delete_sessions(exclude_active_write_guards=True) dropped guarded rows
silently: the web bulk-delete endpoint returned only a count and the
dashboard removed every selected row optimistically, so refused rows
reappeared on the next reload with no explanation.
The store now appends refused ids to an optional skipped_ids list inside
the same write transaction, the endpoint returns them as skipped_active,
and SessionsPage keeps those rows listed. Also hoists the
SessionActiveWriteGuardError imports to module top (hermes_state_errors
is stdlib-only) and drops the assertion-less lineage comment in the test.
907e3188da