fix: add eventlet monkey_patch and favicon route

src/app.py

@@ -2,12 +2,15 @@
 TCKRTUIYO - Rainfall Station RTU Web Interface
 Flask Backend with SocketIO for Real-Time Updates
 """
+import eventlet
+eventlet.monkey_patch()
+
 import os
 import json
 import time
 import threading
 from datetime import datetime
-from flask import Flask, render_template, jsonify, request
+from flask import Flask, render_template, jsonify, request, send_from_directory
 from flask_socketio import SocketIO, emit
 
 # Configuration
@@ -18,6 +21,11 @@ app.config['JSON_SORT_KEYS'] = False
 # SocketIO with eventlet for production performance
 socketio = SocketIO(app, cors_allowed_origins="*", async_mode='eventlet')
 
+# Favicon route
+@app.route('/favicon.ico')
+def favicon():
+    return send_from_directory(os.path.join(os.path.dirname(__file__), 'static'), 'logo/[LOGO] TCK.svg', mimetype='image/svg+xml')
+
 # Data paths
 DATA_DIR = os.path.join(os.path.dirname(__file__), 'data')
 SETTINGS_FILE = os.path.join(DATA_DIR, 'settings.json')