/trekexecute writes run status stopped (dirty-tree stop, entry-condition stop, escalation) and step status blocked (Step 0 sandbox sentinel); the validator rejected the first and warned on the second. Both are real states lib/util/session-orders.mjs already reads (ENDED_BAD), so the validator learns them. The step-status list is exported as PROGRESS_STEP_STATUSES (was an inline literal) so tests check prose against it instead of keeping a copy. docs/HANDOVER-CONTRACTS.md Handover 5 rows updated.
Red: 3 of 4 new tests fail on the pre-fix code (stopped run status, PROGRESS_STEP_STATUSES export, blocked step status). Regression guard (green on arrival): every run status but completed stays resumable.
progress-validator 16/16. Suite 1368 (1366/0/2).
Voyage order 20261005T104513Z-1250514346, plan step 1/5.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Kjell Tore Guttormsen
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