feat: Fehlerbehandlung für WiFi-Verbindungen verbessert und Fallback-AP-Start optimiert; Versionsnummer auf 1.0.77 erhöht

app.py

@@ -1,14 +1,24 @@
 #!/usr/bin/env python3
 """PiCopy v2 - USB Copy Service mit WiFi-Fallback AP"""
 
+import traceback
 import urllib.request as _urlreq
 from pathlib import Path
 
-from flask import Flask, render_template, send_file
+from flask import Flask, render_template, send_file, jsonify
 
-from picopy.config import VERSION, BASE_DIR, RAW_BASE
+from picopy.config import VERSION, BASE_DIR, RAW_BASE, log
+
+# Absoluter Pfad zum templates/-Verzeichnis, unabhängig vom Arbeitsverzeichnis
+_HERE = Path(__file__).parent
+app = Flask(__name__, template_folder=str(_HERE / 'templates'))
+
+
+@app.errorhandler(Exception)
+def _handle_exception(e):
+    log.error('Unbehandelter Fehler:\n' + traceback.format_exc())
+    return jsonify(error=str(e)), 500
 
-app = Flask(__name__, template_folder='templates')
 
 from routes import register_routes
 register_routes(app)
@@ -49,14 +59,21 @@ if __name__ == '__main__':
     from picopy.wifi import wifi_monitor
     from picopy.wireguard import wg_monitor
     from picopy.system import update_check_loop
-    from picopy.config import log, load_cfg
+    from picopy.config import load_cfg
+
+    # Startprüfung: Template vorhanden?
+    tmpl = _HERE / 'templates' / 'index.html'
+    if not tmpl.exists():
+        log.error(f'FEHLER: Template nicht gefunden: {tmpl}')
+    else:
+        log.info(f'Template gefunden: {tmpl}')
 
     cleanup_stale_mounts()
     load_state()
     wg_update_state()
-    threading.Thread(target=usb_monitor, daemon=True).start()
-    threading.Thread(target=wifi_monitor, daemon=True).start()
-    threading.Thread(target=wg_monitor, daemon=True).start()
+    threading.Thread(target=usb_monitor,       daemon=True).start()
+    threading.Thread(target=wifi_monitor,      daemon=True).start()
+    threading.Thread(target=wg_monitor,        daemon=True).start()
     threading.Thread(target=update_check_loop, daemon=True).start()
     if load_cfg().get('wireguard_auto') and WG_CONF.exists():
         threading.Thread(target=wg_connect, daemon=True).start()