feat: 账套模式全量接入 — 12个API entity_id统一走token解析链 + 前端登录选公司/切换器重签token

- 后端: kpis/bsc_layers/cash/predict/growth_quality/tax_compliance/data 的 entity_id 参数统一改为 Depends(get_entity_id)
- 前端: 拦截器删除自动附加X-Entity-Id/entity_id; 登录页公司选择器(按用户名授权过滤); 切换器改POST /auth/switch-entity重新签发token+整页刷新; ReportCenter同步改造
- 修复前后端不匹配: login-entities路由→/auth/entities; login响应entity_id取user.entity_id

backend/app/api/cash.py

@@ -4,6 +4,7 @@ from datetime import datetime, timedelta
 from fastapi import APIRouter, HTTPException, Depends, Query
 from sqlalchemy.orm import Session
 from app.database import get_db
+from app.deps import get_entity_id
 from app.auth_middleware import require_role
 from app.models import CashPlan
 from app.utils.cash_forecast_engine import (
@@ -45,7 +46,7 @@ def _plan_dict(p: CashPlan) -> dict:
 
 @router.get("/gap-forecast")
 def api_gap_forecast(
-    entity_id: int = Query(1, description="企业ID"),
+    entity_id: int = Depends(get_entity_id),
     days: int = Query(30, ge=1, le=90, description="预测天数"),
     current_cash: float = Query(None, description="当前现金余额(万元)，不传则自动获取"),
     db: Session = Depends(get_db),
@@ -60,7 +61,7 @@ def api_gap_forecast(
 
 @router.get("/balance")
 def api_get_balance(
-    entity_id: int = Query(1),
+    entity_id: int = Depends(get_entity_id),
     db: Session = Depends(get_db),
 ):
     """获取当前现金余额（预测基线）"""
@@ -89,7 +90,7 @@ def api_set_balance(
 
 @router.get("/plans")
 def api_list_plans(
-    entity_id: int = Query(1),
+    entity_id: int = Depends(get_entity_id),
     plan_type: str = Query(None, description="receive/pay"),
     status: str = Query(None, description="pending/completed/cancelled"),
     month: str = Query(None, description="YYYY-MM 按计划月份过滤"),
@@ -215,7 +216,7 @@ def api_complete_plan(plan_id: int, db: Session = Depends(get_db)):
 
 @router.get("/upcoming")
 def api_upcoming(
-    entity_id: int = Query(1),
+    entity_id: int = Depends(get_entity_id),
     days: int = Query(7, ge=1, le=30),
     db: Session = Depends(get_db),
 ):
@@ -243,7 +244,7 @@ def api_upcoming(
 
 @router.get("/dashboard")
 def api_cash_dashboard(
-    entity_id: int = Query(1),
+    entity_id: int = Depends(get_entity_id),
     month: str = Query(None, description="YYYY-MM 默认本月"),
     days: int = Query(30),
     current_cash: float = Query(None, description="当前现金余额(万元)"),
@@ -303,7 +304,7 @@ def api_cash_dashboard(
 # ══════════════════════════════════════════════════════════
 
 @router.post("/check-alerts")
-def api_check_cash_alerts(entity_id: int = 1, db: Session = Depends(get_db)):
+def api_check_cash_alerts(entity_id: int = Depends(get_entity_id), db: Session = Depends(get_db)):
     """手动触发资金预警检查（写入预警中心kpi_alerts）"""
     try:
         return check_cash_alerts(db, entity_id=entity_id)
@@ -313,7 +314,7 @@ def api_check_cash_alerts(entity_id: int = 1, db: Session = Depends(get_db)):
 
 
 @router.get("/alerts/status")
-def api_cash_alert_status(entity_id: int = Query(1), db: Session = Depends(get_db)):
+def api_cash_alert_status(entity_id: int = Depends(get_entity_id), db: Session = Depends(get_db)):
     """资金预警状态概览 — 当前缺口/逾期情况（不写库，只读）"""
     result = forecast_cash_flow_with_plans(entity_id, db, days=30)
     return {