Closed as superseded/completed by the later dashboard content-ready and live startup latency work.

This Ticket corrected the mistaken premise that first frame readiness represented usable Panel startup readiness, but its single fixture-row rows-ready metric was later judged insufficient for the user-visible delay. Follow-up work strengthened the metric to dashboard content-ready snapshot validation and then used live-path measurements to identify and fix the Pod status probe/session-log startup bottleneck.

Relevant follow-ups:
- 00001KVDETSN6: user-visible dashboard content-ready metric and snapshot validation;
- 00001KVDQH839: shell-enter launch-path readiness measurement;
- 00001KVF0ZJM5: live startup latency fix by removing duplicate Pod probes and session-log reads from the initial list path.