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/yargs/build/lib/yerror.js

@@ -0,0 +1,9 @@
+export class YError extends Error {
+    constructor(msg) {
+        super(msg || 'yargs error');
+        this.name = 'YError';
+        if (Error.captureStackTrace) {
+            Error.captureStackTrace(this, YError);
+        }
+    }
+}