feat(ios): unify list cards and loading states

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

@@ -27,18 +27,27 @@ struct SendMessageFormView: View {
                     VStack(spacing: 12) {
                         AICard {
                             VStack(alignment: .leading, spacing: 14) {
-                                Picker("实例", selection: Binding(
-                                    get: { model.selectedInstanceID ?? model.instances.first?.id },
-                                    set: { model.selectedInstanceID = $0 }
-                                )) {
-                                    ForEach(model.instances) { instance in
-                                        Text(instance.name).tag(Optional(instance.id))
+                                VStack(alignment: .leading, spacing: 6) {
+                                    Text("实例")
+                                        .font(.subheadline.weight(.semibold))
+                                        .foregroundStyle(AITheme.ink)
+                                    Picker("实例", selection: Binding(
+                                        get: { model.selectedInstanceID ?? model.instances.first?.id },
+                                        set: { model.selectedInstanceID = $0 }
+                                    )) {
+                                        ForEach(model.instances) { instance in
+                                            Text(instance.name).tag(Optional(instance.id))
+                                        }
                                     }
+                                    .pickerStyle(.menu)
+                                    .aiSelectSurface()
                                 }
-                                .pickerStyle(.menu)
 
                                 TextField("收件号码", text: $phoneNumber)
                                     .textFieldStyle(AIFieldStyle())
+                                    #if os(iOS)
+                                    .keyboardType(.phonePad)
+                                    #endif
 
                                 TextField("消息内容", text: $content, axis: .vertical)
                                     .textFieldStyle(.plain)
@@ -54,24 +63,26 @@ struct SendMessageFormView: View {
                             }
                         }
                         if let validationMessage {
-                            Text(validationMessage)
-                                .font(.subheadline)
-                                .foregroundStyle(AITheme.danger)
-                                .frame(maxWidth: .infinity, alignment: .leading)
+                            AIStatusBanner(validationMessage, tint: AITheme.danger, systemImage: "exclamationmark.triangle")
                         }
                     }
                     .padding(16)
                 }
             }
             .navigationTitle("发送消息")
-            .toolbar {
-                ToolbarItem(placement: .cancellationAction) {
+            .aiBottomActionBar {
+                HStack(spacing: 10) {
                     Button("取消") { dismiss() }
-                        .buttonStyle(AIButtonStyle(kind: .secondary, size: .regular))
-                }
-                ToolbarItem(placement: .confirmationAction) {
+                        .buttonStyle(
+                            AIButtonStyle(
+                                kind: .secondary,
+                                size: .regular,
+                                fixedWidth: AITheme.footerSecondaryButtonWidth
+                            )
+                        )
+
                     Button("发送") { send() }
-                        .buttonStyle(AIButtonStyle(kind: .primary, size: .regular))
+                        .buttonStyle(AIButtonStyle(kind: .primary, size: .regular, fillsWidth: true))
                         .disabled(!canSend)
                 }
             }