Add an "Adopting in another app" section to the README (version,
.munitor.yml example, CircleCI settings, contexts and secrets, branch
model, deployment infrastructure, known limitations, 0.3.3 upgrade
notes), a tier and standards statement, and reference rows for the
previously undocumented .munitor.yml keys. Add SECURITY.md,
.github/CODEOWNERS and a CONTRIBUTING workflow section (branches,
Conventional Commits, DCO sign-off, local checks), and fix the
nonexistent `make test` target in CLAUDE.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: James Maes <james@kof22.com>