Run as non-root user (fixes Claude Code refusing bypassPermissions as
root, which caused all agent spawns to exit instantly with no session).
Add read-only root filesystem, drop all capabilities, set
no-new-privileges, bind port to localhost only, and require
GIT_USER_NAME/GIT_USER_EMAIL env vars at startup.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
