[instructions] Sync instruction files with release v0.89.21 (add-labels create-if-missing)

[github-actions]

Summary

Ran the Instructions Janitor audit against release v0.89.21 (2026-09-23) and current main HEAD.

The janitor already ran twice since that release (PRs #63142, #63399/#63976, #64732 on 2026-10-01). Checked every .github/aw-touching commit since the last sync (#64732 to HEAD): the fast-moving ledger feature work (#64787, #64813, #64850, #64884, #64911, #64939), the add-labels limit split (#64815), and the PR-review-provenance change (#64805) all self-updated their relevant .github/aw/*.md files within the same PR. Cross-checked memory.md and memory-stateful-patterns.md against the live schema (pkg/parser/schemas/main_workflow_schema.json) and engine_firewall_support.go - both accurate as of HEAD.

Gap found: add-labels gained a create-if-missing option (auto-create missing labels instead of rejecting the call), documented in docs/src/content/docs/reference/safe-outputs.md but missing from the compact .github/aw/safe-outputs-management.md reference. Verified against pkg/workflow/add_labels.go (CreateIfMissing *bool).

Size audit: all 70 .github/aw/*.md files are under their 400-line targets (largest: 397 lines).

Duplication audit: no new duplication introduced by this change.

Files changed

• .github/aw/safe-outputs-management.md: 319 -> 320 lines (documented create-if-missing in the add-labels example).

Documentation commits reviewed

• Preserve PR review provenance for safe supersession #64805, Separate add-labels call and per-call label limits #64815, Remove work-pool ledger support #64850, Expose operation-specific tools for map and work-pool ledgers #64813, Add deterministic work-pool ledger reducer #64787, Add a built-in claims ledger with immutable voting #64884, Remove custom ledger replay and compaction scripts #64911, Rename claims ledger to notes #64939 (ledger + safe-outputs changes since last sync)
• [docs] Self-healing documentation fixes from issue analysis - 2026-10-01 #64865, [docs] docs: unbloat cache-memory reference #64880 (minor doc wording tweaks, no instruction-file impact)
• Add GPT-6.1 Sol support to Copilot workflows #64871 (GPT-6.1 Sol support - no instruction file lists an exhaustive model enum, no change needed)

Test plan

• wc -l .github/aw/*.md confirmed all files remain under size targets
• Cross-checked the new line against pkg/workflow/add_labels.go and the public docs

🤖 Generated with [Claude Code]((claude.com/redacted)

Generated by 🧹 Instructions Janitor · claude · sonnet50 · 328.8 AIC · ⌖ 32.7 AIC · ⊞ 6.4K · ◷

• expires on Oct 4, 2026, 12:49 AM UTC-08:00

---

pr-sous-chef

Generated by 👨‍🍳 PR Sous Chef · pi · gpt54 · 11.2 AIC · ⌖ 8.6 AIC · ⊞ 9.7K · ◷
_{Comment /souschef to run again}

[gh-aw-bot]

@copilot please refresh this PR branch for maintainer review. update_branch was requested by pr-sous-chef in run https://github.com/github/gh-aw/actions/runs/36986208639. After the branch is updated, rerun any required checks and confirm the PR is ready for investigation.

Generated by 👨‍🍳 PR Sous Chef · pi · gpt54 · 11.2 AIC · ⌖ 8.6 AIC · ⊞ 9.7K · ◷
_{Comment /souschef to run again}

[Copilot]

@copilot please refresh this PR branch for maintainer review. update_branch was requested by pr-sous-chef in run https://github.com/github/gh-aw/actions/runs/36986208639. After the branch is updated...

The PR branch already contains the latest main commit (07a624d), so no merge was needed. The Copilot check for this branch is still in progress (run 36986832071), so I can’t confirm it is fully ready until that check finishes.

[github-actions]

🎉 This pull request is included in a new release.

Release: v0.90.3