Tune idle timeout, heartbeat redirect, and update project context

universal-runtime/entrypoint.sh

@@ -101,10 +101,23 @@ cat > /opt/portal/index.html <<'HTML'
 
     const enableHeartbeat = (new URLSearchParams(location.search).get('hb') ?? '1') !== '0';
     const sid = new URLSearchParams(location.search).get('sid');
+    const SESSION_CLOSED_URL = '/?session_closed=idle';
+    function goSessionClosed() {
+      try {
+        if (window.top && window.top !== window) {
+          window.top.location.href = SESSION_CLOSED_URL;
+          return;
+        }
+      } catch (e) {}
+      window.location.href = SESSION_CLOSED_URL;
+    }
     async function touch() {
       if (!sid) return;
       try {
-        await fetch(`/api/sessions/${sid}/touch`, {method:'POST', credentials:'include'});
+        const res = await fetch(`/api/sessions/${sid}/touch`, {method:'POST', credentials:'include'});
+        if (!res.ok) {
+          goSessionClosed();
+        }
       } catch (e) {}
     }
     if (enableHeartbeat) {