Frontend (jobs/new):
- Replace isValidCNPJ (checksum algorithm) with isValidDocument: accepts
any tax document with 5–30 alphanumeric chars (CNPJ, EIN, VAT, etc.)
- Add cleanPhone(): strips formatting chars (dashes, spaces, parens) and
keeps only digits + optional leading '+'; replaces cleanDigits+prepend
- Phone sent as '+5511999998888' if user typed '+55...', or '11999998888'
if no country code was provided — no '+' blindly prepended anymore
- Company document sent stripped of all non-alphanumeric before API call
- Update label placeholder from '00.000.000/0000-00' to 'CNPJ, EIN, VAT...'
- Rename error key invalidCnpj → invalidDocument in all 3 locales (pt, en, es)
Backend (create_company use case):
- Add SanitizePhone() to utils/sanitizer.go: strips all non-digit chars
except a leading '+'; '(11) 99999-8888' → '11999998888'
- Apply SanitizePhone to input.Phone before persisting to DB
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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