feat(api): add swagger docs route

backend/routes/docs.js

@@ -0,0 +1,42 @@
+import { Router } from 'express';
+import swaggerJsdoc from 'swagger-jsdoc';
+import swaggerUi from 'swagger-ui-express';
+
+const router = Router();
+
+const options = {
+  definition: {
+    openapi: '3.0.0',
+    info: {
+      title: 'CV API',
+      version: '1.0.0',
+      description: 'API for CV/Resume management',
+    },
+    servers: [
+      { url: '/api', description: 'API server' }
+    ],
+    components: {
+      securitySchemes: {
+        bearerAuth: {
+          type: 'http',
+          scheme: 'bearer',
+        },
+      },
+    },
+  },
+  apis: ['./routes/*.js'],
+};
+
+const specs = swaggerJsdoc(options);
+
+router.use('/docs', swaggerUi.serve, swaggerUi.setup(specs, {
+  customCss: '.swagger-ui .topbar { display: none }',
+  customSiteTitle: 'CV API Documentation'
+}));
+
+router.get('/docs.json', (req, res) => {
+  res.setHeader('Content-Type', 'application/json');
+  res.send(specs);
+});
+
+export default router;