Add responsive web UI to Product Store Demo with full CRUD functionality and category management

src/app.py

@@ -1,11 +1,15 @@
-from flask import Flask, jsonify, request, abort
+from flask import Flask, jsonify, request, abort, render_template
 from uuid import uuid4
 
 app = Flask(__name__)
 
 # In-memory product store
 data = {}
 
+@app.route('/')
+def index():
+    return render_template('index.html')
+
 @app.route('/products', methods=['GET'])
 def get_products():
     return jsonify(list(data.values())), 200
@@ -23,7 +27,7 @@ def create_product():
     if not body or 'name' not in body:
         abort(400)
     product_id = str(uuid4())
-    product = {'id': product_id, 'name': body['name'], 'description': body.get('description', '')}
+    product = {'id': product_id, 'name': body['name'], 'description': body.get('description', ''), 'category': body.get('category', '')}
     data[product_id] = product
     return jsonify(product), 201
 
@@ -34,7 +38,7 @@ def update_product(product_id):
     body = request.get_json()
     if not body or 'name' not in body:
         abort(400)
-    data[product_id].update({'name': body['name'], 'description': body.get('description', '')})
+    data[product_id].update({'name': body['name'], 'description': body.get('description', ''), 'category': body.get('category', '')})
     return jsonify(data[product_id]), 200
 
 @app.route('/products/<product_id>', methods=['DELETE'])