feat(sdk): 绑定时上报设备 log 到 update-metadata 并内聚双层绑定

- bind(userId:) 内聚为硬绑 + getVersion + 软绑 + updateMetadata 一次原子调用,
  软绑失败自动硬解绑回滚 + 清状态;集成方无需感知双层绑定
- fetchLatestFirmware 简化为对账上报 + checkUpgrade 两步,不再重复软绑
- VersionInfo 增加 log: [String: Any]?,走 JSONSerialization 解析(放弃 Codable);
  SDK 暴露只读 versionLog,断连/解绑/软绑回滚时清空
- ShipmentSnDeviceService 新增 updateMetadata(sn:data:),抽出 performPOST
  共享 HTTP 编排,新增 postAnyJSON 支持 [String: Any] body
- 老固件不返回 log → versionLog == nil → 自动跳过 updateMetadata,前向兼容

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Sources/DuooomiBleSDK/Models/VersionInfo.swift

@@ -4,24 +4,44 @@ public struct VersionInfo: Equatable {
     public let version: String
     /// 命令类型标识，设备可能返回 Int (如 7) 或 String (如 "0x07")
     public let type: String
-}
+    /// 设备运行日志，BLE 响应中 `log` 字段对应的任意 JSON 对象；缺失/非对象时为 nil。
+    /// SDK 不解析其内部结构，原样透传给 `update-metadata` 接口。
+    public let log: [String: Any]?
 
-extension VersionInfo: Codable {
-    enum CodingKeys: String, CodingKey {
-        case version, type
+    public init(version: String, type: String, log: [String: Any]? = nil) {
+        self.version = version
+        self.type = type
+        self.log = log
     }
 
-    public init(from decoder: Decoder) throws {
-        let container = try decoder.container(keyedBy: CodingKeys.self)
-        version = try container.decode(String.self, forKey: .version)
+    public static func == (lhs: VersionInfo, rhs: VersionInfo) -> Bool {
+        guard lhs.version == rhs.version, lhs.type == rhs.type else { return false }
+        return NSDictionary(dictionary: lhs.log ?? [:]).isEqual(to: rhs.log ?? [:])
+    }
+}
 
-        // type may come as Int or String from different firmware versions
-        if let str = try? container.decode(String.self, forKey: .type) {
-            type = str
-        } else if let num = try? container.decode(Int.self, forKey: .type) {
-            type = "\(num)"
+extension VersionInfo {
+    /// 从设备 BLE 响应字节流（已剥离 0 字节）解析。
+    /// type 字段兼容 Int / String 两种返回形态；log 字段缺失/非对象时返回 nil。
+    static func parse(from data: Data) throws -> VersionInfo {
+        let cleaned = data.filter { $0 != 0 }
+        let object = try JSONSerialization.jsonObject(with: cleaned)
+        guard let json = object as? [String: Any] else {
+            throw DuooomiBleError.transferFailed("VersionInfo: top-level not an object")
+        }
+
+        let version = (json["version"] as? String) ?? ""
+
+        let type: String
+        if let s = json["type"] as? String {
+            type = s
+        } else if let n = json["type"] as? NSNumber {
+            type = "\(n.intValue)"
         } else {
             type = ""
         }
+
+        let log = json["log"] as? [String: Any]
+        return VersionInfo(version: version, type: type, log: log)
     }
 }