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/instructions/instructions.service.ts

@@ -128,7 +128,7 @@ export class InstructionsService {
     }
 
     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(
@@ -248,7 +248,7 @@ export class InstructionsService {
         authorId = null;
       } else {
         authorId = BigInt(dto.authorId);
-        await this.assertAuthorBelongsToBusiness(businessId, authorId);
+        await this.assertAuthorBelongsToBusiness(businessId, authorId, actor);
       }
     }
 
@@ -785,7 +785,12 @@ export class InstructionsService {
   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 },
     });