feat: 2026-04-15~04-20 累积变更基线 — 多主线合流

主线 1: rns1-customer-coach-api + 04-miniapp-core-business 后端实施
  - 新增 GET /xcx/coaches/{id}/banner 轻量接口
  - performance/records 加 coach_id 参数 + view_board_coach 权限分流
  - coach/customer/performance/board/task 服务层重构
  - fdw_queries 结算单粒度聚合 + consumption_summary 视图统一
  - task_generator 回访宽限 72h + UPSERT 替代策略 + Step 5 保底清理
  - recall_detector settle_type=3 双重限制 + 门店级 resolved

主线 2: 小程序权限分流 + 新增 coach-service-records 管理者视角业绩明细页
  - perf-progress 共享模块去重 task-list/coach-detail 动画逻辑
  - isScattered 散客标记端到端
  - foodDetail/phoneFull/creator* 字段透传

主线 3: P19 指数回测框架 Phase 1+2
  - 3 个指数表 stat_date 日快照模式
  - 新增 DWS_INDEX_BACKFILL / DWS_TASK_SIMULATION 工具任务
  - task_engine 升级 HTTP 实时 + 推演回测双模式

主线 4: Core 维度层启用
  - 新增 CORE_DIM_SYNC 任务（DWD → core 4 维度表）
  - 修复 app 视图空查询问题

主线 5: member_project_tag 改为 LAST_30_VISITS 消费次数窗口

主线 6: 2 个迁移 SQL 已执行（stat_date + member_project_tag 新窗口）
  - schema 基线与 DDL 快照同步

主线 7: 开发机路径迁移 C:\NeoZQYY → C:\Project\NeoZQYY（约 95% 改动量）

附带: 新建运维脚本（churned_customer_report / simulate_historical_tasks /
      backfill_index_snapshots）+ tools/task-analysis/ 任务分析工具

合计 157 文件。未包含中间产物（tmp/ .playwright-mcp/ inspect-* excel/sheet 分析 txt）。
审计记录见下一个 commit。

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

apps/backend/app/routers/xcx_coaches.py

@@ -14,13 +14,27 @@ from fastapi import APIRouter, Depends
 
 from app.auth.dependencies import CurrentUser
 from app.middleware.permission import require_permission
-from app.schemas.xcx_coaches import CoachDetailResponse
+from app.schemas.xcx_coaches import CoachBannerResponse, CoachDetailResponse
 from app.services import coach_service
 from app.trace.decorators import trace_service
 
 router = APIRouter(prefix="/api/xcx/coaches", tags=["小程序助教"])
 
 
+@router.get("/{coach_id}/banner", response_model=CoachBannerResponse)
+@trace_service("获取助教 banner", "Get coach banner")
+async def get_coach_banner(
+    coach_id: int,
+    user: CurrentUser = Depends(require_permission("view_board_coach")),
+):
+    """
+    助教 banner 轻量信息（仅 name / level / store_name）。
+
+    比 /{coach_id} 快一个数量级，供 PERF-2 等只需 banner 的页面调用。
+    """
+    return await coach_service.get_coach_banner(coach_id, user.site_id)
+
+
 @router.get("/{coach_id}", response_model=CoachDetailResponse)
 @trace_service("获取助教详情", "Get coach detail")
 async def get_coach_detail(

apps/backend/app/routers/xcx_performance.py

@@ -11,7 +11,7 @@
 
 from __future__ import annotations
 
-from fastapi import APIRouter, Depends, Query
+from fastapi import APIRouter, Depends, HTTPException, Query
 
 from app.auth.dependencies import CurrentUser
 from app.middleware.permission import require_approved, require_permission
@@ -20,6 +20,7 @@ from app.schemas.xcx_performance import (
     PerformanceRecordsResponse,
 )
 from app.services import performance_service
+from app.services.role import get_user_permissions
 from app.trace.decorators import trace_service
 
 router = APIRouter(prefix="/api/xcx/performance", tags=["小程序绩效"])
@@ -46,9 +47,29 @@ async def get_performance_records(
     month: int = Query(..., ge=1, le=12),
     page: int = Query(1, ge=1),
     page_size: int = Query(20, ge=1, le=100),
-    user: CurrentUser = Depends(require_permission("view_tasks")),
+    coach_id: int | None = Query(None, description="目标助教 ID（仅管理员可用）"),
+    user: CurrentUser = Depends(require_approved()),
 ):
-    """绩效明细（PERF-2）。"""
+    """
+    绩效明细（PERF-2）。
+
+    权限分流（请求路径）：
+    - 不带 coach_id（查自己）：要求 view_tasks 权限，assistant_id 由 user 绑定决定
+    - 带 coach_id（查他人）：要求 view_board_coach 权限（manager/head_coach/staff），
+      assistant_id 直接用传入值；同 site 由 user.site_id 隐式约束
+    """
+    user_perms = await get_user_permissions(user.user_id, user.site_id)
+
+    if coach_id is None:
+        if "view_tasks" not in user_perms:
+            raise HTTPException(status_code=403, detail="权限不足")
+        return await performance_service.get_records(
+            user.user_id, user.site_id, year, month, page, page_size,
+        )
+
+    if "view_board_coach" not in user_perms:
+        raise HTTPException(status_code=403, detail="权限不足")
     return await performance_service.get_records(
-        user.user_id, user.site_id, year, month, page, page_size
+        user.user_id, user.site_id, year, month, page, page_size,
+        assistant_id_override=coach_id,
     )