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/Sources/MultiSimAdmin/Features/Messages/MessageModels.swift

@@ -15,7 +15,8 @@ public enum SMSDirection: String, Equatable, Sendable {
 }
 
 public struct SMSMessage: Equatable, Identifiable, Sendable {
-    public let id: String
+    /// 上游消息 id 只在单个节点内唯一，聚合展示时不能直接当 Identifiable 用。
+    public let upstreamID: String
     public let instanceID: UUID
     public let instanceName: String
     public let phoneNumber: String
@@ -23,6 +24,48 @@ public struct SMSMessage: Equatable, Identifiable, Sendable {
     public let direction: SMSDirection
     public let status: String
     public let timestamp: String
+    public var id: String { "\(instanceID.uuidString)#\(upstreamID)" }
+
+    /// 上游 status 是英文原词，列表里直接展示会混进一行英文；未知值仍然原样显示，不做假结论。
+    public var statusLabel: String? {
+        let key = status.trimmingCharacters(in: .whitespaces).lowercased()
+        guard key.isEmpty == false else { return nil }
+        switch key {
+        case "received", "in", "incoming": return "已接收"
+        case "sent": return "已发送"
+        case "delivered": return "已送达"
+        case "read": return "已读"
+        case "failed", "error": return "发送失败"
+        case "pending", "queued", "sending": return "发送中"
+        default: return status
+        }
+    }
+
+    /// 收件的"已接收"和方向标签说的是同一件事，只有发件状态才值得再占一个位置。
+    public var deliveryLabel: String? {
+        guard direction == .outgoing else { return nil }
+        return statusLabel
+    }
+
+    public init(
+        upstreamID: String,
+        instanceID: UUID,
+        instanceName: String,
+        phoneNumber: String,
+        content: String,
+        direction: SMSDirection,
+        status: String,
+        timestamp: String
+    ) {
+        self.upstreamID = upstreamID
+        self.instanceID = instanceID
+        self.instanceName = instanceName
+        self.phoneNumber = phoneNumber
+        self.content = content
+        self.direction = direction
+        self.status = status
+        self.timestamp = timestamp
+    }
 }
 
 public struct MessagePage: Equatable, Sendable {