feat: 完善周期报告与用户行为分析

- 支持可配置周报月报模板与登录后异步补生成\n- 增加用户行为埋点和后台分析页面\n- 移除主题额度并保留实修回顾结算\n- 修复历史会话续聊上下文丢失

ai_knowledge_base_v2/apps/backend/app/api/user.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from fastapi import APIRouter, Depends
+from fastapi import APIRouter, Depends, Query
 from sqlalchemy.orm import Session
 
 from app.core.database import get_db
@@ -10,8 +10,8 @@ from app.models.user import User
 from app.schemas.user import UserProfile
 from app.services.entitlement_service import EntitlementService, entitlement_dict
 from app.services.growth_profile_service import GrowthProfileService, growth_profile_dict
-from app.services.periodic_report_service import PeriodicReportService, periodic_report_dict
-from app.services.topic_session_service import TopicSessionService
+from app.services.periodic_report_service import PeriodicReportService, periodic_report_user_dict
+from app.services.periodic_report_lazy_service import PeriodicReportLazyService
 
 router = APIRouter()
 
@@ -22,11 +22,7 @@ def profile(
     current_user: User = Depends(get_current_user),
 ) -> dict:
     data = UserProfile.model_validate(current_user).model_dump(mode="json")
-    view = EntitlementService.active_entitlement(
-        db,
-        current_user,
-        monthly_topic_used=TopicSessionService.monthly_used_count(db, current_user.id),
-    )
+    view = EntitlementService.active_entitlement(db, current_user)
     data["entitlement"] = entitlement_dict(view)
     return api_success(data)
 
@@ -67,13 +63,20 @@ def growth_profile(
 @router.get("/periodic-report/list")
 def periodic_reports(
     limit: int = 20,
+    ensure: bool = Query(default=False),
     db: Session = Depends(get_db),
     current_user: User = Depends(get_current_user),
 ) -> dict:
+    entitlement = EntitlementService.active_entitlement(db, current_user)
+    if not entitlement.enable_periodic_reports:
+        return api_success([])
+    if ensure:
+        PeriodicReportLazyService.enqueue_missing_reports(db, user=current_user)
+        db.commit()
     reports = PeriodicReportService.list_user_reports(
         db,
         user_id=current_user.id,
         limit=max(1, min(limit, 50)),
-        statuses=("success",),
+        statuses=("pending", "running", "success", "failed", "empty"),
     )
-    return api_success([periodic_report_dict(item) for item in reports])
+    return api_success([periodic_report_user_dict(item) for item in reports])