Applies the pairing constraint to a candidate target-agent list:
ZERO pairing rows → the co-agent is universal; the candidates are returned unchanged
(today's flow untouched).
One or more rows → only candidates that appear among the pairing targets are
returned, ordered by the pairings' Sequence. Paired targets the user can't see /
run (absent from agents) are silently dropped.
Applies the pairing constraint to a candidate target-agent list:
Sequence. Paired targets the user can't see / run (absent fromagents) are silently dropped.Pure and UUID-casing safe (
NormalizeUUIDkeys).