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>

app/RSpade/Core/Base/Main_Abstract.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * CODING CONVENTION:
+ * This file follows the coding convention where variable_names and function_names
+ * use snake_case (underscore_wherever_possible).
+ */
+
+namespace App\RSpade\Core\Base;
+
+use Illuminate\Http\Request;
+
+/**
+ * Main_Abstract - Base class for application-wide middleware-style hooks
+ * 
+ * Classes extending this abstract can define application-wide behaviors
+ * that execute at key points in the request lifecycle.
+ */
+abstract class Main_Abstract
+{
+    /**
+     * Initialize the Main class
+     * 
+     * Called once during application bootstrap
+     * 
+     * @return void
+     */
+    abstract public static function init();
+    
+    /**
+     * Pre-dispatch hook
+     * 
+     * Called before any route dispatch. If a non-null value is returned,
+     * dispatch is halted and that value is returned as the response.
+     * 
+     * @param Request $request The current request
+     * @param array $params Combined GET values and URL parameters
+     * @return mixed|null Return null to continue, or a response to halt dispatch
+     */
+    abstract public static function pre_dispatch(Request $request, array $params);
+    
+    /**
+     * Unhandled route hook
+     * 
+     * Called when no route matches the request
+     * 
+     * @param Request $request The current request
+     * @param array $params Combined GET values and URL parameters
+     * @return mixed|null Return null for default 404, or a response to handle
+     */
+    abstract public static function unhandled_route(Request $request, array $params);
+}