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* enhance(execute): isolated-executor rejected/over-reaching run fails safe (#1292) When an isolated (worktree) executor run is rejected — the user declines to merge it, the orchestrator surfaces recovery for a blocked/halted plan, or the run over-reached the requested scope — the orchestrator must no longer default/propose recovery by editing the primary checkout (`main`). Absent an explicit guardrail, the LLM orchestrator could improvise "continue on main", inverting the isolation contract at the moment it matters most. Added an ISOLATED-RUN RECOVERY — FAIL SAFE policy: default to a safe halt that offers a fresh, narrowly-scoped worktree or inspect/discard; editing the primary checkout requires explicit, clearly-labeled confirmation and is never the default/proposed option. To respect the ADR-857 phase-6 host-loop size cap on execute-phase.md (it sits just under the pre-phase-6 baseline), the policy is delivered as an extracted reference fragment rather than inline: - New `execute-phase/steps/worktree-recovery-policy.md` holds the recovery policy (the existing FAIL-CLOSED rule #48 for base/HEAD mismatches + the #1292 fail-safe guardrail). No #48 behavior change — moved verbatim. - execute-phase.md references the fragment at the worktree-spawn recovery point, the step-5.5 merge decision, and the stalled-agent "switch to inline execution" menu (which for an isolated run now follows the fail-safe policy). Net effect: execute-phase.md shrinks below its cap. - quick.md carries the fail-safe guardrail inline at its post-return merge/discard decision (quick.md is not size-capped). Scoped to the recovery offer only — no automatic scope-overreach detection (explicitly out of scope per the issue) and no new config key. Adds content regression tests, a USER-GUIDE note, and a workflow size-baseline update. Closes #1292 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> * chore(changeset): Changed fragment for #1292 isolated-executor fail-safe recovery Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>
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