go.mod and go.sum move to mesh-sdk 14fd5cb68fd1, the commit on its main that holds go/catalogue, go/overlay and go/validate (ADR 0453 clause 2); vendor/modules.txt follows in the last of the six commits.
The runtime knows no language: the build makes each served entrypoint executable. For a TypeScript
bundle that is <entry>.serve.mjs, which imports the entrypoint and serves what it registered over
MCP on stdio through the bundle's own SDK. The build records its launchers on the bundle, and the
composer names the launcher where a build wrote one and the entrypoint where it did not, so bundles
built before this keep serving until they are rebuilt.
mesh-tools
jochen