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/node-libs-browser/mock/buffer.js

@@ -0,0 +1,10 @@
+function Buffer() {
+	throw new Error("Buffer is not included.");
+}
+Buffer.isBuffer = function() {
+  return false;
+};
+
+exports.INSPECT_MAX_BYTES = 50;
+exports.SlowBuffer = Buffer;
+exports.Buffer = Buffer;