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

dot_zshrc

@@ -63,7 +63,38 @@ command -v suv >/dev/null 2>&1 && eval "$(suv init zsh)"
 [ -s "$HOME/.config/envman/load.sh" ] && . "$HOME/.config/envman/load.sh"
 
 # Prompt — starship, consistent with fish
-command -v starship >/dev/null 2>&1 && eval "$(starship init zsh)"
+if command -v starship >/dev/null 2>&1; then
+    eval "$(starship init zsh)"
+    ZLE_RPROMPT_INDENT=0   # right_format ($time) flush with the edge
+
+    # Transient prompt (fish has enable_transience; zsh has no starship
+    # built-in): on Enter, collapse the prompt to ❯ + time, restore it next
+    # precmd. Must be registered before zsh-syntax-highlighting below.
+    # Profiles live in starship.toml; strip add_newline's leading \n.
+    _starship_prompt=$PROMPT _starship_rprompt=$RPROMPT
+    _starship_profile() {
+        local s
+        s=$(starship prompt --profile "$1" --status="${STARSHIP_CMD_STATUS:-}")
+        print -rn -- "${s#$'\n'}"
+    }
+    _starship_transient() {
+        PROMPT='$(_starship_profile transient)' RPROMPT='$(_starship_profile transient_right)'
+        zle .reset-prompt
+    }
+    _starship_restore() { PROMPT=$_starship_prompt RPROMPT=$_starship_rprompt; }
+    autoload -Uz add-zle-hook-widget && add-zle-hook-widget line-finish _starship_transient
+    add-zsh-hook precmd _starship_restore
+fi
+
+# Window title — port of fish_title.fish (+ tmux window name, as in
+# fish's conf.d/50-terminal-title.fish)
+_set_win_title() {
+    local t=${(%):-%~}
+    [[ -n $SSH_TTY ]] && t="${${(%):-%m}[1,10]}:$t"
+    printf '\e]0;%s\a' "$t"
+    [[ -n $TMUX ]] && printf '\ek%s\e\\' "$t"
+}
+autoload -Uz add-zsh-hook && add-zsh-hook precmd _set_win_title
 
 # television: ctrl-t smart autocomplete (its ctrl-r is taken over by atuin
 # below, as in fish)