Capture live-session Hyprland output and fall back to a shell

Redirect the live autologin compositor's stdout/stderr to
/var/log/hyprland-live.log, and on exit drop to an interactive shell
showing the return code instead of letting the getty autologin
respawn-loop hide any startup failure behind a blank blinking cursor.
Makes a failed live boot diagnosable and leaves the medium usable.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

iso/airootfs/root/.bash_profile

@@ -9,5 +9,11 @@ if [[ "$(tty)" == "/dev/tty1" ]] && [[ -z "$WAYLAND_DISPLAY" ]]; then
     # Software cursors: hardware-cursor planes are often unusable in VMs and
     # show as invisible/garbled; this is the reliable choice for a live medium.
     export WLR_NO_HARDWARE_CURSORS=1
-    exec Hyprland
+    # Run the compositor, capturing its output so a failed live boot is
+    # diagnosable (Hyprland also keeps its own log under $XDG_RUNTIME_DIR/hypr/).
+    # On exit, drop to an interactive shell with the error in view instead of
+    # letting the getty autologin respawn-loop hide it behind a blank cursor.
+    Hyprland &>/var/log/hyprland-live.log
+    echo "Hyprland exited (rc=$?). Log: /var/log/hyprland-live.log"
+    exec bash -i
 fi