[Epic] Label governance stabilisation and automation hardening

[ashleyshaw]

Epic Summary

Stabilise label governance by resolving orphan labels, enforcing canonical label definitions, and hardening workflow policies that consume label metadata.

Linked Stories/Tasks

• 🏷️ Orphan Labels Detected (30) #95 Orphan labels audit and remediation
• [Workflows/Docs] Canonical labels + org seeding workflow #66 Canonical labels and seeding workflow
• [Workflows] Scope README regen to changed paths with concurrency guard #67 README regeneration scoping and concurrency guard
• [Workflows] Enforce CodeRabbit before Copilot on PRs #69 CodeRabbit-before-Copilot review order enforcement

Acceptance Criteria

• Orphan label set is remediated and documented.
• Canonical label source of truth and seeding workflow are aligned.
• README regeneration automation is scoped to changed paths and race-safe.
• Review order policy is codified and validated in workflows.

Dependencies / Blockers

• Needs current inventory output from 🏷️ Orphan Labels Detected (30) #95 before final canonical cleanup.
• Requires workflow validation in CI-compatible local commands.

Additional Context

This epic belongs to .github/projects/active/label-governance-stabilisation-2026-05-27/.

[linear-code]

LS-719

[ashleyshaw]

Tracking links for this epic:\n- #95 (batch-00 triage)\n- #66 (batch-01 execution)\n- #67 (batch-01 execution)\n- #69 (batch-01 execution)\n\nSequencing note: #95 first, then #66/#67/#69 as execution tasks.

[ashleyshaw]

Progress update (execution started from #95):\n\nCompleted:\n- Refreshed #95 orphan-label audit against current .\n- Confirmed counts: repo labels 180, canonical 149, canonical missing 0, orphan 31.\n- Confirmed active-use scan: orphan labels on open issues/PRs = 0.\n\nLinks updated:\n- #95: inventory + interpretation + proposed disposition path\n- #66, #67, #69: marked sequencing dependency satisfied and ready to execute in parallel\n\nNext in execution order:\n1. Finalise orphan disposition policy in #95 (remove vs exception list)\n2. Execute canonical/seeding hardening in #66\n3. Execute README regen scope/concurrency in #67\n4. Execute review-order enforcement in #69

[ashleyshaw]

Progress update (execution started from #95) — corrected repost (supersedes malformed shell-expanded comment)

Completed:

• Refreshed 🏷️ Orphan Labels Detected (30) #95 orphan-label audit against current develop.
• Confirmed counts: repo labels 180, canonical 149, canonical missing 0, orphan 31.
• Confirmed active-use scan: orphan labels on open issues/PRs = 0.

Links updated:

• 🏷️ Orphan Labels Detected (30) #95: inventory + interpretation + disposition options
• [Workflows/Docs] Canonical labels + org seeding workflow #66, [Workflows] Scope README regen to changed paths with concurrency guard #67, [Workflows] Enforce CodeRabbit before Copilot on PRs #69: sequencing dependency marked satisfied and ready to execute in parallel

Next in execution order:

1. Finalise orphan disposition policy in 🏷️ Orphan Labels Detected (30) #95 (remove vs exception list)
2. Execute canonical/seeding hardening in [Workflows/Docs] Canonical labels + org seeding workflow #66
3. Execute README regen scope/concurrency in [Workflows] Scope README regen to changed paths with concurrency guard #67
4. Execute review-order enforcement in [Workflows] Enforce CodeRabbit before Copilot on PRs #69