adding Marker to parse effectively pdf

backend/src/main/java/com/aiteacher/config/MarkerConfig.java

@@ -0,0 +1,30 @@
+package com.aiteacher.config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.client.JdkClientHttpRequestFactory;
+import org.springframework.web.client.RestClient;
+
+import java.net.http.HttpClient;
+
+@Configuration
+public class MarkerConfig {
+
+    @Value("${app.marker.base-url:http://localhost:8000}")
+    private String markerBaseUrl;
+
+    @Bean
+    RestClient markerRestClient() {
+        // Use the JDK HTTP client with no timeout — Marker conversions can take several minutes.
+        HttpClient httpClient = HttpClient.newBuilder()
+                .build();
+        JdkClientHttpRequestFactory factory = new JdkClientHttpRequestFactory(httpClient);
+        // No read timeout set: JDK HTTP client defaults to no deadline.
+
+        return RestClient.builder()
+                .baseUrl(markerBaseUrl)
+                .requestFactory(factory)
+                .build();
+    }
+}