Fixes review findings before Slice 5. Resolver: resolveOutcome + WORK_STATUS_FOR_OUTCOME + lifecycle fixes. Execution: bounded finishAttempt retry, terminal Work status preservation, slice validation, bounded reconciliation with 30s cron. Planning: revision guards, durable submitQuestion, design-approval invalidation. Primitives 69 (+4), backend 22 (+10) tests; root typecheck/build/Ultracite pass.