fix: use main method instead of obejct

src/main/scala/io/github/tassiLuca/gears/posts/UsePostsApp.scala

@@ -3,19 +3,20 @@ package io.github.tassiLuca.gears.posts
 import gears.async.{Async, Future}
 import gears.async.default.given
 
-object UsePostsApp extends App:
+/* TODO WARNING: USING AN OBJECT WHICH EXTENDS `App` CAUSES STARVATION!
+ * THE WORKER THREAD GETS STUCK WAITING FOR THE RELEASE OF THE MONITOR LOCK
+ *    waiting on the Class initialization monitor for io.github.tassiLuca.gears.posts.UsePostsApp$
+ * TO BE INVESTIGATED! */
+@main def usePostsApp(): Unit =
   val app = BlogPostsApp
   Async.blocking:
-    val f = Future:
-      println("POST 1")
+    val f1 = Future:
+      println(s"POST 1 carried by ${Thread.currentThread()}")
       app.postsService.create("ltassi@gmail.com", "A hello world post", "Hello World!")
-      // println(app.postsService.get("A hello world post"))
-//    val f2 = Future:
-//      println("POST 2")
-//      app.postsService.create("ltassi@gmail.com", "An another post", "Hello World 2!")
-//      println(app.postsService.get("An another post"))
-//    f1.await
-//    f2.await
-    println("End of the world...")
-    f.await
-    println("Ok")
+      println(app.postsService.get("A hello world post"))
+    val f2 = Future:
+      println(s"POST 2 carried by ${Thread.currentThread()}")
+      app.postsService.create("ltassi@gmail.com", "An another post", "Hello World 2!")
+      println(app.postsService.get("An another post"))
+    f1.await
+    f2.await