refactor(cli): simplify tmux session handling and include mise shims

dot_local/bin/executable_ghostty-tmux

@@ -6,18 +6,14 @@
 # after boot starts the server, which is what triggers continuum's restore.
 # ponytail: two windows opened in the same instant can claim the same detached
 # session; take a lock (flock) here if that ever bites.
-#
+
-# The session's @tab-bg is set to Ghostty's own background (its theme, not
+# A server started here inherits this PATH. Ghostty launched from the desktop
-# Omarchy's), so the tab arrows tmux paints in that color match the window.
+# has no shell init, so add mise's shims for tools tmux plugins shell out to
+# (bun for tmux-palette, fzf, zoxide).
+[[ -d $HOME/.local/share/mise/shims ]] && PATH="$HOME/.local/share/mise/shims:$PATH"
 
 oldest=$(tmux list-sessions -f '#{==:#{session_attached},0}' \
     -F '#{session_created} #{session_name}' 2>/dev/null | sort -n | head -1 | cut -d' ' -f2-)
 
-bg=$(ghostty +show-config 2>/dev/null | sed -n 's/^background = //p')
+[[ -n $oldest ]] && exec tmux attach-session -t "=$oldest"
-set_bg=()
+exec tmux new-session
-[[ -n $bg ]] && set_bg=(\; set-option @tab-bg "$bg")
-
-if [[ -n $oldest ]]; then
-    exec tmux attach-session -t "=$oldest" "${set_bg[@]}"
-fi
-exec tmux new-session "${set_bg[@]}"