feat(pos): register inventory + catalog blueprints, add page routes

pos/app.py

@@ -10,6 +10,12 @@ def create_app():
     from blueprints.config_bp import config_bp
     app.register_blueprint(config_bp)
 
+    from blueprints.inventory_bp import inventory_bp
+    app.register_blueprint(inventory_bp)
+
+    from blueprints.catalog_bp import catalog_bp
+    app.register_blueprint(catalog_bp)
+
     # Health check
     @app.route('/pos/health')
     def health():
@@ -21,6 +27,14 @@ def create_app():
     def pos_login():
         return render_template('login.html')
 
+    @app.route('/pos/catalog')
+    def pos_catalog():
+        return render_template('catalog.html')
+
+    @app.route('/pos/inventory')
+    def pos_inventory():
+        return render_template('inventory.html')
+
     @app.route('/pos/static/<path:filename>')
     def pos_static(filename):
         return send_from_directory('static', filename)