Create docs/operations/FAQ_STOP.md — a user-facing "вопрос → ответ" FAQ for
Plane board users explaining the STOP status: what it does, how to cancel a
task, step-by-step consequences (agent stops → jobs cancelled → working branch
and worktree removed → task → cancelled → Telegram+Plane; docs artifacts
preserved, main/prod untouched), deferred cancellation in the critical
merge/deploy window, explicit "STOP does NOT revert merged/deployed code"
(revert is a separate task), restart only via "To Analyse" from scratch, no-op
causes, where to observe the result, and STOP/Approved/Confirm Deploy disambig.
docs-only: src/**, STAGE_TRANSITIONS, QG_CHECKS, check_*, machine-verdict keys
and the DB schema are byte-for-byte untouched. STOP behaviour source of truth
remains ORCH-090 (adr-0026); the FAQ documents and links to it (link-first:
machine details markers/lease/tombstone given by reference, not duplicated).
Add two-way cross-links: docs/overview/business.md (Сценарий 6) and
docs/overview/tech-pipeline.md (Отмена: STOP → cancelled) → FAQ; FAQ → overview
+ ADR ORCH-090. Structure guarded by deterministic anti-drift test
tests/test_faq_stop_doc.py (offline, no network/LLM/subprocess; mirrors
tests/test_lite_setup_doc.py): existence + 8 section anchors + fact bricks +
cross-links + claim-level negative scan (sentence-level, not bare substrings,
so it never false-fails on correctly negating phrases — TR-3, with a
non-evergreen self-check). Full pytest tests/ green (2227 passed).
Refs: ORCH-108
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>