4c2961c51 added referenced_skill_names() so the curator never archives a
skill a cron job depends on — paused jobs and infrequent schedules would
otherwise age their skills out and the next run fails to load them.
62972060c then taught the scheduler that jobs may store ABSOLUTE skill
paths, normalizing them through normalize_skill_lookup_name before
skill_view. The protection set kept returning the raw string, so it now
holds a full path while the curator matches it against bare skill names.
Those jobs silently lost their protection: the skill is archived, and the
next fire logs a warning and runs the job without its instructions.
Canonicalize each reference the same way the scheduler resolves it, with
a deferred import and a verbatim fallback so a resolver failure can never
drop a name (referenced_skill_names has exactly one caller, the curator's
protection lookup, so nothing else sees the change).
d135f64b51