Fix 502 after update: safe startup, single DB init, healthcheck

Co-authored-by: Cursor <cursoragent@cursor.com>

app/__init__.py

@@ -21,7 +21,7 @@ def load_user(user_id):
     return db.session.get(User, int(user_id))
 
 
-def create_app():
+def create_app(setup_database=True):
     app = Flask(__name__)
 
     app.config["SECRET_KEY"] = os.getenv("SECRET_KEY", "dev-secret-change-me")
@@ -63,7 +63,10 @@ def create_app():
     def inject_banners():
         from app.banner_service import get_banners_by_position
 
-        return {"site_banners": get_banners_by_position()}
+        try:
+            return {"site_banners": get_banners_by_position()}
+        except Exception:
+            return {"site_banners": {}}
 
     with app.app_context():
         from app.models import (  # noqa: F401
@@ -79,23 +82,11 @@ def create_app():
         )
 
         db.create_all()
-        from app.bootstrap import (
-            create_first_admin,
-            ensure_default_group,
-            ensure_group_limit_columns,
-            ensure_photo_storage_column,
-            ensure_schema,
-            ensure_site_settings,
-        )
-        from app.folders import ensure_folder_schema
 
-        ensure_schema()
-        ensure_default_group(app)
-        ensure_group_limit_columns()
-        ensure_folder_schema()
-        ensure_site_settings(app)
-        ensure_photo_storage_column()
-        create_first_admin(app)
+        if setup_database and os.getenv("SKIP_DB_INIT") != "1":
+            from app.bootstrap import run_database_setup
+
+            run_database_setup(app)
 
     return app