[FEAT] CertiSource atti-service.php integration: structured data, PAT auth, ATECO fix
- VisuraService::fetchFromCertiSource: new atti-service.php API (POST richiesta → polling stato → GET dati)
- Structured data mapping: sedi/ateco_codes/cariche/addetti → formato interno
- mapAtecoToNis2Sector: allineato ENUM DB (digital_infra, water, waste, public_admin, ecc.)
- config.php: CERTISOURCE_API_URL, CERTISOURCE_API_KEY, CERTISOURCE_POLL_MAX/SEC
- PHP 8.4: curl_close → unset, usato in logAiInteraction
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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