ГЛОБАЛЬНЫЙ РЕФАКТОРИНГ АРХИТЕКТУРЫ - Рефакторинг этапов 3.1 - Добавлен строгий контракт семантического извлечения (валидность, качество, reason-codes, рекомендация применять canonical). Подключен semantic guard в predecompose/runtime: мягкое отклонение плохого canonical: отдельный safe-кейс для сырого полезного raw-фрагмента; fallback теперь выигрывает только когда это оправдано. Подключty semantic arbitration в tool-gate

docs/TECH/1CLLMARCH-FACT.md

@@ -2349,6 +2349,23 @@ Plan (Stage 3):
    - Coverage critic threshold before final answer.
    - Reason-code taxonomy normalized.
 
+Implemented in current pass (Stage 3.1 kick-off):
+1. Added strict semantic extraction contract for address predecompose:
+   - `address_semantic_extraction_contract_v1` built from `source_message + canonical_message + predecompose contract`.
+   - Captures: extraction snapshot, guard hints, quality, validity, apply-canonical recommendation, reason codes.
+2. Added semantic guard integration in predecompose runtime:
+   - New rejection path for low-value/unsafe canonical rewrites (`normalized_fragment_rejected_semantic_guard`).
+   - Fallback preference updated: deterministic fallback can win over LLM canonical when semantic contract rejects rewrite.
+3. Added semantic arbitration integration in tool-gate:
+   - `resolveAddressToolGateDecision(...)` now honors `apply_canonical_recommended`.
+   - New skip reason: `llm_predecompose_semantic_guard_rejected`.
+4. Extended runtime/debug observability:
+   - semantic contract propagated through address tool-gate, deep debug payload, and living chat debug payload.
+   - orchestration contract now includes semantic guard fields (`semantic_contract_valid`, `semantic_apply_canonical_recommended`, `semantic_reason_codes`).
+5. Added focused regression tests:
+   - `assistantSemanticExtractionContract.test.ts` (new)
+   - Existing router/chat regressions revalidated (`assistantLivingRouter.test.ts`, `assistantLivingChatMode.test.ts`).
+
 Acceptance (Stage 3):
 1. LLM outputs strictly validated schema for extraction/decomposition (no free-form).
 2. Deterministic guards can block or downgrade answers when evidence insufficient.