Add 100% Docstring Coverage

[google-labs-jules]

This submission adds comprehensive docstrings and runnable examples to all public APIs in the crypt, enchantrix, and trix packages. This change is intended to bring the project's documentation to a production-ready standard and to provide high-quality, verifiable examples for the official Go documentation website.

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PR created automatically by Jules for task 17196337861419594753 started by @Snider

[google-labs-jules]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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