fix(event): add 401 handling to prevent infinite retry loop on auth failure

- UploadError struct to distinguish fatal auth errors from network errors
- Clear buffer and throttle on 401/403 to save bandwidth
- Prevent dead-loop retry when token is invalid or expired

.dockerignore

@@ -0,0 +1,11 @@
+.git/
+.gitignore
+build/
+data/
+*.om
+*.onnx
+*.tar.gz
+logs/
+venv/
+__pycache__/
+*.pyc