final comment sweep: section separators, signature-only javadocs and history notes removed, stale comments corrected (sign/contents model lookup, inverted entity cubes, item-bounds use, datapack folder search, biome tint argb, water-only overlay faces, beacon first section, mushroom-cow instanceof example, legacy skin arm copy, elytra and pack-detection notes in the scripts, pptest scene descriptions), comments only

tools/Harness.java

@@ -71,9 +71,8 @@ final class Harness {
     }
 
     /**
-     * Server-free BlockData stand-in: material + blockstate string are all the model registry needs. (Each proxy
-     * kind gets its own handler class: a shared generic one made the hot getMaterial/hashCode calls megamorphic and
-     * EntityBenchmark measurably slower.)
+     * Server-free BlockData stand-in: material + blockstate string are all the model registry needs. Each proxy kind
+     * has its own handler: a shared generic one made the hot getMaterial/hashCode calls megamorphic (slower benchmark).
      */
     static BlockData block(Material m, String state) {
         String s = "minecraft:" + m.getKey().getKey() + (state == null ? "" : "[" + state + "]");