fixed meta param for email template

app/Services/EmailTemplateRenderer.php

@@ -35,7 +35,15 @@ public function render(array $template, array $ctx): array
                     return $m[0];
                 }
 
-                return (string) data_get($map, $key, '');
+                $value = data_get($map, $key, '');
+
+                // If the resolved value is an array (e.g. {{ contract.meta }} used directly),
+                // return empty string instead of triggering "Array to string conversion".
+                if (is_array($value)) {
+                    return '';
+                }
+
+                return (string) $value;
             }, $input);
         };
 
@@ -176,8 +184,17 @@ protected function buildMap(array $ctx): array
                 ],
             ];
             $meta = data_get($co, 'meta');
+            if (is_string($meta)) {
+                $meta = json_decode($meta, true) ?? [];
+            }
             if (is_array($meta)) {
-                $out['contract']['meta'] = $meta;
+                // Flatten meta entries. Supports two formats:
+                // - Structured: { "sklic": { "value": "...", "type": "string", ... } } → extract 'value'
+                // - Plain:      { "sklic": "..." }                                   → use as-is
+                $out['contract']['meta'] = array_map(
+                    fn ($item) => (is_array($item) && array_key_exists('value', $item)) ? $item['value'] : $item,
+                    $meta
+                );
             }
         }
         if (isset($ctx['activity'])) {