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/pbkdf2/lib/default-encoding.js

@@ -0,0 +1,14 @@
+'use strict';
+
+var defaultEncoding;
+/* istanbul ignore next */
+if (global.process && global.process.browser) {
+	defaultEncoding = 'utf-8';
+} else if (global.process && global.process.version) {
+	var pVersionMajor = parseInt(process.version.split('.')[0].slice(1), 10);
+
+	defaultEncoding = pVersionMajor >= 6 ? 'utf-8' : 'binary';
+} else {
+	defaultEncoding = 'utf-8';
+}
+module.exports = defaultEncoding;