# yaml-language-server: $schema=https://docs.mergify.com/mergify-configuration-schema.json
extends: mergify
merge_protections_settings:
  reporting_method: check-runs

pull_request_rules:
  - name: Flag product T-ID format violation in PR title or commit messages
    description: >
      Product-repo convention: the PR title AND every commit's first line must
      match `T<digits>: <text>` (optional `scope: ` prefix). The title is always
      checked; the per-commit check is exempted when a maintainer applies the
      `legacy` label — an escape hatch for grandfathered PRs whose commit history
      cannot be rewritten (repos that squash-merge AND block force-push, e.g.
      vyos.vyos enforces `non_fast_forward` on ~ALL branches with zero bypass).
      New PRs are still nudged toward the convention; `legacy` is the deliberate,
      maintainer-controlled opt-out. Relocated from the central config (T8966)
      so the convention is opt-in per product repo. Name is intentionally
      distinct from any central rule name so this stays additive (not an
      `extends:` override). Legacy-label escape added 2026-06-08 (T8966).
    conditions:
      - '-closed'
      - '-merged'
      - '-author~=\[bot\]$'
      - 'author!=copilot-swe-agent'
      - 'author!=vyosbot'
      - or:
          - '-title~=^(([a-zA-Z0-9\-_.]+:\s)?)T\d+:\s+[^\s]+.*'
          - and:
              - 'label!=legacy'
              - 'commits[*].commit_message~=^(?!(([a-zA-Z0-9\-_.]+:\s)?)T\d+:\s+[^\s]+).*'
    actions:
      label:
        toggle:
          - invalid-task-id