chore(config): update terminal, tmux, and starship configurations

dot_config/tmux/executable_tab-label.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+# ~/.config/tmux/tab-label.sh — the non-editor tab label, kitty tab_bar.py's
+# rule: the repo the pane's cwd belongs to (dir name if no repo, ~ at home).
+# Editors (the open file) are handled in tmux.conf's automatic-rename-format.
+# Args: $1 pane_current_path  $2 window_id
+
+path=$1 window=$2
+
+if [[ $path == "$HOME" ]]; then
+    label='~'
+else
+    dir=$path
+    while [[ -n $dir && ! -e $dir/.git ]]; do dir=${dir%/*}; done
+    root=${dir:-$path}
+    label=${root##*/}
+fi
+printf '%s' "$label"
+
+# tmux runs #() jobs async and only re-checks a window's name on pane output,
+# so after a `cd` the tab would keep the old label until the next keystroke.
+# Re-arming automatic-rename makes tmux re-check now and pick up this output.
+if [[ -n $window && $(tmux display -p -t "$window" '#W' 2>/dev/null) != *"${label:0:26}"* ]]; then
+    tmux set -w -t "$window" automatic-rename on >/dev/null 2>&1 &
+fi