feat(ios): refine adaptive theme and unified controls

apps/ios/Sources/MultiSimAdmin/Features/Messages/MessagesView.swift

@@ -18,7 +18,7 @@ struct MessagesView: View {
                         AIStatusBanner(errorMessage, tint: AITheme.warning, systemImage: "exclamationmark.triangle")
                     }
                     if model.isLoading && model.filteredRows.isEmpty {
-                        AILoadingCard("正在同步消息")
+                        AILoadingCard("正在同步消息数据")
                     }
                     if model.filteredRows.isEmpty && !model.isLoading {
                         AICard {
@@ -73,12 +73,13 @@ struct MessagesView: View {
     private var filterBar: some View {
         AICard {
             VStack(spacing: 10) {
-                Picker("方向", selection: $model.direction) {
-                    ForEach(MessagesViewModel.DirectionFilter.allCases) { item in
-                        Text(item.rawValue).tag(item)
+                AISegmentedControl(
+                    "消息方向",
+                    selection: $model.direction,
+                    options: MessagesViewModel.DirectionFilter.allCases.map {
+                        (value: $0, title: $0.rawValue)
                     }
-                }
-                .pickerStyle(.segmented)
+                )
 
                 Picker("实例", selection: $model.selectedInstanceID) {
                     Text("全部实例").tag(Optional<UUID>.none)
@@ -100,6 +101,9 @@ struct MessagesView: View {
                 HStack(spacing: 8) {
                     Text(message.phoneNumber.isEmpty ? "未知号码" : message.phoneNumber)
                         .font(.headline)
+                        .lineLimit(1)
+                        .truncationMode(.middle)
+                        .layoutPriority(1)
                     Spacer()
                     AITag(message.direction.label, tint: message.direction == .outgoing ? AITheme.primary : AITheme.success)
                 }
@@ -107,16 +111,18 @@ struct MessagesView: View {
                     .font(.subheadline)
                     .foregroundStyle(AITheme.ink)
                     .fixedSize(horizontal: false, vertical: true)
-                HStack {
+                HStack(alignment: .center, spacing: 10) {
                     Text(message.instanceName)
                         .font(.caption)
                         .foregroundStyle(AITheme.muted)
                         .lineLimit(1)
                         .truncationMode(.middle)
                         .layoutPriority(1)
-                    Spacer()
-                    Button("删除") {
+                    Spacer(minLength: 8)
+                    Button {
                         pendingDeleteMessage = message
+                    } label: {
+                        Label("删除", systemImage: "trash")
                     }
                     .buttonStyle(
                         AIButtonStyle(