- filing_attestation.py: generates cover page attesting PW submitted document
to recipient with date/time stamp, contact info, and digital signature
- fax_sender.py: sends PDFs via VitalPBX API, polls for delivery, generates
attested copy for customer records
- dot-lookup.ts: if DOT has pending MCS-150 order, show green 'UPDATE SUBMITTED'
instead of red 'OVERDUE' in compliance checker
- requirements.txt: add pyhanko + cryptography for PDF digital signatures
