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/Models/InstanceModels.swift

@@ -13,7 +13,6 @@ public struct Instance: Codable, Equatable, Identifiable, Sendable {
     public var name: String
     public var origin: URL
     public var tags: [String]
-    public var groupId: UUID?
     public var credentialConfigured: Bool
     public var configRevision: Int
     public let createdAt: Date
@@ -24,7 +23,6 @@ public struct Instance: Codable, Equatable, Identifiable, Sendable {
         name: String,
         origin: URL,
         tags: [String] = [],
-        groupId: UUID? = nil,
         credentialConfigured: Bool = false,
         configRevision: Int = 1,
         createdAt: Date,
@@ -34,7 +32,6 @@ public struct Instance: Codable, Equatable, Identifiable, Sendable {
         self.name = name
         self.origin = origin
         self.tags = tags
-        self.groupId = groupId
         self.credentialConfigured = credentialConfigured
         self.configRevision = configRevision
         self.createdAt = createdAt
@@ -46,20 +43,17 @@ public struct InstanceInput: Sendable {
     public var name: String
     public var origin: URL
     public var tags: [String]
-    public var groupId: UUID?
     public var password: String?
 
     public init(
         name: String,
         origin: URL,
         tags: [String] = [],
-        groupId: UUID? = nil,
         password: String? = nil
     ) {
         self.name = name
         self.origin = origin
         self.tags = tags
-        self.groupId = groupId
         self.password = password
     }
 }
@@ -68,20 +62,17 @@ public struct InstancePatch: Sendable {
     public var name: String?
     public var origin: URL?
     public var tags: [String]?
-    public var groupId: UUID?
     public var password: String?
 
     public init(
         name: String? = nil,
         origin: URL? = nil,
         tags: [String]? = nil,
-        groupId: UUID? = nil,
         password: String? = nil
     ) {
         self.name = name
         self.origin = origin
         self.tags = tags
-        self.groupId = groupId
         self.password = password
     }
 }
@@ -89,12 +80,10 @@ public struct InstancePatch: Sendable {
 public struct InstanceQuery: Sendable {
     public var search: String?
     public var tags: [String]?
-    public var groupId: UUID?
 
-    public init(search: String? = nil, tags: [String]? = nil, groupId: UUID? = nil) {
+    public init(search: String? = nil, tags: [String]? = nil) {
         self.search = search
         self.tags = tags
-        self.groupId = groupId
     }
 }