[FIX] Swagger Token 입력 문제 수정

Author: hyunbin1

src/main/java/com/example/ai_tutor/global/config/SwaggerConfig.java

@@ -0,0 +1,31 @@
+package com.example.ai_tutor.global.config;
+
+import io.swagger.v3.oas.models.OpenAPI;
+import io.swagger.v3.oas.models.Components;
+import io.swagger.v3.oas.models.info.Info;
+import io.swagger.v3.oas.models.security.SecurityRequirement;
+import io.swagger.v3.oas.models.security.SecurityScheme;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class SwaggerConfig {
+
+    @Bean
+    public OpenAPI openAPI() {
+        return new OpenAPI()
+                .components(new Components()
+                        .addSecuritySchemes("BearerAuth",
+                                new SecurityScheme()
+                                        .type(SecurityScheme.Type.HTTP)
+                                        .scheme("bearer")
+                                        .bearerFormat("JWT")
+                        ))
+                .addSecurityItem(new SecurityRequirement().addList("BearerAuth"))
+                .info(new Info()
+                        .title("AI Tutor API")
+                        .version("v1.0.0")
+                        .description("AI Tutor 백엔드 API 문서입니다.")
+                );
+    }
+}