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>

vendor/filp/whoops/src/Whoops/Handler/HandlerInterface.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Handler;
+
+use Whoops\Inspector\InspectorInterface;
+use Whoops\RunInterface;
+
+interface HandlerInterface
+{
+    /**
+     * @return int|null A handler may return nothing, or a Handler::HANDLE_* constant
+     */
+    public function handle();
+
+    /**
+     * @param  RunInterface  $run
+     * @return void
+     */
+    public function setRun(RunInterface $run);
+
+    /**
+     * @param  \Throwable $exception
+     * @return void
+     */
+    public function setException($exception);
+
+    /**
+     * @param  InspectorInterface $inspector
+     * @return void
+     */
+    public function setInspector(InspectorInterface $inspector);
+}