Add Mellat e-payment, videos/instructions CMS, and legacy domain lookup.

Store gateway credentials per business, initiate/verify Mellat at checkout, and resolve old CMS ids from domains in the migrate modal.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/comments/comments.service.ts

@@ -203,6 +203,38 @@ export class CommentsService {
       return;
     }
 
+    if (entityType === MediaEntityType.video) {
+      const video = await this.prisma.videos.findFirst({
+        where: {
+          id: entityId,
+          business_id: businessId,
+          status: ContentStatus.published,
+        },
+        select: { id: true },
+      });
+
+      if (!video) {
+        throw new NotFoundException('Video not found');
+      }
+      return;
+    }
+
+    if (entityType === MediaEntityType.instruction) {
+      const instruction = await this.prisma.instructions.findFirst({
+        where: {
+          id: entityId,
+          business_id: businessId,
+          status: ContentStatus.published,
+        },
+        select: { id: true },
+      });
+
+      if (!instruction) {
+        throw new NotFoundException('Instruction not found');
+      }
+      return;
+    }
+
     const rows = await this.prisma.$queryRaw<{ id: bigint }[]>`
       SELECT id FROM portfolios
       WHERE id = ${entityId}