fix(04-05): three post-deploy bug fixes

- Admin client list: remove Timer column, rename Acconto→Importo incassato
  and Saldo→Importo da saldare (calculated from payment amounts, not badges)
- Project workspace timer: pass projectId prop to TimerCell so it calls
  startTimer(projectId) directly instead of startTimerForClient(projectId)
  which was failing with "nessun progetto trovato"
- Public client page: pass client.token (real DB token) not the URL path
  segment (which may be a slug) to ClientDashboard → fixes approve/chat APIs

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/client/[token]/page.tsx

@@ -113,7 +113,7 @@ export default async function ClientPage({
     return (
       <ClientDashboard
         view={projectViewToClientView(client, view)}
-        token={token}
+        token={client.token}
         comments={view.comments as unknown as Comment[]}
       />
     );
@@ -155,7 +155,7 @@ export default async function ClientPage({
                 {view ? (
                   <ClientDashboard
                     view={projectViewToClientView(client, view)}
-                    token={token}
+                    token={client.token}
                     comments={view.comments as unknown as Comment[]}
                   />
                 ) : (