Implement main game as a mod

client/workers/chunk_messages.ts

@@ -1,5 +1,6 @@
 import type { BlockRegistry } from "$/common/everything_registry.ts";
 import type { SpriteRegion } from "$/common/constants.ts";
+import type { OreJson } from "$/common/mod_data.ts";
 
 // messages between the main thread and the chunk workers
 
@@ -11,6 +12,9 @@ export type ToChunkWorker =
 		block_ids: Record<string, number>;
 		textures_info: Record<string, SpriteRegion>;
 		image: { width: number; height: number };
+		// mods' worldgen scripts and ores, so generation matches the server
+		worldgen_scripts: { mod: string; url: string }[];
+		ores: OreJson[];
 	}
 	| { type: "generate"; chunk_x: number; chunk_z: number; seed: string }
 	| { type: "mesh"; chunk_x: number; chunk_z: number; version: number; padded_chunk: Uint32Array };