fix(desktop): improve responsive app layout and countdown placement

public/addons.js

@@ -3,7 +3,7 @@
   const DRAFT_KEY = 'lifeos_today_draft_v1';
   const localDay = () => { const d = new Date(); return `${d.getFullYear()}-${String(d.getMonth()+1).padStart(2,'0')}-${String(d.getDate()).padStart(2,'0')}`; };
   const escapeHtml = value => String(value || '').replace(/[&<>]/g, char => ({ '&': '&amp;', '<': '&lt;', '>': '&gt;' }[char]));
-  const APP_VERSION = '1.5.0';
+  const APP_VERSION = '1.5.1';
   const appIds = ['today', 'timeline', 'museum', 'insights', 'profile', 'tasks', 'calendar', 'system'];
   const t = (key, values) => LifeI18n.t(key, values);