Mixed languages in the sidebar: Sometimes a new item gets added but the translation is missing, so it shows in English while everything else is in Spanish.
Truncated subtitles: Spanish text is often longer than English. Check that subtitle text is not cut off, especially on items like "Insights y acciones inteligentes."
Badge text: The word "Nuevo" on badges -- make sure it is not showing "New" in English.
Keyboard shortcut hints: The format "Presiona {{key}} para abrir" might show the raw template text (with curly braces) instead of the actual key if something is broken.
Notification bell count: If there is a number on the bell icon, make sure it uses the correct format (not "1 new notification" in English).
Command Palette commands: The command names and category headings inside the palette may not be translated yet. Note any English text you find.
Logout confirmation: The confirmation message should be fully in Spanish.
Audio feedback messages: When you click the speaker or microphone icons, brief messages like "Audio activado" or "Audio desactivado" may appear -- check these too.
Checklist
All three sidebar group headings are in Spanish
Every sidebar item name is in Spanish
Every sidebar subtitle is in Spanish
Progress bar shows "% completo" (not "% complete")
Keyboard shortcut hints use "Presiona" (not "Press")
Header tagline is "El Motor de Ventas Inteligente"
Search hint shows "Presiona Cmd+K" (or Ctrl+K)
Notification panel title is "Notificaciones"
"Marcar todo como leido" link is in Spanish
Empty notification message is in Spanish
"Ver todas las notificaciones" link is in Spanish
User menu greeting says "Hola, [nombre]"
All user menu items are in Spanish (Configuracion, Personalizar Experiencia, Tema, Cerrar Sesion)
Logout confirmation message is in Spanish
Audio tooltips are in Spanish
Audio toggle feedback messages are in Spanish
Command Palette search placeholder is in Spanish
Command Palette command names are in Spanish (note any that are not)
No English text visible anywhere in the sidebar, header, or command palette
Long Spanish text is not cut off or overlapping in any sidebar item