mksh: color the prompt symbol and hostname label by host

Same host-differentiation as the tmux statusbar: blue accent for
prosrvdemadev01, existing yellow/gray colors kept as the default
elsewhere.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

mksh/mkshrc

@@ -56,6 +56,12 @@ und="$(tput smul 2>/dev/null || echo '\e[4m')"
 # Reset
 rst="$(tput sgr 0 2>/dev/null || echo '\e[0m')"  # Text Reset
 
+# host-specific accent color (default stays as-is; override per host below)
+case $HOSTNAME in
+  prosrvdemadev01) hostcol="$txtblu"; hostlblcol="$txtblu" ;;
+  *) hostcol="$txtylw"; hostlblcol="$txtgry" ;;
+esac
+
 # rust
 export PATH=$PATH:$HOME/.cargo/bin
 # go
@@ -191,7 +197,7 @@ PS4='[$EPOCHREALTIME] '; PS1='#'; (( USER_ID )) && PS1='→'; PS1=$'\001\r''${|
 	\\builtin typeset e=$?
 
 	(( e )) && REPLY+="${txtred}$e${txtgry} "
-	{ ( [[ -n $SSH_CLIENT ]] || [[ -n $SSH_TTY ]] ) && [[ -z $TMUX ]] } && REPLY+="${ita}${txtgry}${HOSTNAME} ${rst}"
+	{ ( [[ -n $SSH_CLIENT ]] || [[ -n $SSH_TTY ]] ) && [[ -z $TMUX ]] } && REPLY+="${ita}${hostlblcol}${HOSTNAME} ${rst}"
         # REPLY+=${USER}@${HOSTNAME%%.*}:
 
 	\\builtin typeset d=${PWD:-?}/ p=~; [[ $p = ?(*/) ]] || d=${d/#$p\//\~/}
@@ -208,4 +214,4 @@ PS4='[$EPOCHREALTIME] '; PS1='#'; (( USER_ID )) && PS1='→'; PS1=$'\001\r''${|
 	print -n "\e]133;A\e\\" # foot sequence for ctrl+shift+x/z
 
 	\\builtin return $e
-} '"${txtylw}${bld}$PS1 ${rst}"
+} '"${hostcol}${bld}$PS1 ${rst}"