feat: add ads/sponsor/captcha modules and polish home & chat UI

frontend/app/chat/[id]/ChatRoomClient.tsx

@@ -1856,12 +1856,7 @@ function InvitePanel({
         value={input}
         onChange={(e) => setInput(e.target.value)}
         placeholder="username1, username2"
-        className="w-full px-3.5 h-10 rounded-lg outline-none"
-        style={{
-          background: "var(--bg)",
-          border: "1px solid var(--line)",
-          color: "var(--ink)",
-        }}
+        className="field"
       />
       <button
         onClick={submit}
@@ -1929,12 +1924,7 @@ function SettingsPanel({
           value={name}
           onChange={(e) => setName(e.target.value)}
           maxLength={32}
-          className="w-full px-3.5 h-10 rounded-lg outline-none"
-          style={{
-            background: "var(--bg)",
-            border: "1px solid var(--line)",
-            color: "var(--ink)",
-          }}
+          className="field"
         />
       </div>
       <div>
@@ -1949,12 +1939,7 @@ function SettingsPanel({
           onChange={(e) => setDescription(e.target.value)}
           maxLength={200}
           rows={4}
-          className="w-full px-3.5 py-2.5 rounded-lg outline-none resize-none"
-          style={{
-            background: "var(--bg)",
-            border: "1px solid var(--line)",
-            color: "var(--ink)",
-          }}
+          className="field resize-none"
         />
       </div>
       <button