Resolve Trunk Promotion Conflict

Nucleic-Session: 20A52F7E-A10D-4B59-B650-D3FD6BC3B46B
Co-authored-by: Nucleic <[email protected]>

NucleicRemote/NucleicRemote/Views/SettingsView.swift

@@ -162,8 +162,22 @@ struct PairingIntroView: View {
     private var pairingStatus: some View {
         switch store.connectivity {
         case .connecting, .reconnecting:
+            // A first tailnet pairing with no auth key detours through a browser login
+            // that can take minutes — and this intro is the ONLY screen an unpaired phone
+            // has (no Settings tab yet), so the way back to the login page must live here.
+            if let loginURL = store.tailnetLoginURL {
+                VStack(spacing: 6) {
+                    Label("Approve this iPhone in your browser to join your tailnet.",
+                          systemImage: "person.crop.circle.badge.checkmark")
+                        .font(.footnote).foregroundStyle(.secondary)
+                        .multilineTextAlignment(.center).padding(.horizontal, 32)
+                    Link("Open the Tailscale login page", destination: loginURL)
+                        .font(.footnote.weight(.medium))
+                }
+            } else {
                 Label("Connecting to your Mac…", systemImage: "arrow.triangle.2.circlepath")
                     .font(.footnote).foregroundStyle(.secondary)
+            }
         case .hostOffline:
             Label("Can't reach your Mac. Make sure it's on the same Wi‑Fi and remote access is on.",
                   systemImage: "wifi.exclamationmark")