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

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

node_modules/@babel/runtime/helpers/regeneratorAsync.js

@@ -0,0 +1,8 @@
+var regeneratorAsyncGen = require("./regeneratorAsyncGen.js");
+function _regeneratorAsync(n, e, r, t, o) {
+  var a = regeneratorAsyncGen(n, e, r, t, o);
+  return a.next().then(function (n) {
+    return n.done ? n.value : a.next();
+  });
+}
+module.exports = _regeneratorAsync, module.exports.__esModule = true, module.exports["default"] = module.exports;