docs(03.1-01): 完成 Phase 03.1 Plan 01 执行总结

- 创建 03.1-01-SUMMARY.md：记录 3 个任务完成情况、6 个文件修改、SwitchMode 类型偏差修复
- 更新 STATE.md：追加执行日志、补充 B/C 端独立 DTO 结构决策

.planning/STATE.md

@@ -3,12 +3,12 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: unknown
-last_updated: "2026-03-28T03:45:16.290Z"
+last_updated: "2026-03-28T05:22:43.190Z"
 progress:
-  total_phases: 6
-  completed_phases: 3
-  total_plans: 9
-  completed_plans: 9
+  total_phases: 7
+  completed_phases: 4
+  total_plans: 10
+  completed_plans: 10
 ---
 
 # Project State — 君鸿卡管系统
@@ -73,6 +73,7 @@ Progress: [ 1 ]──[ 2 ]──[ 3 ]──[ 4 ]──[ 5 ]──[ 6 ]
 ---
 | Phase 03-device-system P01 | 8min | 2 tasks | 10 files |
 | Phase 03-device-system P02 | 10min | 2 tasks | 3 files |
+| Phase 03.1-sync-info-phase-3-dto P01 | 5min | 3 tasks | 6 files |
 
 ## Execution Log
 
@@ -85,6 +86,7 @@ Progress: [ 1 ]──[ 2 ]──[ 3 ]──[ 4 ]──[ 5 ]──[ 6 ]
 | Phase 01 P05 | 8min | 2 tasks | 3 files |
 | Phase 02 P01 | 10min | 2 tasks | 14 files |
 | Phase 02 P02 | 25min | 2 tasks | 8 files |
+| Phase 03.1 P01 | 5min | 3 tasks | 6 files |
 
 ---
 
@@ -100,6 +102,7 @@ Progress: [ 1 ]──[ 2 ]──[ 3 ]──[ 4 ]──[ 5 ]──[ 6 ]
 - REFUND-02/03 依赖 REFUND-01（数据模型先行）
 - DEVICE-04: gatewayClient nil guard 可选注入，sync-info 失败仅记 Warn 不阻断 Refresh 主流程
 - UpdateIsCurrentByDeviceID 事务两步原子更新 is_current，保证同一设备唯一 is_current=true
+- DeviceGatewayInfo（B端）与 DeviceRealtimeInfo（C端）独立结构体，SwitchMode 字符串→整型转换（Phase 03.1 决策）
 
 ### Architecture Notes