feat(chatbot): integrate OpenRouter API for AI assistance in dashboard

- Added a Chatbot component to the dashboard for user interaction and support.
- Created a README for the Chatbot detailing setup, features, and usage instructions.
- Introduced environment variables for secure API key management.
- Updated app.js to include the Chatbot component.
- Implemented a configuration server to serve API keys securely.
- Enhanced styles for the Chatbot interface to improve user experience.

dashboard/server.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+"""
+Simple configuration server for CityPulse Dashboard Chatbot
+Serves API keys securely without exposing them in frontend code
+"""
+
+import os
+import json
+from flask import Flask, jsonify
+from flask_cors import CORS
+from dotenv import load_dotenv
+
+# Load environment variables
+load_dotenv()
+
+app = Flask(__name__)
+CORS(app)  # Enable CORS for all routes
+
+@app.route('/api/chatbot-config', methods=['GET'])
+def get_chatbot_config():
+    """Serve chatbot configuration securely"""
+    try:
+        config = {
+            'OPENROUTER_API_KEY': os.getenv('OPENROUTER_API_KEY'),
+            'OPENROUTER_BASE_URL': os.getenv('OPENROUTER_BASE_URL', 'https://openrouter.ai/api/v1'),
+            'OPENROUTER_MODEL': os.getenv('OPENROUTER_MODEL', 'x-ai/grok-4-fast:free')
+        }
+
+        # Validate that API key is present
+        if not config['OPENROUTER_API_KEY']:
+            return jsonify({'error': 'API key not configured'}), 500
+
+        return jsonify(config)
+
+    except Exception as e:
+        return jsonify({'error': f'Failed to load configuration: {str(e)}'}), 500
+
+@app.route('/api/config', methods=['GET'])
+def get_config():
+    """Legacy config endpoint"""
+    return get_chatbot_config()
+
+if __name__ == '__main__':
+    print("Starting CityPulse Dashboard Configuration Server...")
+    print("Server will run on http://localhost:3001")
+    print("Make sure your .env file contains OPENROUTER_API_KEY")
+    app.run(host='localhost', port=3001, debug=True)