Previously runtime-artifact-layout.cjs set process.env.GSD_TEST_MODE at the
top level before requiring bin/install.js. Any caller that required this module
would silently inherit the GSD_TEST_MODE='1' side-effect for the lifetime of
the process.
Replace with a lazy loader (loadInstallExports / getInstallExports) that saves
the current GSD_TEST_MODE, sets it to '1' only if it was undefined, calls
require(), and restores the original value in a finally block. The exported
module.exports cache (_installExports) ensures the require is run at most once.
Converter names are now passed as strings to skillsKind; the stage closure
resolves them via getInstallExports()[converterName] at call time, so the
installer is not loaded until a stage() function is actually invoked.
Verification: node -e "require('./...runtime-artifact-layout.cjs'); console.log(process.env.GSD_TEST_MODE)"
prints undefined.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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