feat: Sdk 封装

demo/Sources/DemoApp.swift

@@ -1,9 +1,13 @@
 import SwiftUI
 import DuooomiBleSDK
 
+/// Demo 入口：初始化 SDK 并注入到视图树。
+/// 只需传 apiKey，其余配置（apiHost/cdnHost/firmwareIdentifier/firmwareStatus）使用默认值。
 @main
 struct DemoApp: App {
-    @StateObject private var sdk = DuooomiBleSDK()
+    @StateObject private var sdk = DuooomiBleSDK(config: .init(
+        apiKey: ""
+    ))
 
     var body: some Scene {
         WindowGroup {