-cache
 	docker-compose up -d
 
+rebuild-clean-backend:
+	docker-compose stop backend
+	docker-compose rm -f backend
+	docker-compose build --no-cache backend
+	docker-compose up -d backend
+
+rebuild-clean-frontend:
+	docker-compose stop frontend
+	docker-compose rm -f frontend
+	docker-compose build --no-cache frontend
+	docker-compose up -d frontend
+
 logs:
 	docker-compose logs -f
 
@@ -67,13 +106,20 @@ logs-frontend:
 
 # Миграции
 migrate:
-	cd backend && alembic revision --autogenerate -m "$(msg)"
+	docker-compose exec backend alembic revision --autogenerate -m "$(msg)"
 
 migrate-up:
-	cd backend && alembic upgrade head
+	docker-compose exec backend alembic upgrade head
 
 migrate-down:
-	cd backend && alembic downgrade -1
+	docker-compose exec backend alembic downgrade -1
+
+migrate-rebuild:
+	docker-compose down
+	docker-compose up -d --build
+	@echo "Waiting for containers to start..."
+	@sleep 5
+	docker-compose exec backend alembic upgrade head
 
 # БД
 db-shell: