feat: 实现RCU固件升级服务核心功能

- 添加升级服务主逻辑，包括定时触发升级、状态查询和日志记录
- 实现数据库初始化脚本和日志表结构
- 添加PM2部署配置文件
- 实现环境变量配置系统
- 添加API客户端模块处理外部接口调用
- 实现升级状态轮询和超时处理机制
- 添加测试用例验证核心功能

spec/rcu-upgrade-flow.yaml

@@ -0,0 +1,183 @@
+openapi: 3.1.0
+info:
+  title: RCU Upgrade Service Spec
+  version: 1.0.0
+  description: Specification for RCU Upgrade Service API interactions and data models.
+
+paths:
+  /api/WebChatUpgrade:
+    post:
+      summary: Trigger Upgrade
+      operationId: triggerUpgrade
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              $ref: '#/components/schemas/UpgradeRequest'
+      responses:
+        '200':
+          description: Successful response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/UpgradeResponse'
+
+  /api/QueryUpdateHostProgressBar:
+    post:
+      summary: Query Upgrade Status
+      operationId: queryUpgradeStatus
+      requestBody:
+        content:
+          application/x-www-form-urlencoded:
+            schema:
+              $ref: '#/components/schemas/QueryRequest'
+      responses:
+        '200':
+          description: Status response
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/QueryResponse'
+
+components:
+  schemas:
+    UpgradeRequest:
+      type: object
+      properties:
+        roomtype_id:
+          type: integer
+          description: Room Type ID
+        host_list_str:
+          type: string
+          description: JSON string array of Host IDs (e.g., "[1,2,3]")
+        fileName:
+          type: string
+          description: Firmware filename
+      required:
+        - roomtype_id
+        - host_list_str
+        - fileName
+
+    UpgradeResponse:
+      type: object
+      properties:
+        IsSuccess:
+          type: boolean
+        Data:
+          type: string
+      required:
+        - IsSuccess
+
+    QueryRequest:
+      type: object
+      properties:
+        HostIDList:
+          type: string
+          description: JSON string array of Host IDs (e.g., "[1,2,3]")
+      required:
+        - HostIDList
+
+    QueryResponse:
+      type: object
+      properties:
+        IsSuccess:
+          type: boolean
+        Response:
+          type: array
+          items:
+            $ref: '#/components/schemas/HostStatus'
+      required:
+        - IsSuccess
+
+    HostStatus:
+      type: object
+      properties:
+        HostID:
+          type: integer
+        Upgrade_status:
+          type: string
+          enum:
+            - 升级就绪
+            - 升级完成
+            - 升级失败
+            - 开始下载
+            - 下载中
+            - 下载完成
+            - 校验中
+            - 校验完成
+            - RCU升级中
+            - 超时失败
+        Upgrade_DateTime:
+          type: string
+          format: date-time
+        UpgradeFileType:
+          type: string
+          enum:
+            - 固件升级
+            - 配置升级
+        FileBlockTotalCount:
+          type: integer
+        FileCurrentNumber:
+          type: integer
+        BaiFenBi:
+          type: string
+        FileName:
+          type: string
+        Version:
+          type: string
+        ConfiguraVersion:
+          type: string
+
+    UpgradeLog:
+      type: object
+      description: Schema for database log entry
+      properties:
+        start_time:
+          type: string
+          format: date-time
+        roomtype_id:
+          type: integer
+        host_str:
+          type: string
+        filename:
+          type: string
+        status:
+          type: string
+        end_time:
+          type: string
+          format: date-time
+        file_type:
+          type: string
+        config_version:
+          type: string
+        firmware_version:
+          type: string
+        uuid:
+          type: string
+          format: uuid
+    UpgradeConfigGroup:
+      type: object
+      properties:
+        hosts:
+          type: array
+          items:
+            type: integer
+        roomtypes:
+          type: array
+          minItems: 2
+          maxItems: 2
+          items:
+            $ref: '#/components/schemas/UpgradeConfigRoomtype'
+      required:
+        - hosts
+        - roomtypes
+    UpgradeConfigRoomtype:
+      type: object
+      properties:
+        roomtype_id:
+          type: integer
+        fileName:
+          type: string
+      required:
+        - roomtype_id
+        - fileName