修复编译错误：将javax.annotation.PostConstruct改为jakarta.annotation.PostConstruct，并添加依赖

Author: zyh616598128

pom.xml

@@ -52,6 +52,13 @@
             <version>0.18.2</version>
         </dependency>
 
+        <!-- Jakarta Annotations (for @PostConstruct in Spring Boot 3) -->
+        <dependency>
+            <groupId>jakarta.annotation</groupId>
+            <artifactId>jakarta.annotation-api</artifactId>
+            <version>2.1.1</version>
+        </dependency>
+        
         <!-- Testing -->
         <dependency>
             <groupId>org.springframework.boot</groupId>

src/main/java/com/intellidev/ai/service/AIService.java

@@ -7,7 +7,7 @@
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Service;
 
-import javax.annotation.PostConstruct;
+import jakarta.annotation.PostConstruct;
 import java.time.Duration;
 import java.util.ArrayList;
 import java.util.List;