feat: Swagger UI + OpenAPI 3.0 spec at /docs

- Full OpenAPI 3.0 spec covering all 20 endpoints
- Swagger UI served at /docs via CDN (zero deps)
- Spec at /docs/openapi.yaml (go:embed)
- Real data examples (Selic 15%, USD/BRL 5.19, etc.)
- Publicly accessible (no API key needed for docs)
This commit is contained in:
2026-02-10 12:49:47 -03:00
parent f7c8b446bf
commit 3080a60711
6 changed files with 761 additions and 0 deletions

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