changes to mobile styling in modal view, complete reword of backend worker system

app/__init__.py

@@ -13,6 +13,9 @@ import sqlite3
 db = SQLAlchemy()
 migrate = Migrate()
 
+# Celery instance - will be configured with app context in create_app
+celery = None
+
 
 # =============================================================================
 # CLI Commands
@@ -25,6 +28,34 @@ def version_check_command():
     from app.utils.version_migration import check_and_run_migrations
     check_and_run_migrations()
 
+
+@click.command("celery-worker")
+@click.option('--queues', '-Q', default='scan,import,thumbnail,sidecar,default',
+              help='Comma-separated list of queues to consume')
+@click.option('--concurrency', '-c', default=2, type=int,
+              help='Number of worker processes')
+@with_appcontext
+def celery_worker_command(queues, concurrency):
+    """Start a Celery worker for processing import tasks."""
+    from app.celery_app import celery as celery_app
+    celery_app.worker_main([
+        'worker',
+        f'--queues={queues}',
+        f'--concurrency={concurrency}',
+        '--loglevel=info'
+    ])
+
+
+@click.command("celery-beat")
+@with_appcontext
+def celery_beat_command():
+    """Start Celery Beat scheduler for periodic tasks."""
+    from app.celery_app import celery as celery_app
+    celery_app.worker_main([
+        'beat',
+        '--loglevel=info'
+    ])
+
 @event.listens_for(Engine, "connect")
 def set_sqlite_pragma(dbapi_connection, connection_record):
     # Only apply to SQLite connections
@@ -54,5 +85,13 @@ def create_app(config_class='config.Config'):
 
     # Register CLI commands
     app.cli.add_command(version_check_command)
+    app.cli.add_command(celery_worker_command)
+    app.cli.add_command(celery_beat_command)
+
+    # Initialize Celery with Flask app context
+    from app.celery_app import make_celery
+    global celery
+    celery = make_celery(app)
+    app.celery = celery
 
     return app