feat(listings): implement Listings module with CRUD, media upload, and moderation

Full DDD/CQRS implementation for the Listings module (TEC-1423):
- Domain: Property, Listing, PropertyMedia entities with status machine
- Value Objects: Address, GeoPoint, Price with validation
- Events: ListingCreated, ListingApproved, ListingSold
- Commands: CreateListing, UpdateListingStatus, UploadMedia, ModerateListing
- Queries: GetListing, SearchListings, GetPendingModeration
- Infrastructure: Prisma repositories with PostGIS support, MinIO media storage
- Presentation: REST controller with JWT auth, role-based moderation
- 21 domain unit tests (all passing)

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/listings/listings.module.ts

@@ -0,0 +1,63 @@
+import { Module } from '@nestjs/common';
+import { CqrsModule } from '@nestjs/cqrs';
+import { MulterModule } from '@nestjs/platform-express';
+
+// Domain
+import { PROPERTY_REPOSITORY } from './domain/repositories/property.repository';
+import { LISTING_REPOSITORY } from './domain/repositories/listing.repository';
+
+// Infrastructure
+import { PrismaPropertyRepository } from './infrastructure/repositories/prisma-property.repository';
+import { PrismaListingRepository } from './infrastructure/repositories/prisma-listing.repository';
+import { MEDIA_STORAGE_SERVICE, MinioMediaStorageService } from './infrastructure/services/media-storage.service';
+
+// Application — Commands
+import { CreateListingHandler } from './application/commands/create-listing/create-listing.handler';
+import { UpdateListingStatusHandler } from './application/commands/update-listing-status/update-listing-status.handler';
+import { UploadMediaHandler } from './application/commands/upload-media/upload-media.handler';
+import { ModerateListingHandler } from './application/commands/moderate-listing/moderate-listing.handler';
+
+// Application — Queries
+import { GetListingHandler } from './application/queries/get-listing/get-listing.handler';
+import { SearchListingsHandler } from './application/queries/search-listings/search-listings.handler';
+import { GetPendingModerationHandler } from './application/queries/get-pending-moderation/get-pending-moderation.handler';
+
+// Presentation
+import { ListingsController } from './presentation/controllers/listings.controller';
+
+const CommandHandlers = [
+  CreateListingHandler,
+  UpdateListingStatusHandler,
+  UploadMediaHandler,
+  ModerateListingHandler,
+];
+
+const QueryHandlers = [
+  GetListingHandler,
+  SearchListingsHandler,
+  GetPendingModerationHandler,
+];
+
+@Module({
+  imports: [
+    CqrsModule,
+    MulterModule.register({
+      limits: { fileSize: 10 * 1024 * 1024 }, // 10 MB
+    }),
+  ],
+  controllers: [ListingsController],
+  providers: [
+    // Repositories
+    { provide: PROPERTY_REPOSITORY, useClass: PrismaPropertyRepository },
+    { provide: LISTING_REPOSITORY, useClass: PrismaListingRepository },
+
+    // Services
+    { provide: MEDIA_STORAGE_SERVICE, useClass: MinioMediaStorageService },
+
+    // CQRS
+    ...CommandHandlers,
+    ...QueryHandlers,
+  ],
+  exports: [LISTING_REPOSITORY, PROPERTY_REPOSITORY],
+})
+export class ListingsModule {}