release(ios): 0.2.2 移除分组改用标签归类并完成石墨配色重构

- 删除分组实体：分组视图/编辑器/仓储与 groupId 全部移除，升级首启清理
  instance-groups.json 与 fleet.groupMode
- 新增批量标签表：三态覆盖度（未贴 / N/M / 全部），整批加减与新建标签
- 配色重构，全应用零蓝色：石墨墨色承担主操作与选中态，颜色只留给状态语义；
  浅色改中性冷灰，深色改低明度石墨三层
- 选中态改实心主色 + onPrimary，替换不可读的低透明度色雾（主题块、图例胶囊）
- 应用图标重做为扁平石墨底 + 黄铜 SIM 面板，参数化光栅化脚本与参考稿
- 运行概览：检测进度并入副标题，读数栅格固定八格两行并保留不可用占位
- 实例详情：仪表改两列发丝线栅格，缺数据留轨道，修掉头部高度回弹；
  补齐设备名称/存储总量/可用存储/使用率四个字段名
- 版本号显示去掉括号，设置页只显示 0.2.2
- 文档：新增 docs/ios-native-0.2.2.md，同步 ios-native.md 与两处 README

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

@@ -9,7 +9,6 @@ struct InstanceFormView: View {
   @State private var tags: [String] = []
   @State private var tagDraft = ""
   @State private var password = ""
-  @State private var selectedGroupId: UUID?
   @State private var validationMessage: String?
   @State private var isSaving = false
 
@@ -19,7 +18,6 @@ struct InstanceFormView: View {
     _name = State(initialValue: instance?.name ?? "")
     _originText = State(initialValue: instance?.origin.absoluteString ?? "")
     _tags = State(initialValue: instance?.tags ?? [])
-    _selectedGroupId = State(initialValue: instance?.groupId)
   }
 
   private var canSave: Bool {
@@ -36,7 +34,6 @@ struct InstanceFormView: View {
               field("名称", text: $name, placeholder: "Home Node")
               field("地址", text: $originText, placeholder: "http://192.168.1.10:3000")
               tagEditor
-              groupPicker
               field(
                 "实例密码",
                 text: $password,
@@ -81,30 +78,6 @@ struct InstanceFormView: View {
     }
   }
 
-  private var groupPicker: some View {
-    VStack(alignment: .leading, spacing: 8) {
-      HStack(spacing: 8) {
-        AIFieldLabel("分组")
-        Spacer()
-        Button {
-          model.showingGroupManager = true
-        } label: {
-          Label("管理", systemImage: "folder.badge.gearshape")
-        }
-        .buttonStyle(AIButtonStyle(kind: .secondary, size: .toolbarInline, fixedWidth: 72))
-      }
-      Picker("分组", selection: $selectedGroupId) {
-        Text("未分组").tag(UUID?.none)
-        ForEach(model.groups) { group in
-          Text(group.name).tag(UUID?.some(group.id))
-        }
-      }
-      .pickerStyle(.menu)
-      .aiSelectSurface()
-    }
-    .accessibilityElement(children: .contain)
-  }
-
   private var tagEditor: some View {
     VStack(alignment: .leading, spacing: 6) {
       AIFieldLabel("标签")
@@ -156,7 +129,6 @@ struct InstanceFormView: View {
       name: normalizedName,
       origin: origin,
       tags: tags,
-      groupId: selectedGroupId,
       password: password.isEmpty ? nil : password
     )
     Task {