feat: enhance audio model handling and improve image URL resolution

- Updated `PollinationsAI` to exclude "gemini" model from `audio_models`
- Added logic in `PollinationsAI` to expand `audio_models` with voices from `default_audio_model`
- Appended voice names to `text_models` list in `PollinationsAI` if present in `default_audio_model`
- Modified `PollinationsAI._generate_text` to inject `audio` parameters when a voice model is used
- Updated `save_response_media` call to include voice name in model list
- Changed `OpenaiChat.get_generated_image` to support both `file-service://` and `sediment://` URLs using `conversation_id`
- Modified `OpenaiChat.create_messages` to optionally pass `prompt`
- Adjusted `OpenaiChat.run` to determine `prompt` explicitly and set messages accordingly
- Updated `OpenaiChat.iter_messages_line` to handle `None` in `fields.p` safely
- Passed `prompt` and `conversation_id` to `OpenaiChat.get_generated_image` inside image parsing loop
- Fixed redirect logic in `backend_api.py` to safely handle missing `skip` query param
- Enhanced `render` function in `website.py` to support live file serving with `live` query param
- Added new route `/dist/<path:name>` to serve static files from `DIST_DIR` in `website.py`
- Adjusted `render` to include `.live` suffix in cache filename when applicable
- Modified HTML replacements in `render` to preserve local `dist/` path if `add_origion` is True

g4f/gui/server/backend_api.py

@@ -360,7 +360,7 @@ class Backend_Api(Api):
                 if seed not in ["true", "True", "1"]:
                    random.seed(seed)
                 return redirect(f"/media/{random.choice(match_files)}"), 302
-            return redirect(f"/media/{match_files[int(request.args.get('skip', 0))]}", 302)
+            return redirect(f"/media/{match_files[int(request.args.get('skip') or 0)]}", 302)
 
         @app.route('/backend-api/v2/upload_cookies', methods=['POST'])
         def upload_cookies():