The daemon named every feature twice: once in the interactive
handler's sixteen-argument constructor, once across the source list,
the tick, and the boot pass. Both assemblies are now loops over one
ClawExtension trait, so an integration is a struct plus a line in
the standard set. The chain order, the detect order, and the boot
order are unchanged; the surface suite pins them. Each extension
struct is the boundary a later move into the integration crates
would lift wholesale.