chore: vendor client into main repo

client/ios/MindfulnessWidget/MindfulnessWidgetBundle.swift

@@ -0,0 +1,12 @@
+import WidgetKit
+import SwiftUI
+
+// 统一的 Widget Extension 入口（模块内只能有一个 @main）
+@main
+struct MindfulnessWidgetBundle: WidgetBundle {
+    var body: some Widget {
+        MindfulnessWidget()
+        EmotionWidget()
+    }
+}
+