feat(dashboard): mobile 2-col stats, add relative time to recent activity

app/routers/web.py

@@ -171,11 +171,14 @@ def dashboard(request: Request, user: User = Depends(get_current_user_web), db:
     else:
         sent_pct = delivered_pct = received_pct = 0
 
+    from datetime import datetime, timezone as _tz
+
     return templates.TemplateResponse("dashboard.html", {
         "request": request, "user": user, "profiles": profiles,
         "total": total, "sent": sent, "delivered": delivered, "received": received,
         "countries": countries, "recent": recent,
         "sent_pct": sent_pct, "delivered_pct": delivered_pct, "received_pct": received_pct,
+        "now": datetime.now(_tz.utc),
     })