fix: resolve pydantic init error and auto-generate webhook callback URL

- Fix AttributeError by removing self.config assignment before super().__init__()
- Remove callback_base_url from adapter config (no longer needed)
- Add set_webhook_url() method, called by botmgr with auto-built URL
- Add gewechat to webhook URL display list in bot.py
- botmgr now passes webhook_prefix + bot_uuid to adapters via set_webhook_url()

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/langbot/pkg/api/http/service/bot.py

@@ -68,6 +68,7 @@ class BotService:
             'wecomcs',
             'LINE',
             'lark',
+            'gewechat',
         ]:
             webhook_prefix = self.ap.instance_config.data['api'].get('webhook_prefix', 'http://127.0.0.1:5300')
             extra_webhook_prefix = self.ap.instance_config.data['api'].get('extra_webhook_prefix', '')

src/langbot/pkg/platform/sources/gewechat.py

@@ -404,11 +404,7 @@ class GewechatEventConverter(abstract_platform_adapter.AbstractEventConverter):
 class GeWeChatAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter):
     bot: gewechat_client.GewechatClient = None
     bot_uuid: str = None
-
+    webhook_url: str = None
-    bot_account_id: str = ''
-
-    config: dict
-
     message_converter: GewechatMessageConverter = None
     event_converter: GewechatEventConverter = None
 
@@ -418,8 +414,6 @@ class GeWeChatAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter):
     ] = {}
 
     def __init__(self, config: dict, logger: EventLogger):
-        self.config = config
-
         super().__init__(
             config=config,
             logger=logger,
@@ -431,6 +425,9 @@ class GeWeChatAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter):
     def set_bot_uuid(self, bot_uuid: str):
         self.bot_uuid = bot_uuid
 
+    def set_webhook_url(self, webhook_url: str):
+        self.webhook_url = webhook_url
+
     async def handle_unified_webhook(self, bot_uuid: str, path: str, request):
         data = await request.json
         await self.logger.debug(f'Gewechat callback event: {data}')
@@ -578,8 +575,9 @@ class GeWeChatAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter):
         pass
 
     def _build_callback_url(self) -> str:
-        base_url = self.config.get('callback_base_url', '').rstrip('/')
+        if self.webhook_url:
-        return f'{base_url}/api/bots/{self.bot_uuid}'
+            return self.webhook_url
+        raise Exception('webhook_url 未设置，请检查 LangBot 的 api.webhook_prefix 配置')
 
     async def run_async(self):
         if not self.config['token']:

src/langbot/pkg/platform/sources/gewechat.yaml

@@ -31,16 +31,6 @@ spec:
       type: string
       required: true
       default: ""
-    - name: callback_base_url
-      label:
-        en_US: Callback Base URL
-        zh_Hans: 回调基础URL
-      description:
-        en_US: "LangBot public base URL for webhook callbacks, e.g. http://your-server:5300. The full callback URL will be auto-generated as {callback_base_url}/api/bots/{bot_uuid}"
-        zh_Hans: "LangBot 对外可访问的基础URL，如 http://your-server:5300。完整回调地址将自动生成为 {callback_base_url}/api/bots/{bot_uuid}"
-      type: string
-      required: true
-      default: ""
     - name: app_id
       label:
         en_US: App ID