fix(cmux): preserve automatic terminal tab titles

Author: Ynakatsuka

home/private_dot_config/zsh/cmux-agent-board.zsh

@@ -1,12 +1,18 @@
 # Track foreground command activity for each cmux terminal surface.
 if [[ -n "${CMUX_WORKSPACE_ID:-}" && -n "${CMUX_SURFACE_ID:-}" ]]; then
   autoload -Uz add-zsh-hook
+  typeset -g _cmux_agent_board_prompt_seen=false
 
   _cmux_agent_board_command_started() {
     "$HOME/.local/bin/cmux-agent-board-state" working >/dev/null
   }
 
   _cmux_agent_board_command_finished() {
+    # Let cmux assign its directory-based title before the first prompt.
+    if [[ "$_cmux_agent_board_prompt_seen" == false ]]; then
+      _cmux_agent_board_prompt_seen=true
+      return
+    fi
     "$HOME/.local/bin/cmux-agent-board-state" idle >/dev/null
   }
 

scripts/test-cmux-agent-board-state.sh

@@ -100,7 +100,10 @@ chmod +x "$shell_home/.local/bin/cmux-agent-board-state"
 HOME="$shell_home" MOCK_SHELL_CALLS="$shell_calls" \
   CMUX_WORKSPACE_ID='workspace-id' CMUX_SURFACE_ID='surface-id' \
   zsh -dfc '
+    set -e
     source "$1"
+    _cmux_agent_board_command_finished
+    [[ ! -e "$MOCK_SHELL_CALLS" ]]
     _cmux_agent_board_command_started
     _cmux_agent_board_command_finished
   ' _ "$SHELL_HOOKS"