Add JSON files for Payment Gateway Interface and API documentation updates

- Created a new JSON file for the PaymentGatewayInterface.php, detailing its methods and return types.
- Added a JSON file for payment.md, documenting various API endpoints and their parameters, responses, and errors.
- Introduced a JSON file for fix-admin-modal-and-calendar.md, outlining issues and solutions related to admin modal and calendar functionalities.

assets/admin/pages/DoctorDetailPage.tsx

@@ -1104,7 +1104,7 @@ function SessionEditor({ session, onChange, onRemove, addresses }: {
     <div style={{ border: '1px solid var(--border)', borderRadius: 'var(--r)', background: 'var(--surface)', overflow: 'hidden' }}>
 
       {/* Time inputs */}
-      <div style={{ padding: '14px 16px 12px', display: 'grid', gridTemplateColumns: '1fr 1fr auto', gap: 12, alignItems: 'end' }}>
+      <div style={{ padding: '14px 16px 12px', display: 'grid', gridTemplateColumns: 'repeat(auto-fit, minmax(140px, 1fr))', gap: 12, alignItems: 'end' }}>
         <div>
           <div style={{ fontSize: 12, color: 'var(--text-2)', marginBottom: 5 }}>از ساعت</div>
           <TimeSelect value={session.start_time} onChange={v => upd('start_time', v)} />