feat: Add global exception handling

services/middleware/exception_handler.py

@@ -0,0 +1,25 @@
+from fastapi import Request, status
+from fastapi.responses import JSONResponse
+from services.logging import LogService
+import traceback
+
+async def global_exception_handler(request: Request, exc: Exception):
+    """
+    全局异常处理
+    """
+    error_details = {
+        "method": request.method,
+        "url": str(request.url),
+        "headers": dict(request.headers),
+        "exception": str(exc),
+        "traceback": traceback.format_exc(),
+    }
+    await LogService.error(
+        source="global_exception_handler",
+        message=f"Unhandled exception: {exc}",
+        details=error_details
+    )
+    return JSONResponse(
+        status_code=status.HTTP_500_INTERNAL_SERVER_ERROR,
+        content={"error": "Internal Server Error", "detail": str(exc)},
+    )