feat: add remote reboot support

Sources/Views/ServerDetailView.swift

@@ -7,9 +7,18 @@
 
 import SwiftUI
 
+struct ServerActionFeedback: Identifiable {
+    let id = UUID()
+    let title: String
+    let message: String
+}
+
 struct ServerDetailView: View {
     @Binding var server: Server
     var isFetching: Bool
+    var canRestart: Bool = false
+    var isRestarting: Bool = false
+    var onRestart: (() async -> ServerActionFeedback)? = nil
     @AppStorage("showIntervalIndicator") private var showIntervalIndicator: Bool = true
     @AppStorage("refreshInterval") private var refreshInterval: Int = 60
 
@@ -18,6 +27,8 @@ struct ServerDetailView: View {
     }
 
     @State private var progress: Double = 0
+    @State private var showRestartSheet = false
+    @State private var restartFeedback: ServerActionFeedback?
     let timer = Timer.publish(every: 1.0 / 60.0, on: .main, in: .common).autoconnect()
     
     var body: some View {
@@ -33,7 +44,13 @@ struct ServerDetailView: View {
                 VStack(spacing: 0) {
                     Spacer().frame(height: 6)
                     TabView {
-                        GeneralView(server: resolvedBinding)
+                        GeneralView(
+                            server: resolvedBinding,
+                            canRestart: canRestart,
+                            isRestarting: isRestarting
+                        ) {
+                            showRestartSheet = true
+                        }
                             .tabItem {
                                 Text("General").unredacted()
                             }
@@ -57,6 +74,17 @@ struct ServerDetailView: View {
             }
             .padding(0)
         }
+        .overlay(alignment: .bottomTrailing) {
+            if let feedback = restartFeedback {
+                RestartFeedbackBanner(
+                    feedback: feedback,
+                    onDismiss: {
+                        restartFeedback = nil
+                    }
+                )
+                .padding()
+            }
+        }
         .onReceive(timer) { _ in
             guard showIntervalIndicator else { return }
             withAnimation(.linear(duration: 1.0 / 60.0)) {
@@ -64,6 +92,25 @@ struct ServerDetailView: View {
                 if progress >= 1 { progress = 0 }
             }
         }
+        .sheet(isPresented: $showRestartSheet) {
+            RestartConfirmationSheet(
+                hostname: server.hostname,
+                isRestarting: isRestarting,
+                onCancel: {
+                    showRestartSheet = false
+                },
+                onConfirm: {
+                    guard let onRestart else { return }
+                    showRestartSheet = false
+                    Task {
+                        let feedback = await onRestart()
+                        await MainActor.run {
+                            restartFeedback = feedback
+                        }
+                    }
+                }
+            )
+        }
     }
     
     private var resolvedBinding: Binding<Server> {
@@ -81,7 +128,8 @@ struct ServerDetailView: View {
 #Preview {
     ServerDetailView(
         server: .constant(Server(id: UUID(), hostname: "preview.example.com", info: ServerInfo.placeholder)),
-        isFetching: false
+        isFetching: false,
+        canRestart: true
     )
 }
 
@@ -97,3 +145,67 @@ private struct LoadingBadge: View {
         .background(.ultraThinMaterial, in: Capsule())
     }
 }
+
+private struct RestartConfirmationSheet: View {
+    let hostname: String
+    let isRestarting: Bool
+    let onCancel: () -> Void
+    let onConfirm: () -> Void
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 16) {
+            Text("Reboot this server?")
+                .font(.title3.weight(.semibold))
+
+            Text("This will send a reboot command to \(hostname).")
+                .foregroundColor(.secondary)
+
+            HStack {
+                Spacer()
+
+                Button("Cancel") {
+                    onCancel()
+                }
+                .keyboardShortcut(.cancelAction)
+                .disabled(isRestarting)
+
+                Button("Reboot", role: .destructive) {
+                    onConfirm()
+                }
+                .keyboardShortcut(.defaultAction)
+                .disabled(isRestarting)
+            }
+        }
+        .padding(24)
+        .frame(width: 420)
+    }
+}
+
+private struct RestartFeedbackBanner: View {
+    let feedback: ServerActionFeedback
+    let onDismiss: () -> Void
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 12) {
+            Text(feedback.title)
+                .font(.headline)
+
+            Text(feedback.message)
+                .font(.subheadline)
+                .foregroundColor(.secondary)
+
+            HStack {
+                Spacer()
+
+                Button("OK") {
+                    onDismiss()
+                }
+                .keyboardShortcut(.defaultAction)
+            }
+        }
+        .frame(maxWidth: 360, alignment: .leading)
+        .padding(24)
+        .background(.ultraThinMaterial, in: RoundedRectangle(cornerRadius: 16, style: .continuous))
+        .shadow(radius: 12)
+    }
+}