Add orthogonal role:* (single-active owner) and hazard:* (additive warning)
lifecycle labels plus status:changes-requested, folding the #603 state:*
vocabulary into the canonical status:* set rather than a conflicting parallel
prefix.
- issue_workflow_labels.py: ROLE_/HAZARD_ specs + frozensets; role/hazard
transition maps and helpers (transition_role_labels, add/clear_hazard_label,
canonical_role_label, canonical_hazard_label, is_discussion,
is_implementation_candidate, requires_blocking_reason); state:* -> status:*
synonym transitions; assess_issue_labels surfaces role/hazard dims and flags
multiple active role labels
- docs/label-taxonomy.md: role, hazard, state->canonical migration, and
allocator cross-check sections
- tests: role/hazard/discussion/blocking-reason/state-synonym coverage
- manage_labels.py seeds the new labels automatically via CANONICAL_LABEL_SPECS
Labels remain advisory; control-plane leases (#601) and live PR state stay the
source of truth for mutations (#603 AC2).
Closes#603
Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]>