Serena dropped from .mcp.json + .serena/ untracked (unused in practice,
flaky on Unity per CLAUDE.md's own caveat); memory stack is now three
layers. Standing auths recorded in the skill: docs auto-commit + auto-push
main->gitea (origin stays ask-first).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>