release(ios): 发布 0.2.1 并重构图标与界面细节

- 应用图标改用与 Web favicon 同源的扁平标记，金色 SIM 卡体加三格递增信号，29pt 下仍可读
- 标签统一为胶囊形状，提高深色主题下的描边权重，避免标签在暗色下消失
- 消息卡片与详情分区卡片收紧行距，单屏信息密度明显提升
- 详情头部指标精简为 4 行，数据模块改为单条读数
- 批量选择勾选框移出名称区域，工具栏控件统一为等高 34pt
- 分组编辑器改为点选即生效，移除说明文字与常驻禁用按钮

apps/ios/Tests/MultiSimAdminTests/FleetViewModelTests.swift

@@ -4,12 +4,18 @@ import XCTest
 
 @MainActor
 final class FleetViewModelTests: XCTestCase {
+    private func transientPreferences() -> UserDefaults {
+        let suite = "FleetViewModelTests.\(UUID().uuidString)"
+        return UserDefaults(suiteName: suite)!
+    }
+
     func testRefreshSortsByNameAndReportsStatus() async throws {
         let repository = MemoryInstanceRepository()
         let model = FleetViewModel(
             repository: repository,
             probe: ConnectionProbe(client: AlwaysOnlineClient()),
-            credentials: NoopCredentialStore()
+            credentials: NoopCredentialStore(),
+            preferences: transientPreferences()
         )
         try await model.add(InstanceInput(
             name: "Zulu",
@@ -36,7 +42,8 @@ final class FleetViewModelTests: XCTestCase {
         let model = FleetViewModel(
             repository: repository,
             probe: ConnectionProbe(client: AlwaysOnlineClient()),
-            credentials: NoopCredentialStore()
+            credentials: NoopCredentialStore(),
+            preferences: transientPreferences()
         )
         try await model.add(InstanceInput(name: "Home", origin: URL(string: "http://192.168.1.70:3000")!, tags: ["home"]))
         try await model.add(InstanceInput(name: "Lab", origin: URL(string: "http://192.168.1.71:3000")!, tags: []))
@@ -48,14 +55,80 @@ final class FleetViewModelTests: XCTestCase {
         XCTAssertEqual(model.groupedRows.flatMap(\.rows).map(\.instance.name), ["Home"])
 
         model.searchText = ""
-        model.groupMode = .tags
-        XCTAssertEqual(model.groupedRows.map(\.title), ["home", "未打标签"])
-        XCTAssertEqual(model.groupedRows.map(\.rows.count), [1, 1])
+        model.clearTagFilters()
+        model.toggleTagFilter("Home")
+        XCTAssertEqual(model.allTags, ["home"])
+        XCTAssertEqual(model.visibleRows.map(\.instance.name), ["Home"])
+        XCTAssertEqual(model.countForTagFilter("home"), 1)
+        model.clearTagFilters()
 
         model.groupMode = .status
         XCTAssertEqual(model.groupedRows.map(\.title), ["在线"])
     }
 
+    func testTagFiltersCombineWithAndSemanticsAndPruneStaleSelections() async throws {
+        let repository = MemoryInstanceRepository()
+        let model = FleetViewModel(
+            repository: repository,
+            probe: ConnectionProbe(client: AlwaysOnlineClient()),
+            credentials: NoopCredentialStore(),
+            preferences: transientPreferences()
+        )
+        try await model.add(InstanceInput(
+            name: "Both",
+            origin: URL(string: "http://192.168.1.90:3000")!,
+            tags: ["primary", "field"]
+        ))
+        try await model.add(InstanceInput(
+            name: "Single",
+            origin: URL(string: "http://192.168.1.91:3000")!,
+            tags: ["primary"]
+        ))
+        await model.refresh()
+
+        model.toggleTagFilter("primary")
+        XCTAssertEqual(model.visibleRows.map(\.instance.name), ["Both", "Single"])
+
+        model.toggleTagFilter("FIELD")
+        XCTAssertEqual(model.visibleRows.map(\.instance.name), ["Both"])
+
+        model.toggleTagFilter("field")
+        model.toggleTagFilter("primary")
+        XCTAssertTrue(model.selectedTagFilters.isEmpty)
+
+        model.toggleTagFilter("vanished")
+        XCTAssertTrue(model.isTagFilterActive("vanished"))
+        await model.refresh()
+        XCTAssertTrue(model.selectedTagFilters.isEmpty, "已不存在的标签筛选应当在刷新后自动清理")
+    }
+
+    func testTagFilterSelectionSurvivesAcrossInstances() async throws {
+        let suite = "FleetTagFilterTests.\(UUID().uuidString)"
+        let repository = MemoryInstanceRepository()
+        let first = FleetViewModel(
+            repository: repository,
+            probe: ConnectionProbe(client: AlwaysOnlineClient()),
+            credentials: NoopCredentialStore(),
+            preferences: UserDefaults(suiteName: suite)!
+        )
+        try await first.add(InstanceInput(
+            name: "Relay",
+            origin: URL(string: "http://192.168.1.92:3000")!,
+            tags: ["relay"]
+        ))
+        await first.refresh()
+        first.toggleTagFilter("relay")
+
+        let second = FleetViewModel(
+            repository: repository,
+            probe: ConnectionProbe(client: AlwaysOnlineClient()),
+            credentials: NoopCredentialStore(),
+            preferences: UserDefaults(suiteName: suite)!
+        )
+        XCTAssertTrue(second.selectedTagFilters.contains("relay"))
+        UserDefaults(suiteName: suite)?.removePersistentDomain(forName: suite)
+    }
+
     func testGroupModeKeepsUngroupedInstancesVisible() async throws {
         let repository = MemoryInstanceRepository()
         let model = FleetViewModel(