diff --git a/RULES.md b/RULES.md
new file mode 100644
index 0000000..e64941e
--- /dev/null
+++ b/RULES.md
@@ -0,0 +1,20 @@
+# AI Agent Coding Rules
+
+## 1. Code Length Limits
+- **Python files (`.py`)**: Maximum 600 lines per file.
+- **JavaScript/HTML files (`.js`, `.html`)**: Maximum 500 lines per file.
+
+## 2. Architecture
+- Follow the **MVC (Model-View-Controller)** pattern for all new features and refactoring. 
+  - **Models**: Handle data and business logic.
+  - **Views**: Manage presentation and user interface.
+  - **Controllers**: Process input, interact with models, and render views.
+
+## 3. Coding Practices
+- No guessing: All code must be based on clear requirements or existing patterns in the codebase.
+- Avoid unnecessary complexity and keep code readable.
+- Document any non-obvious logic with concise comments.
+
+## 4. General
+- Ensure all code changes comply with these rules before merging or deploying.
+- If a rule cannot be followed, document the reason clearly in the code and notify the team.
diff --git a/app_compatibility.py b/app_compatibility.py
deleted file mode 100644
index 8dcbdc5..0000000
--- a/app_compatibility.py
+++ /dev/null
@@ -1,112 +0,0 @@
-"""
-This file is a compatibility wrapper for the main app.py
-It addresses the Werkzeug import issue by patching the necessary functions
-"""
-import sys
-
-# Add compatibility for url_quote before importing Flask
-try:
-    # First try normal import
-    from werkzeug.urls import url_quote
-except ImportError:
-    # If it fails, create a shim for the missing function
-    import werkzeug
-    from werkzeug.urls import quote as url_quote
-    # Patch the werkzeug.urls module
-    werkzeug.urls.url_quote = url_quote
-    sys.modules['werkzeug.urls'].url_quote = url_quote
-
-# Now import Flask normally
-from flask import Flask, jsonify, request, send_file, render_template, flash
-import os
-import json
-from admin import admin_bp
-
-app = Flask(__name__)
-app.config['STATIC_FOLDER'] = './static'
-app.config['SECRET_KEY'] = 'dev-key-for-demo-only'
-
-# Register blueprints
-app.register_blueprint(admin_bp)
-
-# Load product data from products.json
-def load_products():
-    try:
-        with open('static/products.json', 'r') as f:
-            return json.load(f)
-    except (FileNotFoundError, json.JSONDecodeError):
-        return {}
-
-@app.route('/')
-def index():
-    return render_template('index.html')
-
-@app.route('/login', methods=['GET'])
-def login():
-    # Just return 200 for this example, assuming no auth needed
-    return '', 200
-
-@app.route('/arcontentfields', methods=['GET'])
-def get_ar_content_fields():
-    # Return a fixed set of attributes
-    fields = [
-        {"fieldName": "_id", "label": "Item ID", "editable": "false", "fieldType": "TEXT"},
-        {"fieldName": "_price", "label": "Sale Price", "editable": "true", "fieldType": "TEXT"},
-        {"fieldName": "_image", "label": "Image", "editable": "false", "fieldType": "IMAGE_URI"}
-    ]
-    return jsonify(fields), 200
-
-@app.route('/arinfo', methods=['GET'])
-def get_ar_info():
-    barcode = request.args.get('barcode')
-    products = load_products()
-    if not barcode or barcode not in products:
-        return jsonify({"error": "Item not found"}), 404
-    return jsonify(products[barcode]), 200
-
-@app.route('/images/<path:filename>', methods=['GET'])
-def serve_image(filename):
-    image_path = os.path.join(app.config['STATIC_FOLDER'], 'images', filename)
-    if os.path.exists(image_path):
-        return send_file(image_path)
-    return jsonify({"error": "Image not found"}), 404
-
-@app.route('/barcodes/<path:filename>', methods=['GET'])
-def serve_barcode(filename):
-    barcode_path = os.path.join(app.config['STATIC_FOLDER'], 'barcodes', filename)
-    if os.path.exists(barcode_path):
-        return send_file(barcode_path)
-    return jsonify({"error": "Barcode not found"}), 404
-
-if __name__ == '__main__':
-    # Print helpful information
-    print("=" * 80)
-    print("KCAP Demo Server")
-    print("=" * 80)
-    print("This version includes compatibility fixes for Werkzeug/Flask version mismatches.")
-    print("If you encounter dependency errors, please run: pip install -r requirements.txt")
-    print("=" * 80)
-    
-    # Ensure the required directories exist
-    os.makedirs(os.path.join(app.config['STATIC_FOLDER'], 'images'), exist_ok=True)
-    os.makedirs(os.path.join(app.config['STATIC_FOLDER'], 'barcodes'), exist_ok=True)
-    
-    # If products.json doesn't exist, create it with initial data
-    products_file = os.path.join(app.config['STATIC_FOLDER'], 'products.json')
-    if not os.path.exists(products_file):
-        initial_data = {
-            "123456": [
-                {"fieldName": "_id", "label": "Item ID", "value": "123456", "editable": "false", "fieldType": "TEXT"},
-                {"fieldName": "_price", "label": "Sale Price", "value": "$49.99", "editable": "true", "fieldType": "TEXT"},
-                {"fieldName": "_image", "label": "Image", "value": "/images/123456.png", "editable": "false", "fieldType": "IMAGE_URI"}
-            ],
-            "789012": [
-                {"fieldName": "_id", "label": "Item ID", "value": "789012", "editable": "false", "fieldType": "TEXT"},
-                {"fieldName": "_price", "label": "Sale Price", "value": "$59.99", "editable": "true", "fieldType": "TEXT"},
-                {"fieldName": "_image", "label": "Image", "value": "/images/789012.png", "editable": "false", "fieldType": "IMAGE_URI"}
-            ]
-        }
-        with open(products_file, 'w') as f:
-            json.dump(initial_data, f, indent=2)
-    
-    app.run(port=5555, host="0.0.0.0", debug=True)