feat: implement correction and original send functionality for Nama provider

- Added new DTOs for correction requests and responses in `nama-provider.dto.ts`.
- Updated `nama-provider.adapter.ts` to include `originalSend` and `correctionSend` methods.
- Enhanced `nama-provider.util.ts` with mapping functions for correction requests.
- Created operational guidelines for agents in `AGENT.md`.
- Updated Prisma migrations to support new invoice types and relationships.
- Introduced new service and DTO for creating sales invoices in `sale-invoice-create.service.ts` and `sale-invoice-create.dto.ts`.
- Added utility for handling Prisma errors in `prisma-error.util.ts`.

prisma/migrations/20260505133251_update_attempt/migration.sql

@@ -0,0 +1,43 @@
+/*
+  Warnings:
+
+  - You are about to drop the column `error_message` on the `sale_invoice_tsp_attempts` table. All the data in the column will be lost.
+  - You are about to drop the column `tax_id` on the `sale_invoice_tsp_attempts` table. All the data in the column will be lost.
+  - A unique constraint covering the columns `[tax_id]` on the table `sales_invoices` will be added. If there are existing duplicate values, this will fail.
+  - Added the required column `message` to the `sale_invoice_tsp_attempts` table without a default value. This is not possible if the table is not empty.
+
+*/
+-- 1) Add new columns in a backward-compatible way
+ALTER TABLE `sale_invoice_tsp_attempts`
+    ADD COLUMN `message` TEXT NULL;
+
+ALTER TABLE `sales_invoices`
+    ADD COLUMN `tax_id` VARCHAR(32) NULL;
+
+-- 2) Backfill message from old error_message, fallback to a default text
+UPDATE `sale_invoice_tsp_attempts`
+SET `message` = COALESCE(`error_message`, 'وضعیت ارسال فاکتور ثبت شد.')
+WHERE `message` IS NULL;
+
+-- 3) Backfill tax_id to sales_invoices from attempts
+UPDATE `sales_invoices` si
+JOIN `sale_invoice_tsp_attempts` sita ON sita.`invoice_id` = si.`id`
+SET si.`tax_id` = sita.`tax_id`
+WHERE sita.`tax_id` IS NOT NULL
+  AND si.`tax_id` IS NULL;
+
+-- 4) Enforce required constraint after backfill
+ALTER TABLE `sale_invoice_tsp_attempts`
+    MODIFY `message` TEXT NOT NULL;
+
+-- 5) Remove old indexes/columns after successful data move
+DROP INDEX `sale_invoice_tsp_attempts_tax_id_idx` ON `sale_invoice_tsp_attempts`;
+DROP INDEX `sale_invoice_tsp_attempts_tax_id_key` ON `sale_invoice_tsp_attempts`;
+
+ALTER TABLE `sale_invoice_tsp_attempts`
+    DROP COLUMN `error_message`,
+    DROP COLUMN `tax_id`;
+
+-- 6) Add indexes on new tax_id location
+CREATE UNIQUE INDEX `sales_invoices_tax_id_key` ON `sales_invoices`(`tax_id`);
+CREATE INDEX `sales_invoices_tax_id_idx` ON `sales_invoices`(`tax_id`);