"""Read-only discovery package.

Submodules:
  system    - core system facts + safe subprocess helper
  services  - runtimes, systemd services, databases, cron
  git       - git repository metadata (credential-sanitized)
  projects  - web project type classification
  quick     - fast baseline snapshot (install/register time)
  full      - complete inventory orchestration + snapshot persistence

Every probe in this package is strictly read-only.
"""