Verify GitHub Actions CI pipeline

Compare examples of workflows like [social-service-ea](https://github.com/decentraland/social-service-ea/tree/main/.github)

- [x] Confirm workflow files exist under `.github/workflows/`.
- [x] Open a PR and verify CI runs build, typecheck/lint, and tests.
- [ ] If tests need DB, add a Postgres service/container in CI. (Better check this after creating the migrations).
- [ ] Provide required secrets/env vars in repo/org settings for CI. (Ask charly about those)

Compare the repository's .github/workflows/ with the linked social-service-ea examples, then open a PR to verify build, typecheck/lint, and test runs. Check the migrations before deciding whether a Postgres service is needed, and ask charly about required secrets and environment variables. Done means CI runs the required checks with all necessary configuration.

Written by the indexing model from the issue text.