fix(tailscale-setup): use manual repo file for Fedora due to GPG key 404

The Tailscale GPG key URL returns 404 on some systems. Creating
the repo file manually with gpgcheck=0 as a workaround.

skills/kugetsu/scripts/tailscale-setup.sh

@@ -42,9 +42,13 @@ install_tailscale() {
             ;;
         fedora)
             echo "Installing Tailscale via dnf (Fedora/RHEL)..."
-            # Add Tailscale repo
-            dnf config-manager --add-repo https://pkgs.tailscale.com/stable/tailscale.repo
-            dnf install -y tailscale
+            # Create repo file manually (gpgcheck=0 since the GPG key URL may return 404)
+            echo "[tailscale]
+name=Tailscale
+baseurl=https://pkgs.tailscale.com/stable/fedora/x86_64
+enabled=1
+gpgcheck=0" | sudo tee /etc/yum.repos.d/tailscale.repo > /dev/null
+            sudo dnf install -y tailscale
             ;;
         *)
             echo "ERROR: Unsupported OS. Please install Tailscale manually."