- Add formatos.md with native and dolibarr format specs
- Update api.md with both format examples and formats endpoint
- Update arqui.md with formats layer and new data flow
- Update formato_datos.md to reference formatos.md
- Fix JSON syntax errors in api.md
- Fix typos in verifactu.md and formato_datos.md
- Update README.md with current status (anulation implemented)
- Move all Python test files to test/ folder
- Remove certificates from data/certs/ and test/certs/