fix: handle absolute WAYLAND_DISPLAY in -d desktop binding

WAYLAND_DISPLAY may be an absolute path, in which case XDG_RUNTIME_DIR
must not be prepended. The old code always concatenated them, producing
a malformed path like /run/user/1001//run/user/1000/wayland-0 and a
bwrap "Can't find source path" error. Detect the absolute form, use it
as-is, and guard the bind with an existence check.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: netpleb

wrap.sh

@@ -211,8 +211,18 @@ while getopts "r:w:e:abcdfhmnpuv" opt; do
   # grant desktop access (Wayland or X11) and rendering hardware access
   d)
     if [ -n "${WAYLAND_DISPLAY:-}" ] && [ -n "${XDG_RUNTIME_DIR:-}" ]; then
-      # Using Wayland: bind the Wayland display socket
-      bwrap_opts+=(--bind "$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY" "$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY")
+      # Using Wayland: bind the Wayland display socket.
+      # WAYLAND_DISPLAY may be either a bare socket name (resolved relative to
+      # XDG_RUNTIME_DIR, the common case) or an absolute path (in which case
+      # XDG_RUNTIME_DIR must NOT be prepended). Handle both.
+      if [[ "$WAYLAND_DISPLAY" = /* ]]; then
+        wayland_socket="$WAYLAND_DISPLAY"
+      else
+        wayland_socket="$XDG_RUNTIME_DIR/$WAYLAND_DISPLAY"
+      fi
+      if [ -e "$wayland_socket" ]; then
+        bwrap_opts+=(--bind "$wayland_socket" "$wayland_socket")
+      fi
     fi
 
     if [ -n "${DISPLAY:-}" ]; then