feat: 亮灯表重构 — 点击卡片弹窗替代跳转周报

后端 light_board.py:
- 每张客户卡片返回 plans[] (活跃工作计划) + recent_visits[] (最近2条)
- 计划过期检测 (plan_overdue)

前端 LightBoard.vue:
- 点击卡片 → el-dialog 弹窗 (不再跳转周报)
- 绿灯: 显示最近拜访记录
- 黄/红灯: 客户信息 + 快速制定拜访计划表单
- 卡片显示计划标签 (📅正常 / ⚠过期闪烁)
- 弹窗底部保留「查看周报记录」链接

计划过期逻辑: plan_date < 当月首日 且 status=计划中

Co-Authored-By: Claude <noreply@anthropic.com>

backend/app/services/light_board.py

@@ -15,6 +15,7 @@ from app.models.user import User
 from app.models.customer import Customer
 from app.models.customer_assignment import CustomerAssignment
 from app.models.visit import Visit
+from app.models.work_plan import WorkPlan
 from app.utils.timezone import today_cst
 
 
@@ -156,6 +157,59 @@ async def get_light_board(
             else:
                 mgr_entry["not_visited_2months"] += 1
 
+    # ── Active work plans per customer ──
+    active_plans_result = await db.execute(
+        select(
+            WorkPlan.customer_id,
+            WorkPlan.plan_content,
+            WorkPlan.plan_date,
+            WorkPlan.status,
+            WorkPlan.manager_id,
+        ).where(
+            WorkPlan.customer_id.in_(assigned_customer_ids),
+            WorkPlan.status == "计划中",
+        ).order_by(WorkPlan.plan_date)
+    )
+    plans_map: dict[UUID, list] = {}
+    for row in active_plans_result.all():
+        cid, content, pdate, pstatus, pmanager = row
+        plans_map.setdefault(cid, []).append({
+            "plan_content": content,
+            "plan_date": str(pdate),
+            "status": pstatus,
+            "plan_overdue": pdate < ref,
+            "manager_id": str(pmanager) if pmanager else None,
+        })
+
+    # ── Recent visits for green/yellow customers ──
+    recent_visits_result = await db.execute(
+        select(
+            Visit.customer_id,
+            Visit.visit_date,
+            Visit.visit_method,
+            Visit.communication_content,
+            Visit.manager_id,
+        ).where(
+            Visit.customer_id.in_(assigned_customer_ids),
+        ).order_by(Visit.visit_date.desc()).limit(500)
+    )
+    visits_map: dict[UUID, list] = {}
+    for row in recent_visits_result.all():
+        cid, vdate, vmethod, vcontent, vmanager = row
+        visits_map.setdefault(cid, []).append({
+            "visit_date": str(vdate),
+            "visit_method": vmethod,
+            "content": (vcontent or "")[:120],
+            "manager_id": str(vmanager) if vmanager else None,
+        })
+
+    # ── Merge plans & visits into customer entries ──
+    for mgr_entry in manager_map.values():
+        for c in mgr_entry["customers"]:
+            cid = UUID(c["customer_id"])
+            c["plans"] = plans_map.get(cid, [])
+            c["recent_visits"] = (visits_map.get(cid, []) or [])[:2]
+
     # ── Calculate coverage rates ──
     for mgr_entry in manager_map.values():
         total = mgr_entry["total_customers"]