Fix noVNC iframe height to fill screen and increase Xvfb resolution

backend/core/playwright_manager.py

@@ -148,7 +148,7 @@ class PlaywrightManager:
             
             cls._vnc_context = await cls._vnc_browser.new_context(
                 user_agent=cls.DEFAULT_USER_AGENT,
-                viewport={"width": 1200, "height": 750}
+                viewport={"width": 1920, "height": 1000}
             )
             
             cls._vnc_page = await cls._vnc_context.new_page()

frontend/src/pages/Login.tsx

@@ -147,10 +147,11 @@ export const Login: React.FC = () => {
                 </div>
 
                 {/* VNC Iframe */}
-                <div className="flex-1 bg-gray-900">
+                <div className="flex-1" style={{ minHeight: 'calc(100vh - 80px)' }}>
                     <iframe
                         src={getVncUrl()}
-                        className="w-full h-full border-0"
+                        className="w-full border-0"
+                        style={{ height: 'calc(100vh - 80px)' }}
                         title="TikTok Login"
                     />
                 </div>

supervisord.conf

@@ -5,7 +5,7 @@ logfile_maxbytes=0
 loglevel=info
 
 [program:xvfb]
-command=Xvfb :99 -screen 0 1280x800x24
+command=Xvfb :99 -screen 0 1920x1080x24
 autorestart=true
 priority=100
 stdout_logfile=/dev/stdout