добавила api (контроллеры) в папку core

backend/build.gradle

@@ -23,6 +23,15 @@ dependencies {
 	implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
 	implementation 'com.h2database:h2:2.2.224'
 
+	implementation 'org.springframework.boot:spring-boot-devtools'
+    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
+    implementation 'nz.net.ultraq.thymeleaf:thymeleaf-layout-dialect:3.3.0'
+    runtimeOnly 'org.webjars.npm:bootstrap:5.3.3'
+    runtimeOnly 'org.webjars.npm:bootstrap-icons:1.11.3'
+
+    implementation 'org.springframework.boot:spring-boot-starter-security'
+    implementation 'org.thymeleaf.extras:thymeleaf-extras-springsecurity6'
+
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
 }
 

backend/src/main/java/com/example/backend/core/api/GlobalController.java

@@ -0,0 +1,15 @@
+package com.example.backend.core.api;
+
+import org.springframework.web.bind.annotation.ControllerAdvice;
+import org.springframework.web.bind.annotation.ModelAttribute;
+
+import jakarta.servlet.http.HttpServletRequest;
+
+@ControllerAdvice
+public class GlobalController {
+
+    @ModelAttribute("servletPath")
+    String getRequestServletPath(HttpServletRequest request) {
+        return request.getServletPath();
+    }
+}

backend/src/main/java/com/example/backend/core/api/PageAttributesMapper.java

@@ -0,0 +1,18 @@
+package com.example.backend.core.api;
+
+import java.util.Map;
+import java.util.function.Function;
+
+import org.springframework.data.domain.Page;
+
+public class PageAttributesMapper {
+    private PageAttributesMapper() {
+    }
+
+    public static <E, D> Map<String, Object> toAttributes(Page<E> page, Function<E, D> mapper) {
+        return Map.of(
+                "items", page.getContent().stream().map(mapper::apply).toList(),
+                "currentPage", page.getNumber(),
+                "totalPages", page.getTotalPages());
+    }
+}