primitive chunk table in world snapshot instead of colliding long-keyed hashmap, bounded cache for tinted/composited mob and banner textures, vanilla dump with nested model json, village benchmark and perf test scenes

tools/VanillaModelDump.java

@@ -1,4 +1,3 @@
-import com.google.gson.Gson;
 import com.google.gson.GsonBuilder;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonObject;
@@ -31,7 +30,8 @@ import net.minecraft.world.entity.EntityType;
 
 /**
  * Dumps the vanilla Java entity models straight from an (unobfuscated, 26.x+) Minecraft CLIENT jar into
- * the CEM-template JSON layout PixelPics loads ({@code {"models": {name: {"model": "<jem json>"}}}}).
+ * the CEM-template JSON layout PixelPics loads ({@code {"models": {name: {"model": {<jem>}}}}}; the jem is a
+ * nested object, not the template set's embedded JSON string, so the plugin parses the file only once).
  *
  * <p>Unlike the third-party CEM template set (rest geometry only), every entity model is instantiated
  * through its real renderer and posed by its real {@code setupAnim} with a default (idle, adult, not
@@ -152,7 +152,7 @@ public class VanillaModelDump {
                 parts.add(part("root", rootDef, baked, 0, 0, 0));
                 jem.add("models", parts);
                 JsonObject entry = new JsonObject();
-                entry.addProperty("model", new Gson().toJson(jem));
+                entry.add("model", jem); // nested object, not a JSON string: parsed once at plugin start
                 out.putIfAbsent(name, entry);
             } catch (Throwable t) {
                 failed.add(name + " (layer: " + t + ")");
@@ -315,7 +315,7 @@ public class VanillaModelDump {
             JsonObject jem = dump(factory.apply(set.bakeLayer(loc)), state, name, failed);
             if (jem == null) return;
             JsonObject entry = new JsonObject();
-            entry.addProperty("model", new Gson().toJson(jem));
+            entry.add("model", jem);
             out.put(name, entry);
         } catch (Throwable t) {
             failed.add(name + " (" + t + ")");
@@ -368,7 +368,7 @@ public class VanillaModelDump {
                 String tex = textures.get(f);
                 if (tex != null) jem.addProperty("texture", tex);
                 JsonObject entry = new JsonObject();
-                entry.addProperty("model", new Gson().toJson(jem));
+                entry.add("model", jem);
                 out.put(name, entry);
             }
         }