Show server PID in settings

mac/VibeTunnel/Core/Services/BunServer.swift

@@ -47,6 +47,11 @@ final class BunServer {
 
     var bindAddress: String = "127.0.0.1"
 
+    /// The process identifier of the running server, if available
+    var processIdentifier: Int32? {
+        process?.processIdentifier
+    }
+
     /// Local authentication token for bypassing auth on localhost
     private let localAuthToken: String = {
         // Generate a secure random token for this session

mac/VibeTunnel/Core/Services/ServerManager.swift

@@ -101,6 +101,11 @@ class ServerManager {
     private(set) var isRestarting = false
     private(set) var lastError: Error?
 
+    /// The process ID of the running server, if available
+    var serverProcessId: Int32? {
+        bunServer?.processIdentifier
+    }
+
     /// Track if we're in the middle of handling a crash to prevent multiple restarts
     private var isHandlingCrash = false
     /// Number of consecutive crashes for backoff

mac/VibeTunnel/Presentation/Views/Settings/DashboardSettingsView.swift

@@ -216,6 +216,13 @@ private struct ServerStatusSection: View {
                                 .font(.system(.body, design: .monospaced))
                         }
                     }
+
+                    if let pid = serverManager.serverProcessId {
+                        LabeledContent("Process ID") {
+                            Text("\(pid)")
+                                .font(.system(.body, design: .monospaced))
+                        }
+                    }
                 }
 
                 Divider()