Add native Crystal exploration port and reference tooling

scripts/check-release.mjs

@@ -0,0 +1,30 @@
+import { readdirSync, readFileSync, statSync } from "node:fs";
+import { join } from "node:path";
+
+let files = 0,
+  size = 0;
+function inspect(directory) {
+  for (const name of readdirSync(directory)) {
+    const path = join(directory, name);
+    if (statSync(path).isDirectory()) {
+      inspect(path);
+      continue;
+    }
+    if (!/\.(html|js|css|svg)$/.test(name))
+      throw new Error(`Unexpected production asset: ${path}`);
+    if (/reference|vendor|binjgb/i.test(path))
+      throw new Error(`Reference tool in production: ${path}`);
+    const bytes = readFileSync(path),
+      text = bytes.toString("utf8");
+    if (/Binjgb|_emulator_|binjgb\.wasm|\.reference\/pokecrystal/.test(text))
+      throw new Error(`Reference dependency in production: ${path}`);
+    if (/data:(image|audio|application\/octet-stream)[^,]*;base64,/i.test(text))
+      throw new Error(`Embedded binary asset in production: ${path}`);
+    files++;
+    size += bytes.length;
+  }
+}
+inspect("dist");
+console.log(
+  `Native release verified: ${files} HTML/JS/CSS/SVG files, ${size} bytes; no emulator, ROM, extracted binary assets or reference checkout.`,
+);