The mateo-berri PAT now arrives via systemd LoadCredential as a file
instead of the EnvironmentFile, so pytest, the proxy, and the
model-driven claude CLI never inherit it and a same-UID /proc read
cannot lift it. run_daily.sh reads the credential when present, still
accepts an exported GITHUB_TOKEN for manual runs, and dies up front
when publishing is enabled with neither. Full CLI sandboxing is
tracked in LIT-5420
Ports the daily cron VM publisher from the unmerged tests/claude_code
checkout so the automation runs the e2e suite from litellm_internal_staging.
Adds find_regressions to matrix_builder for the green to red auto-merge
gate, pins the cron venv to Python 3.12, and ships the systemd units, env
template, and runbook alongside
