Purpose
-------
Expose the stdlib-only mutation engine used by ``oct mutate``.
Responsibilities
----------------
- Export the enumeration records and functions that define a mutant's identity.
- Keep the runner, report, and Click adapters out of package-root imports.
Diagnostics
-----------
Domain: OCT-MUTATION
Levels:
L2 - lifecycle
L3 - enumeration details
L4 - deep tracing
Contracts
---------
- Importing this package must require only the Python standard library.
- v1 measures and reports; it never gates and never sets an outcome exit code.
Dependencies
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- oct.mutation.engine (stdlib-only AST enumeration and application)