demo app + SDK updates:\n- Add direct ANI transfer (prepare -> transfer)\n- Add firmware update flow (fetch latest w/ x-api-key, OTA transfer)\n- Extract x-api-key to NetworkConstants\n- Rename example app to demo; move folder and entry to DemoApp\n- Switch from SPM package dependency to local framework target\n- Enable automatic Info.plist generation for framework target\n- Add placeholder test to satisfy SwiftPM test target\n- Regenerate XcodeGen project (demo.xcodeproj)

demo/Sources/DemoApp.swift

@@ -0,0 +1,16 @@
+import SwiftUI
+import DuooomiBleSDK
+
+@main
+struct DemoApp: App {
+    @StateObject private var sdk = DuooomiBleSDK()
+
+    var body: some Scene {
+        WindowGroup {
+            NavigationView {
+                WrapperTestView()
+            }
+            .environmentObject(sdk)
+        }
+    }
+}