Xinmin Zeng 90e23bfd09
fix(ci): consolidate PR/issue labeling and fix reviewing-job crash + label thrash (#3455)
* fix(ci): consolidate PR/issue labeling into one triage.yml; fix reviewing crash & label thrash

- Replace pr-labeler + pr-triage + issue-triage with a single triage.yml; drop actions/labeler.
  Its sync-labels removed labels outside its config (clobbered size/risk/needs-validation and
  could clobber maintainer labels). Area is now computed in-script and reconciled only within
  owned namespaces (area:/size//risk:/needs-validation); first-time/reviewing are add-only.
- reviewing: gate on author_association in {OWNER,MEMBER,COLLABORATOR} + user.type==='User'
  instead of getCollaboratorPermissionLevel, which 404'd on bot reviewers ('Copilot is not a
  user') and crashed the job. Excludes all review bots with no denylist and no API call.
- Read live state (listFiles + listLabelsOnIssue) not the stale event payload, so rapid
  synchronize events converge instead of thrashing. Size churn excludes lockfiles/snapshots.

* fix(ci): read labels live via paginate in reviewing & issue-triage jobs

Address review feedback on #3455:
- reviewing: listLabelsOnIssue now paginates (per_page:100) instead of the
  default 30, matching pr-labels, so a 'reviewing' label is never missed on
  PRs with many labels.
- issue-triage: read live labels via the API instead of the event payload,
  consistent with the live-state reads documented in the header.
2026-06-09 11:14:19 +08:00
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