v1.6.0

Added

• End-to-end request correlation — every HTTP call of a single backup run (init → chunks → finalize → status poll) now carries one shared X-Request-Id, so a run can be matched across the agent log and the control-plane log with a single grep <request_id>. Additive and backward-compatible: an un-upgraded server simply ignores the header.
• Server error surfacing — when the control plane returns a 5xx, the agent reads the structured error_id / request_id from the response (body or X-Request-Id header) and appends them to the failure message and logs (e.g. Failed to initialize upload: HTTP 500 - Internal Server Error (error_id=…, request_id=…)), turning an opaque "Server Error" into a pointer straight to the matching server-side exception. All server-supplied fields (the message and the ids) are sanitized — control characters stripped, length capped — before they reach a log line; the token is never logged.
• Structured upload logs — chunked-upload log entries now include stage (init_upload / send_chunk / finalize / poll_status), upload_id, attempt, chunk_number and status for faster diagnosis.

Changed

• Upload failures are now logged at error level instead of emergency — a transient upload failure is no longer the highest severity, so genuine emergencies stand out.

Full Changelog: v1.5.0...v1.6.0