Changelog: Event contracts (canverly-contracts)

Generated from canverly-contracts/CHANGELOG.md on origin/main. Only what touches the public contract (entries that cite /v1 routes) is included; the full record stays in the repository. The text is the service’s own, in Portuguese.

The CHANGELOG.md exists, but it does not record any public-contract change yet.

CHANGELOG.md entries outside the public contract (internal, test or operations) omitted here: 0.