Sync Composite to Java 25: H6 file labels, fix console output typo, README mapping

02-structural/composite/FileSystemItem.java

@@ -1,12 +1,10 @@
 package composite;
-
 /**
- * Component interface — the common contract for BOTH files (leaves)
- * and directories (composites). Clients work through this interface
- * and never need to know which they're dealing with.
+ * Component — the common interface for both files (leaves) and directories (composites).
+ * Clients work through this interface and never need to know which type they're dealing with.
  */
 public interface FileSystemItem {
     String getName();
-    long getSize();          // total size in bytes (recursive for directories)
-    void print(String indent); // display the tree
+    long getSize();           // total size in bytes — recursive for directories
+    void print(String indent); // display the tree at the given indentation level
 }