added swagger

pom.xml

@@ -99,6 +99,13 @@
       <artifactId>spring-boot-starter-security</artifactId>
     </dependency>
 
+    <!-- OpenAPI / Swagger (public API docs only; admin excluded) -->
+    <dependency>
+      <groupId>org.springdoc</groupId>
+      <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
+      <version>2.5.0</version>
+    </dependency>
+
     <!-- JWT -->
     <dependency>
       <groupId>io.jsonwebtoken</groupId>