Database
- database/20260725_merge_payments_with_cheques.sql
- database/verify_payment_cheque_merge.sql

New integration support
- payments/_payment_cheque_lib.php
- payments/cheque_leaves_ajax.php
- payments/cheque_status_action.php

Core updated workflow
- payments/select_invoices.php
- payments/add.php
- payments/save_payment.php
- payments/list.php
- payments/view.php

Supporting updated pages
- payments/pending_cheques.php
- payments/calendar.php
- payments/fetch_payments.php
- payments/payment_success.php

Legacy redirects / safety shims
- payments/bulk_clear.php
- payments/cheque_books.php
- payments/cheque_series_register.php
- payments/cheque_calendar.php
- payments/pdc_register.php
- payments/select_cheque_leaf.php
- payments/select_cheque_leaf_modal.php
- payments/list1.php
- payments/view_payment.php
- payments/pending.php
