docs(api): document GET /api/v1/my/payments

Add the user payments-list endpoint to payment.md: permission, query
params (page/limit/status), and the paginated response shape.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/api/payment.md

@@ -29,6 +29,49 @@
 
 ---
 
+## GET `/api/v1/my/payments`
+
+List the **authenticated user's own** payments (derived from the token — there is no userId in the URL). Used by the public dashboard's transactions tab.
+
+**Permission:** `IS_AUTHENTICATED_FULLY`
+
+### Query Parameters
+| Param | Type | Default | Description |
+|-------|------|---------|-------------|
+| `page` | integer | 1 | Page number |
+| `limit` | integer | 20 | Items per page (max 100) |
+| `status` | string | — | Optional filter: `pending` / `success` / `failed` / `cancelled` / `refunded` |
+
+### Response `200` (paginated)
+```json
+{
+  "success": true,
+  "data": [
+    {
+      "uuid": "pay-uuid-...",
+      "order_id": "ORD-84FB82E12A4A45CE",
+      "amount_rials": 590000,
+      "status": "success",
+      "gateway": "mellat",
+      "type": "appointment",
+      "reference_id": "...",
+      "appointment_uuid": "appt-uuid-...",
+      "created_at": 1781521834
+    }
+  ],
+  "meta": { "totalRecords": 1, "totalPages": 1, "currentPage": 1 }
+}
+```
+
+> Items at `data` (flat array), total at `meta.totalRecords`. Ordered by `created_at` DESC.
+
+### Errors
+| Code | HTTP | Description |
+|------|------|-------------|
+| `ERR_AUTH_001` | 401 | Missing token |
+
+---
+
 ## POST `/api/v1/payment/appointment`
 
 Initiate payment for an appointment. Returns a redirect URL to the payment gateway.