```

feat: 添加AI记忆模块和事件调度系统

- 新增AI记忆模块，支持本地记忆召回和自动写入功能
- 实现事件调度系统，支持批量处理待定事件和重试机制
- 集成心跳监控机制，跟踪API、调度器和工作节点状态
- 扩展仪表板数据统计，包含AI记忆条目和心跳概要
- 添加企业运营分析报告功能，提供财务、采购等多维度分析
- 更新配置设置，增加事件调度和AI记忆相关参数
- 优化任务队列，添加事件分发任务类型
- 扩展审计日志，记录AI记忆操作和事件调度行为
- 实现领域事件模型，支持事件持久化和状态管理
- 添加观察性服务，监控系统组件健康状况
```

app/core/scheduler.py

@@ -1,8 +1,12 @@
+from socket import gethostname
+from typing import Any
+
 from fastapi import FastAPI
 
-from app.core.constants import ActorValue
 from app.core.config import get_settings
+from app.core.constants import ActorValue
 from app.modules.feishu.constants import FeishuReceiveIdType
+from app.modules.observability.constants import HeartbeatComponent
 
 
 def attach_scheduler(app: FastAPI) -> None:
@@ -12,35 +16,53 @@ def attach_scheduler(app: FastAPI) -> None:
     if not settings.scheduler_enabled:
         return
 
+    scheduler = create_scheduler(app)
+
+    @app.on_event("startup")
+    def start_scheduler() -> None:
+        scheduler.start()
+
+    @app.on_event("shutdown")
+    def stop_scheduler() -> None:
+        scheduler.shutdown(wait=False)
+
+
+def create_scheduler(app: FastAPI | None = None) -> Any:
+    """Create the V2/V3 scheduler without requiring a FastAPI process."""
+
     from apscheduler.schedulers.background import BackgroundScheduler
 
     from app.core.database import SessionLocal
     from app.core.task_queue import (
         enqueue_daily_brief_push,
+        enqueue_event_dispatch,
         enqueue_legacy_project_sync,
         enqueue_legacy_task_sync,
         enqueue_project_weekly_push,
     )
+    from app.modules.observability.service import ObservabilityService
     from app.modules.reports.service import ReportService
 
+    settings = get_settings()
     scheduler = BackgroundScheduler(timezone="Asia/Shanghai")
 
     def run_daily_brief() -> None:
         db = SessionLocal()
         try:
             report = ReportService(db).daily_brief()
-            app.state.last_daily_brief = report
+            _set_state(app, "last_daily_brief", report)
             if (
                 settings.feishu_app_id
                 and settings.feishu_app_secret
                 and settings.feishu_default_chat_id
             ):
                 if settings.task_queue_enabled:
-                    app.state.last_daily_brief_dispatch = enqueue_daily_brief_push(
+                    dispatch = enqueue_daily_brief_push(
                         receive_id=settings.feishu_default_chat_id,
                         receive_id_type=FeishuReceiveIdType.CHAT_ID,
                         actor=ActorValue.SCHEDULER,
                     )
+                    _set_state(app, "last_daily_brief_dispatch", dispatch)
                     return
                 ReportService(db).push_report(
                     report,
@@ -55,18 +77,19 @@ def attach_scheduler(app: FastAPI) -> None:
         db = SessionLocal()
         try:
             report = ReportService(db).project_weekly()
-            app.state.last_project_weekly = report
+            _set_state(app, "last_project_weekly", report)
             if (
                 settings.feishu_app_id
                 and settings.feishu_app_secret
                 and settings.feishu_default_chat_id
             ):
                 if settings.task_queue_enabled:
-                    app.state.last_project_weekly_dispatch = enqueue_project_weekly_push(
+                    dispatch = enqueue_project_weekly_push(
                         receive_id=settings.feishu_default_chat_id,
                         receive_id_type=FeishuReceiveIdType.CHAT_ID,
                         actor=ActorValue.SCHEDULER,
                     )
+                    _set_state(app, "last_project_weekly_dispatch", dispatch)
                     return
                 ReportService(db).push_report(
                     report,
@@ -78,14 +101,31 @@ def attach_scheduler(app: FastAPI) -> None:
             db.close()
 
     def run_legacy_project_sync() -> None:
-        app.state.last_legacy_project_sync_dispatch = enqueue_legacy_project_sync(
-            actor=ActorValue.SCHEDULER,
-        )
+        dispatch = enqueue_legacy_project_sync(actor=ActorValue.SCHEDULER)
+        _set_state(app, "last_legacy_project_sync_dispatch", dispatch)
 
     def run_legacy_task_sync() -> None:
-        app.state.last_legacy_task_sync_dispatch = enqueue_legacy_task_sync(
+        dispatch = enqueue_legacy_task_sync(actor=ActorValue.SCHEDULER)
+        _set_state(app, "last_legacy_task_sync_dispatch", dispatch)
+
+    def run_event_dispatch() -> None:
+        dispatch = enqueue_event_dispatch(
+            limit=settings.event_dispatch_batch_size,
             actor=ActorValue.SCHEDULER,
         )
+        _set_state(app, "last_event_dispatch", dispatch)
+
+    def record_scheduler_heartbeat() -> None:
+        db = SessionLocal()
+        try:
+            heartbeat = ObservabilityService(db).record_heartbeat(
+                component=HeartbeatComponent.SCHEDULER,
+                instance_id=gethostname(),
+                actor=ActorValue.SCHEDULER,
+            )
+            _set_state(app, "last_scheduler_heartbeat", heartbeat)
+        finally:
+            db.close()
 
     scheduler.add_job(
         run_daily_brief,
@@ -104,6 +144,21 @@ def attach_scheduler(app: FastAPI) -> None:
         id="project_weekly_push",
         replace_existing=True,
     )
+    if settings.event_dispatch_enabled:
+        scheduler.add_job(
+            run_event_dispatch,
+            trigger="cron",
+            minute=settings.event_dispatch_cron_minute,
+            id="event_dispatch",
+            replace_existing=True,
+        )
+    scheduler.add_job(
+        record_scheduler_heartbeat,
+        trigger="interval",
+        seconds=settings.heartbeat_interval_seconds,
+        id="scheduler_heartbeat",
+        replace_existing=True,
+    )
     if settings.legacy_sync_enabled and settings.legacy_project_query:
         scheduler.add_job(
             run_legacy_project_sync,
@@ -122,11 +177,9 @@ def attach_scheduler(app: FastAPI) -> None:
             id="legacy_task_sync",
             replace_existing=True,
         )
+    return scheduler
 
-    @app.on_event("startup")
-    def start_scheduler() -> None:
-        scheduler.start()
 
-    @app.on_event("shutdown")
-    def stop_scheduler() -> None:
-        scheduler.shutdown(wait=False)
+def _set_state(app: FastAPI | None, key: str, value: Any) -> None:
+    if app is not None:
+        setattr(app.state, key, value)