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/vm-browserify/example/run/entry.js

@@ -0,0 +1,6 @@
+var vm = require('vm');
+
+window.addEventListener('load', function () {
+    var res = vm.runInNewContext('a + 5', { a : 100 });
+    document.querySelector('#res').textContent = res;
+});