fix: change --easy/-ez arg to proper boolean flag

- cli.py: Change --easy from type=str with broken '-ez' short option to action='store_true'
  The '-ez' multi-char short option caused argparse to parse it as -e and -z (both undefined),
  resulting in 'unrecognized arguments' error
- gui.py: Same fix, remove '-E' short option, use action='store_true'
- cmd_serve: Simplify easy_mode check to use boolean directly

Author: BF667

advanced_rvc_inference/api/cli.py

@@ -675,7 +675,7 @@ def cmd_download(args):
 
 def cmd_serve(args):
     """Launch the web interface."""
-    easy_mode = args.easy is not None and args.easy.lower() in ("true", "1", "yes")
+    easy_mode = getattr(args, 'easy', False)
     mode_str = "Easy GUI" if easy_mode else "Full GUI"
     logger.info("Starting web interface (%s)...", mode_str)
 
@@ -936,7 +936,7 @@ def create_parser():
     p.add_argument("--host", default="0.0.0.0", help="Host to bind (default: 0.0.0.0)")
     p.add_argument("--port", type=int, default=7860, help="Port to bind (default: 7860)")
     p.add_argument("--share", action="store_true", help="Create public share URL")
-    p.add_argument("--easy", "-ez", type=str, default=None, help="Launch Easy GUI (simplified mode). Use 'true' to enable.")
+    p.add_argument("--easy", action="store_true", help="Launch Easy GUI (simplified mode)")
     p.set_defaults(func=cmd_serve)
 
     # ----- info -----

advanced_rvc_inference/app/gui.py

@@ -342,10 +342,9 @@ def create_app():
     parser.add_argument("--no-share", action="store_true", help="Disable public URL, use local access only")
     parser.add_argument("--open", action="store_true", help="Open in browser")
     parser.add_argument("--keep-alive", action="store_true", default=True, help="Keep tunnel alive (default: True)")
-    parser.add_argument("--easy", "-E", type=str, default=None, help="Launch Easy GUI (simplified mode). Use 'true' to enable.")
+    parser.add_argument("--easy", action="store_true", help="Launch Easy GUI (simplified mode)")
 
     args = parser.parse_args()
-    easy_mode = args.easy is not None and args.easy.lower() in ("true", "1", "yes")
 
     sys.exit(
         launch(
@@ -354,6 +353,6 @@ def create_app():
             server_port=args.port,
             inbrowser=args.open,
             keep_alive=args.keep_alive,
-            easy=easy_mode,
+            easy=args.easy,
         )
     )