Split the overloaded `Approved` Plane status: it served BOTH as the human BRD
gate on `analysis` AND as the silent Phase B prod-deploy trigger on `deploy`
(ORCH-036), so a routine approve could launch a self-hosting prod restart.
ORCH-059 introduces a dedicated logical status `confirm_deploy` ("Confirm
Deploy") that triggers ONLY Phase B on `deploy`; `Approved` stays purely a
pipeline gate.
- plane_sync: map "Confirm Deploy" -> "confirm_deploy" in _PLANE_NAME_TO_KEY;
intentionally absent from _DEFAULT_STATES => fail-closed (no UUID -> .get
yields None, no KeyError, no blind deploy).
- webhooks/plane: handle_issue_updated routes "Confirm Deploy" (fail-closed
.get) to new handle_confirm_deploy (guarded to stage=="deploy") ->
_try_advance_stage(confirm_deploy=True).
- stage_engine: advance_stage gains keyword-only confirm_deploy=False; Phase B
block returns early for deploy+finished_agent is None but only initiates the
deploy when confirm_deploy=True; a plain Approved is a deterministic no-op
(returns before check_deploy_status -> no false БАГ-8 rollback).
- Phase A CTA now asks the operator for "Confirm Deploy", not "Approved".
Contracts unchanged: STAGE_TRANSITIONS, QG_CHECKS, check_deploy_status, hook
exit codes, Phases A/C, merge-gate, DB schema. Conditional like ORCH-35/36
(self-hosting only). Docs updated (CLAUDE.md, architecture/README.md, CHANGELOG).
Refs: ORCH-059
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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