fix: 添加单条记录GET端点，修复移动端编辑表单数据加载

- work-plans/mini-business/key-visits 均新增 GET /{id} 端点
- 三个移动端编辑表单改用单条端点加载数据
- 修复点击卡片进入编辑时空白的 bug

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

backend/app/api/key_visits.py

@@ -49,6 +49,21 @@ async def list_key_visits(
     return [await _enrich(k, db) for k in result.scalars().all()]
 
 
+@router.get("/{item_id}")
+async def get_key_visit(
+    item_id: str,
+    current_user: dict = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    result = await db.execute(select(KeyVisit).where(KeyVisit.id == item_id))
+    k = result.scalar_one_or_none()
+    if not k:
+        raise HTTPException(status_code=404, detail="Not found")
+    if current_user["role"] == "manager" and str(k.manager_id) != current_user["user_id"]:
+        raise HTTPException(status_code=403, detail="Access denied")
+    return await _enrich(k, db)
+
+
 @router.post("/")
 async def create_key_visit(
     data: KeyVisitCreate,

backend/app/api/mini_business.py

@@ -48,6 +48,21 @@ async def list_mini_business(
     return [await _enrich(m, db) for m in result.scalars().all()]
 
 
+@router.get("/{item_id}")
+async def get_mini_business(
+    item_id: str,
+    current_user: dict = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    result = await db.execute(select(MiniBusiness).where(MiniBusiness.id == item_id))
+    m = result.scalar_one_or_none()
+    if not m:
+        raise HTTPException(status_code=404, detail="Not found")
+    if current_user["role"] == "manager" and str(m.manager_id) != current_user["user_id"]:
+        raise HTTPException(status_code=403, detail="Access denied")
+    return await _enrich(m, db)
+
+
 @router.post("/")
 async def create_mini_business(
     data: MiniBusinessCreate,

backend/app/api/work_plans.py

@@ -48,6 +48,21 @@ async def list_work_plans(
     return [await _enrich(w, db) for w in result.scalars().all()]
 
 
+@router.get("/{item_id}")
+async def get_work_plan(
+    item_id: str,
+    current_user: dict = Depends(get_current_user),
+    db: AsyncSession = Depends(get_db),
+):
+    result = await db.execute(select(WorkPlan).where(WorkPlan.id == item_id))
+    wp = result.scalar_one_or_none()
+    if not wp:
+        raise HTTPException(status_code=404, detail="Not found")
+    if current_user["role"] == "manager" and str(wp.manager_id) != current_user["user_id"]:
+        raise HTTPException(status_code=403, detail="Access denied")
+    return await _enrich(wp, db)
+
+
 @router.post("/")
 async def create_work_plan(
     data: WorkPlanCreate,

frontend/src/views/mobile/KeyVisitForm.vue

@@ -44,10 +44,9 @@ onMounted(async () => {
   }
   if (isEdit.value) {
     try {
-      const res = await keyVisitsApi.list()
-      const items = Array.isArray(res.data) ? res.data : (res.data.items || [])
-      const d = items.find((x: any) => x.id === route.params.id)
-      if (d) form.value = { customer_id: d.customer_id, urgency_level: d.urgency_level, description: d.description || '', progress_status: d.progress_status, planned_date: d.planned_date, planned_visitor: d.planned_visitor, visit_target: d.visit_target, manager_id: d.manager_id || auth.userId || '' }
+      const res = await api.get(`/key-visits/${route.params.id}`)
+      const d = res.data
+      form.value = { customer_id: d.customer_id, urgency_level: d.urgency_level, description: d.description || '', progress_status: d.progress_status, planned_date: d.planned_date, planned_visitor: d.planned_visitor, visit_target: d.visit_target, manager_id: d.manager_id || auth.userId || '' }
     } catch (_) {}
   }
 })

frontend/src/views/mobile/MiniBusinessForm.vue

@@ -32,10 +32,9 @@ onMounted(async () => {
   }
   if (isEdit.value) {
     try {
-      const res = await miniBusinessApi.list()
-      const items = Array.isArray(res.data) ? res.data : (res.data.items || [])
-      const d = items.find((x: any) => x.id === route.params.id)
-      if (d) form.value = { customer_id: d.customer_id, product_type: d.product_type, amount: d.amount, follow_up_detail: d.follow_up_detail || '', status: d.status, expected_revenue_date: d.expected_revenue_date, manager_id: d.manager_id || auth.userId || '' }
+      const res = await api.get(`/mini-business/${route.params.id}`)
+      const d = res.data
+      form.value = { customer_id: d.customer_id, product_type: d.product_type, amount: d.amount, follow_up_detail: d.follow_up_detail || '', status: d.status, expected_revenue_date: d.expected_revenue_date, manager_id: d.manager_id || auth.userId || '' }
     } catch (_) {}
   }
 })