Migrate the two remaining action-routing consumers from compatibility
Decision.Slings fields to authoritative Decision.CapabilitySelection:
- refusesCommand: reads CapabilitySelection.Fn instead of Slots.Fn
- ActHasEntityTarget: reads CapabilitySelection.Resolved and
CapabilitySelection.Args instead of Slots.HasFn and Slots.Args
Slots.Text remains the source for entity text when positional args do
not contain the target (unchanged).
Regression tests prove:
- prohibited sentinel preserved byte-for-byte through SelectCapability
- blanked Slots.Fn/Args/HasFn do not affect migrated consumers
- Praxis/Hexis entity-target routing unchanged
- stage-0 deterministic act unchanged
- classifier/extractor act unchanged
do not remove the compatibility mirrors yet.
