One row of the generated uniform observational-hook registry. kind is
either an original HookDescription discriminator (e.g. 'entry',
'post named') or a HookBoundaryKind for an FSL boundary hook,
phase is the HookPhase the hook runs in, and target is the
normalized HookTarget it is bound to. The triple
(kind, target, phase) is the registry key the spec calls for.
One row of the generated uniform observational-hook registry.
kindis either an original HookDescription discriminator (e.g.'entry','post named') or a HookBoundaryKind for an FSL boundary hook,phaseis the HookPhase the hook runs in, andtargetis the normalized HookTarget it is bound to. The triple(kind, target, phase)is the registry key the spec calls for.