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/public-encrypt/withPublic.js

@@ -0,0 +1,12 @@
+var BN = require('bn.js')
+var Buffer = require('safe-buffer').Buffer
+
+function withPublic (paddedMsg, key) {
+  return Buffer.from(paddedMsg
+    .toRed(BN.mont(key.modulus))
+    .redPow(new BN(key.publicExponent))
+    .fromRed()
+    .toArray())
+}
+
+module.exports = withPublic