* feat(pro): harden enterprise contact form with mandatory fields and lead qualification
- Add mandatory phone number and company fields (client + server validation)
- Block free email domains (gmail, yahoo, hotmail, etc.) with 422 response and inline error
- Include phone (clickable tel: link) and email domain (clickable company link) in sales notification
- Add i18n translations for phone placeholder and work email error across all 21 locales
- Tighten phone regex to require start/end with digit, rejecting junk input
* fix(pro): rebuild static assets and fix contact handler tests
- Rebuild public/pro/ bundle to include new phone/company/email validation fields
- Add phone field to test validBody() fixture
- Add tests for free email domain rejection (422), missing org, missing/invalid phone
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