feat(search): implement Search module with Typesense full-text & geo search

- TypesenseClient service with configurable connection
- Collection schema for listings with facets, geo-point, and Vietnamese text
- ListingIndexer service with PostGIS coordinate extraction for geo search
- CQRS commands: SyncListing, ReindexAll (batch with pagination)
- CQRS queries: SearchProperties (filters, sorting), GeoSearch (radius)
- Event handlers for listing.approved/updated/deactivated auto-sync
- REST endpoints: GET /search, GET /search/geo, POST /search/reindex (admin)
- DTOs with class-validator validation and pagination

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

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

@@ -0,0 +1,63 @@
+import { Module, type OnModuleInit } from '@nestjs/common';
+import { CqrsModule } from '@nestjs/cqrs';
+
+// Domain
+import { SEARCH_REPOSITORY } from './domain/repositories/search.repository';
+
+// Infrastructure
+import { TypesenseClientService } from './infrastructure/services/typesense-client.service';
+import { TypesenseSearchRepository } from './infrastructure/services/typesense-search.repository';
+import { ListingIndexerService } from './infrastructure/services/listing-indexer.service';
+import { ListingApprovedEventHandler } from './infrastructure/event-handlers/listing-approved.handler';
+
+// Application
+import { SyncListingHandler } from './application/commands/sync-listing/sync-listing.handler';
+import { ReindexAllHandler } from './application/commands/reindex-all/reindex-all.handler';
+import { SearchPropertiesHandler } from './application/queries/search-properties/search-properties.handler';
+import { GeoSearchHandler } from './application/queries/geo-search/geo-search.handler';
+
+// Presentation
+import { SearchController } from './presentation/controllers/search.controller';
+
+import { LoggerService } from '@modules/shared/infrastructure/logger.service';
+
+const CommandHandlers = [SyncListingHandler, ReindexAllHandler];
+const QueryHandlers = [SearchPropertiesHandler, GeoSearchHandler];
+
+@Module({
+  imports: [CqrsModule],
+  controllers: [SearchController],
+  providers: [
+    // Infrastructure
+    TypesenseClientService,
+    { provide: SEARCH_REPOSITORY, useClass: TypesenseSearchRepository },
+    ListingIndexerService,
+
+    // Event handlers
+    ListingApprovedEventHandler,
+
+    // CQRS
+    ...CommandHandlers,
+    ...QueryHandlers,
+  ],
+  exports: [ListingIndexerService, SEARCH_REPOSITORY],
+})
+export class SearchModule implements OnModuleInit {
+  constructor(
+    private readonly typesenseClient: TypesenseClientService,
+    private readonly searchRepo: TypesenseSearchRepository,
+    private readonly logger: LoggerService,
+  ) {}
+
+  async onModuleInit(): Promise<void> {
+    try {
+      await this.searchRepo.ensureCollection();
+      this.logger.log('Search module initialized — Typesense collection ready', 'SearchModule');
+    } catch (err) {
+      this.logger.error(
+        `Failed to initialize Typesense collection: ${err instanceof Error ? err.message : String(err)}`,
+        'SearchModule',
+      );
+    }
+  }
+}