Keep client connections open for slow API requests

Kalamar's daemon drops a client connection after 30 s of inactivity,
although its API user agent waits up to 120 s for Kustvakt -- so
statistics requests over large virtual corpora fail for the browser
while Kustvakt keeps computing. Raise the daemon's inactivity timeout
in the deployment overlay accordingly.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Change-Id: Ic23353039cb6c82560d9e86fdb16ab9ca1401e84
1 file changed