Run gh auth setup-git in entrypoint to wire gh as git credential helper #14

Problem

Inside the container, git push hangs waiting for credentials because no credential helper is configured — even though gh is authenticated via GH_TOKEN.

Fix

Add gh auth setup-git to the entrypoint script so gh is registered as a git credential helper at container startup. This lets git push, git fetch, etc. work seamlessly without embedding tokens in URLs.

Implementation

In entrypoint.sh, add before the final exec line:

# Wire gh as git credential helper so git push/fetch work without token embedding
gh auth setup-git