fase(21): openapi documentation with scalar

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/api/server.ts

@@ -15,6 +15,7 @@ import { createRequestIdMiddleware } from './middleware/requestId';
 import { notFoundMiddleware } from './middleware/notFound';
 import { globalErrorHandler } from './middleware/errorHandler';
 import { createRouter } from './router';
+import { createApiDocsRouter } from './openapi';
 import { CrawlingControllerDeps } from '../modules/crawling/infrastructure/http/CrawlingController';
 import { FindingsControllerDeps } from '../modules/findings/infrastructure/http/FindingsController';
 import { FuzzingControllerDeps } from '../modules/fuzzing/infrastructure/http/FuzzingController';
@@ -93,6 +94,9 @@ export function createServer(deps: ServerDependencies): Express {
   // 7. Module routes
   app.use('/api', createRouter(deps));
 
+  // 7b. API documentation (no auth required)
+  app.use('/api-docs', createApiDocsRouter());
+
   // 8. 404 handler
   app.use(notFoundMiddleware);