Core global-node server composition

Chose Core makeGlobalNode(...) declarations composed once at each server application boundary over module-load startup or per-request Effect.provide(...), because CLI/scripts must not pay server setup cost and stable layers must not be rebuilt per request. Add the node to standalone Server’s applicationServices and integrated OpenCode’s module-level app group; compile through AppNodeBuilder.build(...) or AppNodeBuilderV1.build(app) respectively, preserving required unbound replacements.