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/postcss-loader/dist/Warning.js

@@ -0,0 +1,36 @@
+"use strict";
+
+/**
+ * **PostCSS Plugin Warning**
+ *
+ * Loader wrapper for postcss plugin warnings (`root.messages`)
+ *
+ * @class Warning
+ * @extends Error
+ *
+ * @param {Object} warning PostCSS Warning
+ */
+class Warning extends Error {
+  constructor(warning) {
+    super(warning);
+    const {
+      text,
+      line,
+      column,
+      plugin
+    } = warning;
+    this.name = "Warning";
+    this.message = `${this.name}\n\n`;
+
+    if (typeof line !== "undefined") {
+      this.message += `(${line}:${column}) `;
+    }
+
+    this.message += plugin ? `${plugin}: ` : "";
+    this.message += `${text}`;
+    this.stack = false;
+  }
+
+}
+
+module.exports = Warning;