2.18.2 — Claim heartbeat lifecycle fix, docs/scripts cleanup, evidence validation

Fixed — Claim heartbeat lifecycle, evidence validation, docs hygiene & coordinator face

• Claim heartbeat lifecycle binding (F-01): HeartbeatRecord now records claim_acquired_at tying the heartbeat to the specific ownership session. isStale ignores orphaned heartbeats whose claim_acquired_at does not match the active claim, preventing subsequent claim holders from being spuriously flagged as stale after 10 minutes. readHeartbeat returns { corrupt: true } on damaged JSON files so that corruption triggers fail-closed staleness. writeHeartbeat validates that the claim exists, is active, and is owned by writer. releaseClaim and acquireClaim takeover now cleanly remove stale .heartbeat files alongside the claim JSON.
• EvidenceRef schema validation & council metrics (F-02): EvidenceRef now enforces that at least one of memory_id or path is present and non-empty via Zod refinement. Analytics exposes structured_claims_count alongside audited_count and filters whitespace-only claim entries.
• Documentation & demo scripts hygiene (F-04): Demo scenarios scenario-6.sh, scenario-7.sh, scenario-8.sh and scenario-4.sh in scripts/demo/ no longer invoke removed wolf run or wolf learn commands, switching to canonical wolf propose, wolf doctor, wolf validate and wolf session wrap-up. scripts/bench/ comments cleaned of wolf run. Stale references to "25 активных типов" in docs/guide/architecture.md and docs/guide/user-guide.md updated to "8 core-типов + расширения". Stale wolf thread create invocations updated to wolf thread add. E2E audit tests/e2e/docs-audit.test.ts now enforces token cleanliness across scripts/ as well.
• Coordinator L0 role contract (F-03): In templates/base/agents/mr-wolf.md and .opencode/agents/mr-wolf.md, replaced "безликий: отсутствие playbook — данные" with the coordinator face contract (procedural coordination & complaint loop protocol).