The plugin page fetched the newest 500 jobs and 500 activities
cluster-wide and filtered them by job type in the browser. On a busy
cluster that window can hold none of the selected type (433
erasure_coding + 64 ec_balance jobs, 497 ec_balance activities), so
/plugin/lanes/default/execution?job=ec_vacuum showed "No execution
jobs tracked yet" while the server had seven recent ec_vacuum jobs.
When a job-type tab is active, fetch the queue/detection/execution
lists with job_type=<selected> so the server filters before applying
the limit, and refetch when the selected job type changes. The
unscoped lists are still fetched for the status cards and the overview
per-type summary.