Regenerate all protos from the module root with full relative paths so
descriptors register as e.g. auth/proto/auth.proto instead of bare
auth.proto. The protobuf file registry is process-global, so generic
filenames collided with other libraries and panicked at init
(proto: file "auth.proto" is already registered, #3).
Go API and wire format unchanged.
The two hop examples imported x/config only for the NodeConfig type to
build demo nodes, dragging x (and its viper dependency tree) under the
plugin SDK — inverting the x -> plugin layering and one pin-bump away
from a package import cycle. The node payload is plain JSON on the
wire, so the examples now use local struct types with the same JSON
shape. go.mod shrinks to grpc + protobuf.
ginuerzh