Narrowing mirrors MultiFormatLoadResult for terminal arms: a loaded arm
cannot carry errors, a no-fill arm cannot carry handles or errors, and an
error arm cannot carry handles. loaded-partial is the arm where both
arrays are populated. Hook-only arms are idle, loading, and
stale-by-policy.
Multi-format hook state, discriminated on
status.Narrowing mirrors
MultiFormatLoadResultfor terminal arms: aloadedarm cannot carry errors, ano-fillarm cannot carry handles or errors, and anerrorarm cannot carry handles.loaded-partialis the arm where both arrays are populated. Hook-only arms areidle,loading, andstale-by-policy.