Ship legacy migrate APIs, portfolio/blog old-id schema, and admin migrate/purge flows.

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

src/business-profile/business-profile.service.ts

@@ -11,6 +11,7 @@ import sharp from 'sharp';
 import { AuthUser } from '../auth/auth.types';
 import { PermissionsService } from '../auth/permissions.service';
 import { PrismaService } from '../prisma/prisma.service';
+import { businessBrandFaviconKey } from '../storage/storage-keys';
 import { StorageService } from '../storage/storage.service';
 import { UpdateBusinessProfileDto } from './dto/update-business-profile.dto';
 import {
@@ -251,7 +252,7 @@ export class BusinessProfileService {
   ) {
     const business = await this.prisma.business.findUnique({
       where: { id: businessId },
-      select: { slug: true },
+      select: { id: true },
     });
     if (!business) return;
 
@@ -302,7 +303,7 @@ export class BusinessProfileService {
       .toBuffer();
 
     const fileName = `${randomUUID()}-favicon.png`;
-    const storageKey = `businesses/${business.slug}/${businessId}/media/${fileName}`;
+    const storageKey = businessBrandFaviconKey(businessId, fileName);
     const stored = await this.storage.upload({
       key: storageKey,
       body: faviconBuffer,