Didactic hover explanation for the "Last Validated" / "Cached Since"
timestamp, mode-aware because the timestamp means different things:
under the source-validation modes it is a real confirmation that updates on each
successful online check, while under ttl/none it is a fixed known-good
baseline (when the cache was established) that does NOT advance on
repeat offline checks.
Didactic hover explanation for the "Last Validated" / "Cached Since" timestamp, mode-aware because the timestamp means different things: under the source-validation modes it is a real confirmation that updates on each successful online check, while under ttl/none it is a fixed known-good baseline (when the cache was established) that does NOT advance on repeat offline checks.