OptionaldescriptionOptional to match the real package's event shape, so an event built
with the real defineEvent flows into this seam; the engine's own
vocabulary always sets it.
OptionalmaxAdvisory volume cap enforced by the shell's store — at most one submission per interval (ms).
Matched verbatim downstream — frozen once shipped.
Type-level payload carrier — never set at runtime (the real package's
defineEvent leaves it unset the same way).
Bumped on any payload shape change; the name never changes.
A telemetry event descriptor — a structural mirror of
@sanity/telemetry'sDefinedTelemetryLog, so shells hand these straight to their store logger.