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/laravel-mix/src/components/Stylus.js

@@ -0,0 +1,28 @@
+let Preprocessor = require('./Preprocessor');
+
+class Stylus extends Preprocessor {
+    /**
+     * Required dependencies for the component.
+     */
+    dependencies() {
+        return ['stylus', 'stylus-loader'];
+    }
+
+    /**
+     * Register the component.
+     *
+     * @param {any} src
+     * @param {string} output
+     * @param {Record<string, any>} pluginOptions
+     * @param {import('postcss').AcceptedPlugin[]}  postCssPlugins
+     */
+    register(src, output, pluginOptions = {}, postCssPlugins = []) {
+        return this.preprocess('stylus', src, output, pluginOptions, postCssPlugins);
+    }
+
+    chunkRegex() {
+        return /\.(css|styl(us)?)$/;
+    }
+}
+
+module.exports = Stylus;