feat(toolbox): support running from a phar self-contained installer

.gitignore

@@ -0,0 +1 @@
+/dist/

packages/commands/src/Toolbox/Catalog.php

@@ -26,8 +26,23 @@ final class Catalog
             return $this->cache;
         }
 
+        if (!is_dir($this->packagesDir)) {
+            return $this->cache = [];
+        }
+
         $packages = [];
-        foreach (glob($this->packagesDir . '/*/duckbrain.json') ?: [] as $manifestPath) {
+        // Se enumera con DirectoryIterator (no glob) para que funcione también
+        // bajo el stream wrapper `phar://` del instalador autocontenido.
+        foreach (new \DirectoryIterator($this->packagesDir) as $entry) {
+            if (!$entry->isDir() || $entry->isDot()) {
+                continue;
+            }
+
+            $manifestPath = $entry->getPathname() . '/duckbrain.json';
+            if (!is_file($manifestPath)) {
+                continue;
+            }
+
             $manifest                  = Manifest::fromFile($manifestPath);
             $packages[$manifest->name] = $manifest;
         }

packages/commands/src/Toolbox/Commands/Command.php

@@ -69,7 +69,7 @@ abstract class Command implements CommandInterface
 
     protected function toolboxDir(array $options): string
     {
-        return rtrim($this->option($options, 'toolbox', getcwd() ?: '.') ?? '.', '/');
+        return rtrim($this->option($options, 'toolbox') ?? Config::toolboxDir(), '/');
     }
 
     protected function rootCore(array $options, string $root): ?string

packages/commands/src/Toolbox/Config.php

@@ -22,6 +22,30 @@ final class Config
             ?: 'git@git.kj2.me:kj/duckbrain.git';
     }
 
+    /**
+     * Raíz del toolbox (la que contiene `packages/`). Prioridad: variable de
+     * entorno, raíz del phar si corre dentro de uno, raíz del repositorio, cwd.
+     */
+    public static function toolboxDir(): string
+    {
+        $override = self::env('DUCKBRAIN_TOOLBOX_DIR');
+        if ($override !== '') {
+            return rtrim($override, '/');
+        }
+
+        $phar = \Phar::running(true);
+        if ($phar !== '') {
+            return rtrim($phar, '/');
+        }
+
+        $repo = \dirname(__DIR__, 4);
+        if (is_dir($repo . '/packages')) {
+            return $repo;
+        }
+
+        return getcwd() ?: '.';
+    }
+
     public static function updateUrl(): string
     {
         return self::env('DUCKBRAIN_UPDATE_URL')