Add workshops CMS API with schedule, registrations, and public storefront routes.

Includes SQL migrations, Prisma models, dashboard CRUD, registration status workflow, and website OpenAPI updates for workshop listing and signup.

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

src/videos/videos.service.ts

@@ -128,7 +128,7 @@ export class VideosService {
     }
 
     const authorId = dto.authorId ? BigInt(dto.authorId) : actor.id;
-    await this.assertAuthorBelongsToBusiness(businessId, authorId);
+    await this.assertAuthorBelongsToBusiness(businessId, authorId, actor);
 
     if (dto.categoryId) {
       await this.assertCategoryBelongsToBusiness(
@@ -235,7 +235,7 @@ export class VideosService {
         authorId = null;
       } else {
         authorId = BigInt(dto.authorId);
-        await this.assertAuthorBelongsToBusiness(businessId, authorId);
+        await this.assertAuthorBelongsToBusiness(businessId, authorId, actor);
       }
     }
 
@@ -767,7 +767,12 @@ export class VideosService {
   private async assertAuthorBelongsToBusiness(
     businessId: bigint,
     authorId: bigint,
+    actor: AuthUser,
   ) {
+    if (await this.permissions.isSuperAdmin(actor.id)) {
+      return;
+    }
+
     const member = await this.prisma.businessUser.findFirst({
       where: { businessId, userId: authorId },
     });