moving styling and views to be more consistent and for gallery view to be less cumbersome.

app/__init__.py

@@ -1,6 +1,8 @@
 # app/__init__.py
 
+import click
 from flask import Flask
+from flask.cli import with_appcontext
 from flask_sqlalchemy import SQLAlchemy
 from flask_migrate import Migrate
 from werkzeug.middleware.proxy_fix import ProxyFix
@@ -11,6 +13,18 @@ import sqlite3
 db = SQLAlchemy()
 migrate = Migrate()
 
+
+# =============================================================================
+# CLI Commands
+# =============================================================================
+
+@click.command("version-check")
+@with_appcontext
+def version_check_command():
+    """Check app version and run data migrations if needed (e.g., phash recomputation)."""
+    from app.utils.version_migration import check_and_run_migrations
+    check_and_run_migrations()
+
 @event.listens_for(Engine, "connect")
 def set_sqlite_pragma(dbapi_connection, connection_record):
     # Only apply to SQLite connections
@@ -38,4 +52,7 @@ def create_app(config_class='config.Config'):
     def datetimeformat(value, format="%Y-%m-%d"):
         return value.strftime(format) if value else ""
 
+    # Register CLI commands
+    app.cli.add_command(version_check_command)
+
     return app