修复: 移除未实现的 debug_http_server 模块引用

debug_http_server.py 文件不存在导致启动报 ModuleNotFoundError，
该调试功能非必要，直接删除相关导入和方法调用。

main.py

@@ -18,7 +18,6 @@ for _key in ("http_proxy", "https_proxy", "HTTP_PROXY", "HTTPS_PROXY", "all_prox
 
 from config.settings import get_settings, Settings
 from core.config_sync import get_config_sync_manager, ConfigSyncManager
-from core.debug_http_server import start_debug_http_server
 from core.video_stream import MultiStreamManager, VideoFrame
 from core.preprocessor import ImagePreprocessor
 from core.tensorrt_engine import TensorRTEngine, EngineManager
@@ -56,8 +55,6 @@ class EdgeInferenceService:
         self._screenshot_handler: Optional[ScreenshotHandler] = None
         self._algorithm_manager: Optional[AlgorithmManager] = None
         self._debug_reload_thread: Optional[threading.Thread] = None
-        self._debug_http_server = None
-        self._debug_http_thread: Optional[threading.Thread] = None
         self._heartbeat_thread: Optional[threading.Thread] = None
         self._scheduler_thread: Optional[threading.Thread] = None
         
@@ -305,32 +302,6 @@ class EdgeInferenceService:
         )
         self._debug_reload_thread.start()
 
-    def _start_debug_http_server(self):
-        """本地调试：启动 HTTP 同步接口"""
-        if self._settings.config_sync_mode != "LOCAL":
-            return
-        if not getattr(self._settings, "debug", None) or not self._settings.debug.enabled:
-            return
-        if self._debug_http_server is not None:
-            return
-
-        host = self._settings.debug.host
-        port = self._settings.debug.port
-        self._debug_http_server = start_debug_http_server(host, port)
-
-        def worker():
-            try:
-                self._debug_http_server.serve_forever()
-            except Exception as e:
-                self._logger.warning(f"[DEBUG] HTTP 服务器异常: {e}")
-
-        self._debug_http_thread = threading.Thread(
-            target=worker,
-            name="DebugHttpServer",
-            daemon=True,
-        )
-        self._debug_http_thread.start()
-
     def _start_heartbeat(self):
         """启动心跳守护线程，每 30 秒向云端上报设备状态"""
         def worker():
@@ -403,7 +374,6 @@ class EdgeInferenceService:
         self._init_algorithm_manager()
         self._init_screenshot_handler()
         self._start_debug_reload_watcher()
-        self._start_debug_http_server()
         self._start_heartbeat()
         
         self._performance_stats["start_time"] = datetime.now()
@@ -1122,12 +1092,6 @@ class EdgeInferenceService:
         if self._reporter:
             self._reporter.close()
 
-        if self._debug_http_server:
-            try:
-                self._debug_http_server.shutdown()
-            except Exception:
-                pass
-        
         self._performance_stats["uptime_seconds"] = (
             (datetime.now() - self._performance_stats["start_time"]).total_seconds()
         )