feat(ios): unify list cards and loading states

apps/ios/Sources/MultiSimAdmin/Features/Fleet/InstanceFormView.swift

@@ -25,32 +25,31 @@ struct InstanceFormView: View {
                                 field("名称", text: $name, placeholder: "Home Node")
                                 field("地址", text: $originText, placeholder: "http://192.168.1.10:3000")
                                 field("标签", text: $tagsText, placeholder: "home, primary")
-                                field("实例密码", text: $password, placeholder: "可选，保存到钥匙串", secure: true)
+                                field("实例密码", text: $password, placeholder: "可选，保存在本机沙盒", secure: true)
                             }
                         }
                         if let validationMessage {
-                            AICard {
-                                Label(validationMessage, systemImage: "exclamationmark.triangle")
-                                    .font(.subheadline)
-                                    .foregroundStyle(AITheme.danger)
-                            }
+                            AIStatusBanner(validationMessage, tint: AITheme.danger, systemImage: "exclamationmark.triangle")
                         }
                     }
                     .padding(16)
                 }
             }
             .navigationTitle("添加实例")
-            .toolbar {
-                ToolbarItem(placement: .cancellationAction) {
+            .aiBottomActionBar {
+                HStack(spacing: 10) {
                     Button("取消") { dismiss() }
-                        .buttonStyle(AIButtonStyle(kind: .secondary, size: .regular))
-                }
-                ToolbarItem(placement: .confirmationAction) {
-                    Button("保存") {
-                        save()
-                    }
-                    .buttonStyle(AIButtonStyle(kind: .primary, size: .regular))
-                    .disabled(!canSave)
+                        .buttonStyle(
+                            AIButtonStyle(
+                                kind: .secondary,
+                                size: .regular,
+                                fixedWidth: AITheme.footerSecondaryButtonWidth
+                            )
+                        )
+
+                    Button("保存实例") { save() }
+                        .buttonStyle(AIButtonStyle(kind: .primary, size: .regular, fillsWidth: true))
+                        .disabled(!canSave)
                 }
             }
         }
@@ -73,6 +72,11 @@ struct InstanceFormView: View {
             } else {
                 TextField(placeholder, text: text)
                     .textFieldStyle(AIFieldStyle())
+                    #if os(iOS)
+                    .keyboardType(title == "地址" ? .URL : .default)
+                    .textInputAutocapitalization(title == "地址" || title == "标签" ? .never : nil)
+                    #endif
+                    .autocorrectionDisabled(title == "地址" || title == "标签")
             }
         }
     }