[instructions] Sync instruction files with release v0.86.2

[github-actions]

Summary

Latest release: v0.86.2 (2026-08-11). Two prior sync PRs (#52677, #52262) already covered most drift since then. This PR closes the remaining small gap: 3 commits touched .github/aw/ or docs/ after the last sync (04:38 UTC today) that were not yet reflected:

• 80207fc Remove Pydantic engine and smoke workflow — verified: no .github/aw/*.md file referenced Pydantic, no action needed.
• d191c58 / ab08a93 — GitHub Actions version bumps and a digest-pin removal, both confined to .github/aw/actions-lock.json (a generated data file, not instruction prose) — no action needed.
• 595e472 docs: add glossary entries for watchdog, harness retry, MCP partial results, init flags — watchdog/harness-retry were already documented in syntax-engine.md; two gaps remained and are fixed here.
• 82e5b12 safe-outputs spec bump to 1.28.3 — editorial-only (added a scratchpad-removal tracking link), no normative change, no instruction update needed.

Changes

• .github/aw/cli-commands.md: gh aw init section now documents that the custom agent (.github/agents/agentic-workflows.md) and MCP server integration are Copilot-engine-only artifacts, and lists --no-mcp/--no-agent to skip them.
• .github/aw/agentic-workflows-mcp.md: logs tool reference now notes the partial: true response pattern (gateway timeout / token budget guardrail) and that callers should reissue with after_run_id/before_run_id to continue.

Audits performed

• Release/change audit: compared .github/aw/ and docs/ commits since v0.86.2, isolated to commits after the last sync PR.
• Size audit: wc -l .github/aw/*.md — all files under their target limits (largest is github-mcp-server.md at 390 lines). No file crossed 400 lines before or after this change.
• Duplication audit: no new duplication introduced; both edits are one-line additions to their single canonical file.
• Accuracy audit: checked pkg/workflow/compiler_types.go, pkg/workflow/safe_outputs_config.go, pkg/parser/schemas/main_workflow_schema.json for changes since the last sync — none found, so no safe-outputs/schema instruction updates were needed.

Before/after line counts

File	Before	After
.github/aw/cli-commands.md	295	298
.github/aw/agentic-workflows-mcp.md	45	47

Both remain well under the 400-line target.

Generated by 🧹 Instructions Janitor · sonnet50 · 112.8 AIC · ⌖ 8 AIC · ⊞ 6K · ◷

• expires on Aug 17, 2026, 12:49 AM UTC-08:00

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Generated by 👨‍🍳 PR Sous Chef · gpt54 · 19.4 AIC · ⌖ 6.65 AIC · ⊞ 6.3K · ◷
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Run context: https://github.com/github/gh-aw/actions/runs/31877852001> Generated by 👨‍🍳 PR Sous Chef · gpt54 · 9.26 AIC · ⌖ 5.69 AIC · ⊞ 8.7K · ◷

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[github-actions]

Thanks for keeping the instructions in sync with the release! 🧹

This PR looks great:

• Clear scope: Updates two instruction files with release v0.86.2 documentation—exactly one thing.
• Well documented: The PR body is thorough with audits performed (release/change, size, duplication, accuracy), before/after line counts, and explicit rationale for what did not need updates.
• Appropriately sized: 9 total lines changed across two files.

The PR is ready for review.

Generated by ✅ Contribution Check · auto · 50.4 AIC · ⌖ 3.33 AIC · ⊞ 9.1K · ◷

[gh-aw-bot]

@copilot Quick triage for maintainer-ready follow-up:

Please refresh the branch if needed, address any remaining maintainer-facing follow-up, and run the pr-finisher skill before handing this PR back to maintainers.

Outstanding review items (newest first):

• No unresolved review threads were surfaced from available context; please verify current maintainer expectations before handoff.

Failed checks from the compact candidate set:

• None listed.

Branch update was requested automatically for this run when GitHub allows it.
Run context: https://github.com/github/gh-aw/actions/runs/31875928309

Generated by 👨‍🍳 PR Sous Chef · gpt54 · 19.4 AIC · ⌖ 6.65 AIC · ⊞ 6.3K · ◷
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[Copilot]

@copilot Quick triage for maintainer-ready follow-up:

Please refresh the branch if needed, address any remaining maintainer-facing follow-up, and run the pr-finisher skill before handing this PR ba...

Completed pr-finisher against eac3cbb. The branch is current with main, no review threads remain, prior action_required runs contained zero failed jobs, and local format, lint, unit/progress, full test, and recompile validation passed. No additional changes were needed.

[gh-aw-bot]

@copilot Quick triage for maintainer-ready follow-up:

Please refresh the branch if needed, review any remaining maintainer-facing follow-up, and run the pr-finisher skill before handing this PR back to maintainers.

Outstanding review items (newest first):

• No unresolved review threads were available from current context; please verify the latest PR discussion state before handoff.

Failed checks from the compact candidate set:

• None listed.

Branch update was requested automatically for this run when GitHub allows it.
Run context: https://github.com/github/gh-aw/actions/runs/31877852001

Generated by 👨‍🍳 PR Sous Chef · gpt54 · 9.26 AIC · ⌖ 5.69 AIC · ⊞ 8.7K · ◷
_{Comment /souschef to run again}