- Add OPD Validity (Days) field in Doctor add/edit forms\n- Save/update doctor_master.opd_valid_no_days from Doctor module\n- Use hospital_setting fallback keys when doctor validity is blank/zero\n- Apply fallback consistently in OPD showfee, print expiry, and running_opd lookup window\n- Supports hospital-wide defaults while preserving doctor-specific overrides
OpdModel.php:
- running_opd_id lookup now uses doctor's configured opd_valid_no_days
instead of hardcoded 4 days (resolveRunningLookupDate helper)
- Doctors with validity > 5 days now correctly link running OPD back
to the original paid OPD even on days 5..N of the window
Opd.php (buildOpdLetterPrintData):
- For running OPD entries (running_opd=1 or opd_fee_type=3), expiry
display now shows "OPD Start Date: [paid visit] | Valid Upto: [paid
visit + validity]" using old_opd record — mirrors Opd_print_1 legacy
behavior and prevents validity window from advancing with each visit