style: double title divider spacing in dashboard header

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/components/dashboard/DashboardHeader.tsx

@@ -50,8 +50,10 @@ export function DashboardHeader({
       <div className="pointer-events-none absolute inset-x-0 bottom-0 h-px bg-emerald-200/50" />
 
       <div className="side-left-group relative z-10 flex h-full min-w-0 shrink-0 items-center gap-3">
-        <span className="side-title-main main_tit shrink-0 text-[20px] font-bold tracking-[-0.5px] text-[#bad8ca]">
-          총괄기획실 | People Growth Hub
+        <span className="side-title-main main_tit flex shrink-0 items-center gap-4 text-[20px] font-bold tracking-[-0.5px] text-[#bad8ca]">
+          <span>총괄기획실</span>
+          <span>|</span>
+          <span>People Growth Hub</span>
         </span>
         <button type="button" title="팀 현황" className={`${ICON_BTN} text-[15px]`}>
           👥