feat: agent state endpoint + search module

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/search/search.module.ts

@@ -0,0 +1,9 @@
+import { Module } from '@nestjs/common';
+import { SearchController } from './search.controller';
+import { PlatformModule } from '../platform/platform.module';
+
+@Module({
+    imports: [PlatformModule],
+    controllers: [SearchController],
+})
+export class SearchModule {}