Add Minecraft 26.x support and version Java artifacts

scripts/reprocess.mjs

@@ -57,7 +57,8 @@ if (
   throw new Error(
     "This draft contains accepted contributions. Upload a new capture instead of reprocessing mixed media.",
   );
-if (dataset.source === "plugin") await prepareAssets();
+if (dataset.source === "plugin")
+  await prepareAssets(input.manifest.minecraftVersion);
 
 // This maintenance command runs with the worker stopped. Compare-and-set
 // guards reject intervening publication, ownership of a job, or another repair.