fix: pin absolute script path in status-right widget

The #() body runs with the tmux server's PATH; a bare 'party' silently
broke the widget for uninstalled or non-standard-prefix hosts.

party

@@ -430,6 +430,22 @@ compute_default_party_name() {
     printf 'party-%s\n' "$rand"
 }
 
+# Absolute path to this script, for embedding in tmux server state that
+# outlives this invocation (the status-right #() widget runs with the
+# tmux server's PATH, which need not contain an installed `party`).
+# $0 forms: absolute — take it; relative-with-slash — anchor to cwd;
+# bare word — resolve via PATH, falling back to $0 verbatim. No `--`
+# after command -v/dirname/basename: old illumos userland predates it,
+# and $0 here never starts with '-'.
+party_self_path() {
+    case "$0" in
+        /*)  printf '%s\n' "$0" ;;
+        */*) printf '%s/%s\n' "$(cd "$(dirname "$0")" && pwd)" \
+                              "$(basename "$0")" ;;
+        *)   command -v "$0" 2>/dev/null || printf '%s\n' "$0" ;;
+    esac
+}
+
 
 # After spawning the party server, configure status line and hooks.
 # All commands run against -S "$sock". Every literal name embedded
@@ -469,8 +485,9 @@ EOF
     chgrp "$TMUX_PARTY_GROUP" "$notify_script"
 
     "$PARTY_TMUX" -S "$sock" set-option  -s exit-empty       on
+    party_self=$(party_self_path)
     "$PARTY_TMUX" -S "$sock" set-option  -g status-right \
-        "party: #(party who --short --socket $sock 2>/dev/null)"
+        "party: #($party_self who --short --socket $sock 2>/dev/null)"
     # Join/leave broadcast. Hook bodies fan a display-message out to
     # every attached client of THIS server via the notify helper script.
     # tmux substitutes #{client_user} before running the shell command.