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/schemas/xcx_coaches.py

@@ -8,12 +8,29 @@ from app.schemas.base import CamelModel
 
 
 class PerformanceMetrics(CamelModel):
-    monthly_hours: float
-    monthly_salary: float
-    customer_balance: float
-    tasks_completed: int
-    perf_current: float
-    perf_target: float
+    """绩效概览 -- 与任务页 PerformanceSummary 统一数据源（monthly_summary 实时值）。"""
+    # 核心绩效字段（来自 build_performance_summary，与任务页一致）
+    total_hours: float = 0
+    total_income: float = 0
+    total_customers: int = 0
+    month_label: str = ""
+    tier_nodes: list[float] = []
+    basic_hours: float = 0
+    bonus_hours: float = 0
+    current_tier: int = 0
+    next_tier_hours: float = 0
+    tier_completed: bool = False
+    bonus_money: float = 0
+    income_trend: str = ""
+    income_trend_dir: str = "up"
+    prev_month: str = ""
+    current_tier_label: str = ""
+    # 助教详情页专属扩展字段
+    customer_balance: float = 0
+    tasks_completed: int = 0
+    # 兼容旧字段名（前端渐进适配）
+    monthly_hours: float = 0
+    monthly_salary: float = 0
 
 
 class IncomeItem(CamelModel):
@@ -56,6 +73,7 @@ class TopCustomer(CamelModel):
     # CHANGE 2026-03-29 | str → float：后端返回原始数字，前端 WXS 格式化（避免 NaN）
     balance: float
     consume: float
+    is_scattered: bool = False  # 散客标识，前端据此置灰名称
 
 
 class CoachServiceRecord(CamelModel):
@@ -71,6 +89,7 @@ class CoachServiceRecord(CamelModel):
     income: float
     date: str
     perf_hours: str | None = None
+    is_scattered: bool = False  # 散客标识，前端据此置灰名称
 
 
 class HistoryMonth(CamelModel):
@@ -94,6 +113,20 @@ class CoachNoteItem(CamelModel):
     created_at: str
 
 
+class CoachTaskStats(CamelModel):
+    """当月任务完成统计（回访/召回分类）。"""
+    callback: int = 0   # follow_up_visit 完成数
+    recall: int = 0     # high_priority_recall + priority_recall 完成数
+
+
+class CoachBannerResponse(CamelModel):
+    """助教 banner 轻量响应（仅 name / level / store_name），用于 PERF-2 等只需 banner 的页面。"""
+    id: int
+    name: str
+    level: str = ""
+    store_name: str = ""
+
+
 class CoachDetailResponse(CamelModel):
     """COACH-1 响应。"""
     # 基础信息
@@ -101,6 +134,8 @@ class CoachDetailResponse(CamelModel):
     name: str
     avatar: str
     level: str
+    # 门店名称：跟随被查看助教所在门店，供小程序 banner 展示
+    store_name: str = ""
     skills: list[str] = []
     work_years: float = 0
     customer_count: int = 0
@@ -111,6 +146,8 @@ class CoachDetailResponse(CamelModel):
     income: IncomeSection
     # 档位
     tier_nodes: list[float] = []
+    # 当月任务完成统计
+    task_stats: CoachTaskStats = CoachTaskStats()
     # 任务分组
     visible_tasks: list[CoachTaskItem] = []
     hidden_tasks: list[CoachTaskItem] = []