After a PostgreSQL round-trip, job timestamps lose their monotonic
clock component, making the subtraction susceptible to wall-clock
adjustments producing a small negative delta. Floor at 1ms since
a zero or negative queue wait is meaningless. Fixes TestProvisionerJobQueueWaitMetric
flakes where small negative values (~ -2ms) are observed.

zedkipp deleted the zedkipp/job-queue-negative branch

zedkipp changed the title fix: floor provisioner job queue wait metric at zero fix: floor provisioner job queue wait metric