feat(instances): show OS version

apps/macos/Sources/Clawdis/InstancesSettings.swift

@@ -67,6 +67,9 @@ struct InstancesSettings: View {
                 if let version = inst.version {
                     self.label(icon: "shippingbox", text: version)
                 }
+                if let platform = inst.platform, let prettyPlatform = self.prettyPlatform(platform) {
+                    self.label(icon: self.platformIcon(platform), text: prettyPlatform)
+                }
                 self.label(icon: "clock", text: inst.lastInputDescription)
                 if let mode = inst.mode { self.label(icon: "network", text: mode) }
                 if let reason = inst.reason, !reason.isEmpty {
@@ -94,6 +97,52 @@ struct InstancesSettings: View {
         .font(.footnote)
     }
 
+    private func platformIcon(_ raw: String) -> String {
+        let (prefix, _) = self.parsePlatform(raw)
+        switch prefix {
+        case "macos":
+            return "laptopcomputer"
+        case "ios":
+            return "iphone"
+        case "ipados":
+            return "ipad"
+        case "tvos":
+            return "appletv"
+        case "watchos":
+            return "applewatch"
+        default:
+            return "cpu"
+        }
+    }
+
+    private func prettyPlatform(_ raw: String) -> String? {
+        let (prefix, version) = self.parsePlatform(raw)
+        if prefix.isEmpty { return nil }
+        let name: String = switch prefix {
+        case "macos": "macOS"
+        case "ios": "iOS"
+        case "ipados": "iPadOS"
+        case "tvos": "tvOS"
+        case "watchos": "watchOS"
+        default: prefix.prefix(1).uppercased() + prefix.dropFirst()
+        }
+        guard let version, !version.isEmpty else { return name }
+        let parts = version.split(separator: ".").map(String.init)
+        if parts.count >= 2 {
+            return "\(name) \(parts[0]).\(parts[1])"
+        }
+        return "\(name) \(version)"
+    }
+
+    private func parsePlatform(_ raw: String) -> (prefix: String, version: String?) {
+        let trimmed = raw.trimmingCharacters(in: .whitespacesAndNewlines)
+        if trimmed.isEmpty { return ("", nil) }
+        let parts = trimmed.split(whereSeparator: { $0 == " " || $0 == "\t" }).map(String.init)
+        let prefix = parts.first?.lowercased() ?? ""
+        let versionToken = parts.dropFirst().first
+        return (prefix, versionToken)
+    }
+
     private func presenceUpdateSourceText(_ reason: String) -> String {
         let trimmed = reason.trimmingCharacters(in: .whitespacesAndNewlines)
         switch trimmed {