Merge pull request #269 from DevKor-github/codex/fix-firebase-initialization

[codex] Fix Firebase initialization lifecycle hook

Author: jjoonleo

ontime-back/src/main/java/devkor/ontime_back/config/FirebaseInitialization.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.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
@@ -31,6 +31,9 @@ public void initialize() {
 
             if (FirebaseApp.getApps().isEmpty()) {
                 FirebaseApp.initializeApp(options);
+                log.info("Firebase initialized successfully");
+            } else {
+                log.info("Firebase already initialized");
             }
         } catch (IOException e) {
             log.error("Failed to initialize Firebase", e);