Build: ship Matrix crypto WASM pkg

scripts/copy-matrix-crypto-wasm-pkg.mjs

@@ -0,0 +1,34 @@
+import fs from "node:fs";
+import path from "node:path";
+import { pathToFileURL } from "node:url";
+import { removePathIfExists } from "./runtime-postbuild-shared.mjs";
+
+/**
+ * @param {{
+ *   cwd?: string;
+ *   repoRoot?: string;
+ * }} [params]
+ */
+export function copyMatrixCryptoWasmPkg(params = {}) {
+  const repoRoot = params.cwd ?? params.repoRoot ?? process.cwd();
+  const sourcePkgDir = path.join(
+    repoRoot,
+    "node_modules",
+    "@matrix-org",
+    "matrix-sdk-crypto-wasm",
+    "pkg",
+  );
+  const targetPkgDir = path.join(repoRoot, "dist", "pkg");
+
+  removePathIfExists(targetPkgDir);
+  if (!fs.existsSync(sourcePkgDir)) {
+    return;
+  }
+
+  fs.mkdirSync(path.dirname(targetPkgDir), { recursive: true });
+  fs.cpSync(sourcePkgDir, targetPkgDir, { force: true, recursive: true });
+}
+
+if (import.meta.url === pathToFileURL(process.argv[1] ?? "").href) {
+  copyMatrixCryptoWasmPkg();
+}

scripts/release-check.ts

@@ -28,6 +28,7 @@ const requiredPathGroups = [
   "dist/build-info.json",
   "dist/channel-catalog.json",
   "dist/control-ui/index.html",
+  "dist/pkg/matrix_sdk_crypto_wasm_bg.wasm",
 ];
 const forbiddenPrefixes = ["dist-runtime/", "dist/OpenClaw.app/"];
 // 2026.3.12 ballooned to ~213.6 MiB unpacked and correlated with low-memory

scripts/runtime-postbuild.mjs

@@ -1,5 +1,6 @@
 import { pathToFileURL } from "node:url";
 import { copyBundledPluginMetadata } from "./copy-bundled-plugin-metadata.mjs";
+import { copyMatrixCryptoWasmPkg } from "./copy-matrix-crypto-wasm-pkg.mjs";
 import { copyPluginSdkRootAlias } from "./copy-plugin-sdk-root-alias.mjs";
 import { stageBundledPluginRuntimeDeps } from "./stage-bundled-plugin-runtime-deps.mjs";
 import { stageBundledPluginRuntime } from "./stage-bundled-plugin-runtime.mjs";
@@ -8,6 +9,7 @@ import { writeOfficialChannelCatalog } from "./write-official-channel-catalog.mj
 export function runRuntimePostBuild(params = {}) {
   copyPluginSdkRootAlias(params);
   copyBundledPluginMetadata(params);
+  copyMatrixCryptoWasmPkg(params);
   writeOfficialChannelCatalog(params);
   stageBundledPluginRuntimeDeps(params);
   stageBundledPluginRuntime(params);