Fix bin/publish: copy docs.dist from project root

Fix bin/publish: use correct .env path for rspade_system
Fix bin/publish script: prevent grep exit code 1 from terminating script

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

node_modules/webpack-dev-server/client/utils/sendMessage.js

@@ -0,0 +1,16 @@
+/* global __resourceQuery WorkerGlobalScope */
+
+// Send messages to the outside, so plugins can consume it.
+/**
+ * @param {string} type
+ * @param {any} [data]
+ */
+function sendMsg(type, data) {
+  if (typeof self !== "undefined" && (typeof WorkerGlobalScope === "undefined" || !(self instanceof WorkerGlobalScope))) {
+    self.postMessage({
+      type: "webpack".concat(type),
+      data: data
+    }, "*");
+  }
+}
+export default sendMsg;