refactor: enhance admin panel styling with better card patterns

- Dashboard: use admin-card for sections, refine progress bars and action badges
- Applications: enhanced card styling with p-3 and better text hierarchy
- Emulator: convert remaining 'card' classes to 'admin-card'
- All changes eliminate inline styles and use consistent Tailwind patterns

Co-authored-by: openhands <[email protected]>

src/app/admin/rooms/[id]/page.tsx

@@ -58,12 +58,12 @@ export default async function AdminRoomDetail({
         </div>
       </div>
 
-      <div className="card">
+      <div className="admin-card">
         <table>
           <tbody>
             {fields.map(([label, value]) => (
               <tr key={label}>
-                <th style={{ width: "35%", whiteSpace: "nowrap" }}>{label}</th>
+                <th className="w-[35%] whitespace-nowrap">{label}</th>
                 <td>{value}</td>
               </tr>
             ))}