Improve ngrok authentication UX and move update settings

- Show alert dialog when attempting to enable ngrok without auth token
- Move update channel and check for updates from Advanced to General settings
- Place update controls under Application section for better accessibility
- Add AppKit import for NSAlert functionality

VibeTunnel/Core/Services/TunnelServer.swift

@@ -950,7 +950,6 @@ public final class TunnelServer {
             }
         }
     }
-    }
 
     private func getSessionSnapshot(sessionId: String) async -> Response {
         let streamOutPath = URL(fileURLWithPath: ttyFwdControlDir).appendingPathComponent(sessionId)

VibeTunnel/SettingsView.swift

@@ -1,4 +1,5 @@
 import SwiftUI
+import AppKit
 
 /// Represents the available tabs in the Settings window
 enum SettingsTab: String, CaseIterable {
@@ -460,6 +461,16 @@ struct AdvancedSettingsView: View {
             print("No auth token found")
             ngrokError = "Please enter your ngrok auth token first"
             ngrokEnabled = false
+            
+            // Show alert dialog
+            Task { @MainActor in
+                let alert = NSAlert()
+                alert.messageText = "ngrok Auth Token Required"
+                alert.informativeText = "Please enter your ngrok auth token before enabling the tunnel. You can get a free auth token at ngrok.com"
+                alert.alertStyle = .warning
+                alert.addButton(withTitle: "OK")
+                alert.runModal()
+            }
             return
         }
 

VibeTunnel/Utilities/ApplicationMover.swift

@@ -159,23 +159,22 @@ final class ApplicationMover {
         task.standardError = Pipe() // Suppress stderr
 
         do {
-            logger.info("ApplicationMover: Running hdiutil info -plist")
+            logger.debug("ApplicationMover: Running hdiutil info -plist")
             try task.run()
             task.waitUntilExit()
 
             guard task.terminationStatus == 0 else {
-                logger.warning("ApplicationMover: hdiutil command failed with status: \(task.terminationStatus)")
+                logger.debug("ApplicationMover: hdiutil command failed with status: \(task.terminationStatus)")
                 return nil
             }
 
             let data = pipe.fileHandleForReading.readDataToEndOfFile()
-            logger.info("ApplicationMover: hdiutil returned \(data.count) bytes")
+            logger.debug("ApplicationMover: hdiutil returned \(data.count) bytes")
 
             guard let plist = try PropertyListSerialization
                 .propertyList(from: data, options: [], format: nil) as? [String: Any],
                 let images = plist["images"] as? [[String: Any]] else {
-                logger.info("ApplicationMover: Failed to parse hdiutil plist or no images found")
+                logger.debug("ApplicationMover: No disk images found in hdiutil output")
-                logger.warning("Failed to parse hdiutil output")
                 return nil
             }
 
@@ -196,7 +195,7 @@ final class ApplicationMover {
             return nil
 
         } catch {
-            logger.error("Error running hdiutil: \(error)")
+            logger.debug("ApplicationMover: Unable to run hdiutil (expected in some environments): \(error)")
             return nil
         }
     }

VibeTunnel/Views/MenuBarView.swift

@@ -13,9 +13,6 @@ struct MenuBarView: View {
                 .padding(.horizontal, 12)
                 .padding(.vertical, 8)
 
-            Divider()
-                .padding(.horizontal, 12)
-
             // Open Dashboard button
             Button(action: {
                 let dashboardURL = URL(string: "http://127.0.0.1:\(serverMonitor.port)")!