feat(ui,tickets): aplicar visual Rever (badges revertidas), header com play/pause, edição inline com cancelar, empty states e toasts centralizados; novas mutations Convex (updateSubject/updateSummary/toggleWork)

web/src/app/layout.tsx

@@ -18,10 +18,10 @@ const jetBrainsMono = JetBrains_Mono({
   display: "swap",
 })
 
-export const metadata: Metadata = {
-  title: "Atlas Support",
-  description: "Plataforma omnichannel de gestão de chamados",
-}
+export const metadata: Metadata = {
+  title: "Sistema de chamados",
+  description: "Plataforma de chamados da Rever",
+}
 
 export default async function RootLayout({
   children,
@@ -43,7 +43,7 @@ export default async function RootLayout({
         <ConvexClientProvider>
           <AuthProvider demoUser={demoUser} tenantId={tenantId}>
             {children}
-            <Toaster position="top-right" richColors />
+            <Toaster position="bottom-center" richColors />
           </AuthProvider>
         </ConvexClientProvider>
       </body>