DevSoftTech Server
21ddeefe40
fix: Running OPD zero-value validity, update_doc_field HTTP 500, PDF Unicode font (Devanagari)
- Opd.php showfee(): exclude zero-amount OPD from validity window query
- Opd.php confirm_opd(): anchor last_opdvisit_date to most recent paid OPD for zero-value running
- Opd.php buildOpdLetterPrintData(): use paid OPD start date for expiry on zero-value entries
- OpdModel.php insertOpd(): exclude fee_type=3/zero-amount from running_opd_id lookup; anchor visit count to paid OPD start when isZeroValueRunning
- DoctorDocument.php update_doc_field(): wrap in try/catch, schema-safe payload via filterPayloadByExistingColumns, structured JSON errors
- DoctorDocument.php create_final(): configure mPDF with FreeSans/FreeSerif (GNU FreeFont), useOTL=0xFF, autoScriptToLang=true for Devanagari/Hindi rendering
- doc_letterhead_print.php: add body/p/td/th font-family freesans for PDF Unicode output