docs: update CLAUDE.md for Phase 5.4 Widget→CRM events

CLAUDE.md

@@ -145,9 +145,9 @@ Always run lint locally before pushing. Protected branches require PR workflow 
 
 ### Modular Infrastructure (`modules/`)
 
-Foundation layer for modular decomposition (issue #489). Phase 4 complete: all 28 routers migrated (Phase 3), all inline endpoints extracted (Phase 4.1–4.5), all background tasks via `TaskRegistry` (Phase 4.6), all startup helpers + service init extracted to domain `startup.py` modules, global service variables removed (Phase 4.7a/b). Phase 5.1–5.3 complete (EventBus infrastructure, first events, DatasetSynced). Phase 5.4–5.6 and Phase 6 (protocol interfaces) pending.
+Foundation layer for modular decomposition (issue #489). Phase 4 complete: all 28 routers migrated (Phase 3), all inline endpoints extracted (Phase 4.1–4.5), all background tasks via `TaskRegistry` (Phase 4.6), all startup helpers + service init extracted to domain `startup.py` modules, global service variables removed (Phase 4.7a/b). Phase 5.1–5.4 complete (EventBus infrastructure, first events, DatasetSynced, Widget→CRM events). Phase 5.5–5.6 and Phase 6 (protocol interfaces) pending.
 
-- **`EventBus`** (`modules/core/events.py`): In-process async pub/sub. Handlers run concurrently via `asyncio.gather`; exceptions are logged, never propagated to publisher. `BaseEvent` dataclass with auto-timestamp. Singleton in `ServiceContainer.event_bus`. Domain events: `InternetStatusChanged`, `UserRoleChanged`, `SessionRevoked`, `DatasetSynced` (in `modules/core/events.py`), `KnowledgeUpdated` (in `modules/knowledge/events.py`). Subscriptions registered via `setup_event_subscriptions()` in `modules/core/startup.py`, which delegates to domain-specific setup functions (`setup_llm_event_subscriptions()` in `modules/llm/startup.py`, `setup_knowledge_event_subscriptions()` in `modules/knowledge/startup.py`). `DatasetSynced` decouples CRM/ecommerce/kanban from knowledge: publishers write files to disk and emit the event; knowledge handler creates/updates collections, document records, and reloads RAG index.
+- **`EventBus`** (`modules/core/events.py`): In-process async pub/sub. Handlers run concurrently via `asyncio.gather`; exceptions are logged, never propagated to publisher. `BaseEvent` dataclass with auto-timestamp. Singleton in `ServiceContainer.event_bus`. Domain events: `InternetStatusChanged`, `UserRoleChanged`, `SessionRevoked`, `DatasetSynced` (in `modules/core/events.py`), `KnowledgeUpdated` (in `modules/knowledge/events.py`), `WidgetSessionCreated`, `WidgetMessageSent`, `WidgetContactSubmitted` (in `modules/channels/widget/events.py`). Subscriptions registered via `setup_event_subscriptions()` in `modules/core/startup.py`, which delegates to domain-specific setup functions (`setup_llm_event_subscriptions()` in `modules/llm/startup.py`, `setup_knowledge_event_subscriptions()` in `modules/knowledge/startup.py`, `setup_crm_event_subscriptions()` in `modules/crm/startup.py`). `DatasetSynced` decouples CRM/ecommerce/kanban from knowledge. Widget events decouple widget router from amoCRM: widget publishes events, CRM domain handles lead/contact/note creation reactively.
 - **`TaskRegistry`** (`modules/core/tasks.py`): Named background tasks — periodic (interval-based) or one-shot. `start_all()` / `cancel_all(timeout)` lifecycle. `TaskInfo` dataclass tracks status, run count, last error. 6 tasks registered in `startup_event()`: `session-cleanup` (1h), `periodic-vacuum` (7d), `kanban-sync` (15min), `woocommerce-sync` (daily 23:00 UTC), `wiki-embeddings` (one-shot), `wiki-collection-indexes` (one-shot). Task functions in `modules/core/maintenance.py`, `modules/knowledge/tasks.py`, `modules/kanban/tasks.py`, `modules/ecommerce/tasks.py`.
 - **`HealthRegistry`** (`modules/core/health.py`): Modular health checks with per-check timeout (`asyncio.wait_for`). Status aggregation: all ok → ok, any degraded → degraded, any error → error.