`@qwen-code /triage` runs the agent as one long workflow step, so the PR
thread stays silent until the first stage comment lands — the maintainer
can't tell it started or how far along it is. The agent's output already
streams live to the Actions log; the run link was only surfaced at the end.
Post a `stage=status` comment up front carrying that live run link, and
finalize the same comment (by marker, so a re-run reuses one comment) to a
terminal state at the end. Covers manual, auto (pull_request_target), and
dispatch triage. Best-effort — a failed status post never fails triage.
Co-authored-by: wenshao <[email protected]>
