CoreCI's buildIsolatedEnv only forwards CI_* and CORECI_* prefixed vars
from os.Environ(). GITEA_TOKEN is not prefixed, so it's only available
if it's in the job vars map (via ${{ secrets.GITEA_TOKEN }}). The
secret resolver's os.Getenv fallback should work, but to be safe, also
set CI_GITEA_TOKEN in the workflow env (always forwarded as a CI_* var).
Add debug output for GITEA_TOKEN length and CI context vars.
---ci---
project: orca
phase: 1
milestone: v0.16
status: execute
---/ci---
Jon Chery
5c07fafa18