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 {

apps/macos/Sources/Clawdis/InstancesStore.swift

@@ -8,6 +8,7 @@ struct InstanceInfo: Identifiable, Codable {
     let host: String?
     let ip: String?
     let version: String?
+    let platform: String?
     let lastInputSeconds: Int?
     let mode: String?
     let reason: String?
@@ -145,6 +146,8 @@ final class InstancesStore: ObservableObject {
         let host = Host.current().localizedName ?? "this-mac"
         let ip = Self.primaryIPv4Address()
         let version = Bundle.main.object(forInfoDictionaryKey: "CFBundleShortVersionString") as? String
+        let osVersion = ProcessInfo.processInfo.operatingSystemVersion
+        let platform = "macos \(osVersion.majorVersion).\(osVersion.minorVersion).\(osVersion.patchVersion)"
         let text = "Local node: \(host)\(ip.map { " (\($0))" } ?? "") · app \(version ?? "dev")"
         let ts = Date().timeIntervalSince1970 * 1000
         return InstanceInfo(
@@ -152,6 +155,7 @@ final class InstancesStore: ObservableObject {
             host: host,
             ip: ip,
             version: version,
+            platform: platform,
             lastInputSeconds: Self.lastInputSeconds(),
             mode: "local",
             reason: reason,
@@ -228,6 +232,7 @@ final class InstancesStore: ObservableObject {
                 host: "gateway (health)",
                 ip: nil,
                 version: nil,
+                platform: nil,
                 lastInputSeconds: nil,
                 mode: "health",
                 reason: "health probe",
@@ -276,6 +281,7 @@ final class InstancesStore: ObservableObject {
                 host: entry.host,
                 ip: entry.ip,
                 version: entry.version,
+                platform: entry.platform,
                 lastInputSeconds: entry.lastinputseconds,
                 mode: entry.mode,
                 reason: entry.reason,
@@ -299,6 +305,7 @@ extension InstancesStore {
             host: "steipete-mac",
             ip: "10.0.0.12",
             version: "1.2.3",
+            platform: "macos 26.2.0",
             lastInputSeconds: 12,
             mode: "local",
             reason: "preview",
@@ -309,6 +316,7 @@ extension InstancesStore {
             host: "gateway",
             ip: "100.64.0.2",
             version: "1.2.3",
+            platform: "linux 6.6.0",
             lastInputSeconds: 45,
             mode: "remote",
             reason: "preview",

apps/macos/Sources/ClawdisProtocol/GatewayModels.swift

@@ -167,6 +167,7 @@ public struct PresenceEntry: Codable {
     public let host: String?
     public let ip: String?
     public let version: String?
+    public let platform: String?
     public let mode: String?
     public let lastinputseconds: Int?
     public let reason: String?
@@ -179,6 +180,7 @@ public struct PresenceEntry: Codable {
         host: String?,
         ip: String?,
         version: String?,
+        platform: String?,
         mode: String?,
         lastinputseconds: Int?,
         reason: String?,
@@ -190,6 +192,7 @@ public struct PresenceEntry: Codable {
         self.host = host
         self.ip = ip
         self.version = version
+        self.platform = platform
         self.mode = mode
         self.lastinputseconds = lastinputseconds
         self.reason = reason
@@ -202,6 +205,7 @@ public struct PresenceEntry: Codable {
         case host
         case ip
         case version
+        case platform
         case mode
         case lastinputseconds = "lastInputSeconds"
         case reason