产品迭代模块：卡片改表格 + 日期内联编辑 + 后端日期校验

- 卡片列表改为表格列表（10列），参考用户运营中心产品台账
- 数据库新增 priority + 5 个日期字段（start/plan/dev_done/test/launch）
- 删除 owner/platform/feature_list 字段（migrate_drop_product_fields）
- 日期内联编辑：5个日期列直接渲染 date input
- 后端日期校验：4个时间不能早于启动时间；启动时间必填
- 详情页新增耗时统计区块（总/产品/研发/测试耗时）
- 优先级和状态合并同一行
- 新增'未开始'状态
- 表格垂直居中对齐
- renderProducts 后重新初始化 lucide 图标

backend/flask_app.py

@@ -856,7 +856,7 @@ TABLES = {
     "sales": ("sales_leads", ["target_customer", "priority", "status", "tenant"]),
     "proposals": ("business_proposals", ["customer_or_project_name", "version", "description", "status", "created_date", "proposal_type", "notes", "tenant"]),
     "operations": ("operation_projects", ["project_name", "project_version", "project_type", "project_status", "current_stage", "owner", "target_customer", "customer_need", "expected_contract_amount", "expected_sign_date", "sign_probability", "next_action", "sop_stage", "execution_progress", "current_deliverable", "risks", "notes", "tenant"]),
-    "products": ("product_versions", ["product_name", "version", "version_goal", "feature_list", "launch_date", "status", "platform", "notes", "tenant"]),
+    "products": ("product_versions", ["product_name", "version", "version_goal", "priority", "start_date", "plan_date", "dev_done_date", "test_date", "launch_date", "status", "notes", "tenant"]),
     "finance": ("finance_records", ["month", "project_name", "record_type", "category", "amount", "occurred_date", "notes", "tenant"]),
     "tasks": ("project_tasks", ["project_id", "phase", "milestone", "task", "owner", "due_date", "blockers", "notes", "status", "sort_order", "priority", "tenant"]),
     "projectFinances": ("project_finances", ["project_id", "tenant", "business_type", "customer_name", "sign_amount", "sign_month", "status", "sales_person", "owner", "total_rev", "total_gross", "budget_data"]),
@@ -913,6 +913,22 @@ def update_resource(resource, item_id):
             valid_statuses = ["未开始", "进行中", "已结束"]
             if not payload["status"] or payload["status"] not in valid_statuses:
                 payload["status"] = "未开始"
+        # 产品日期约束：4 个时间不能早于启动时间；启动时间不能清空
+        if resource == "products":
+            # 查当前记录的 start_date
+            cur = _exec(conn, f"SELECT start_date FROM {table} WHERE id=?", (item_id,))
+            row = cur.fetchone()
+            cur.close()
+            current_start = (row or {}).get("start_date", "") or ""
+            new_start = payload.get("start_date", current_start)
+            # 启动时间必填
+            if "start_date" in payload and not new_start:
+                return jsonify({"error": "启动时间为必填项"}), 400
+            date_fields = ["plan_date", "dev_done_date", "test_date", "launch_date"]
+            for f in date_fields:
+                if f in payload and payload[f] and new_start and payload[f] < new_start:
+                    labels = {"plan_date": "产品方案", "dev_done_date": "研发完成", "test_date": "测试完成", "launch_date": "上线时间"}
+                    return jsonify({"error": f"{labels[f]}不能早于启动时间（{new_start}）"}), 400
         update_cols = [col for col in cols if col in payload]
         if update_cols:
             _exec(conn,