修改自动推广的相关任务

application/api/controller/EmailClient.php

@@ -2624,14 +2624,25 @@ class EmailClient extends Base
         if (!is_string($tpl) || $tpl === '') return '';
         if (!is_array($vars) || empty($vars)) return $tpl;
 
-        $replace = [];
+        $map = [];
         foreach ($vars as $k => $v) {
             $key = trim((string)$k);
             if ($key === '') continue;
-            $replace['{{' . $key . '}}'] = (string)$v;
-            $replace['{' . $key . '}'] = (string)$v;
+            $map[$key] = (string)$v;
         }
-        return str_replace(array_keys($replace), array_values($replace), $tpl);
+        if (empty($map)) return $tpl;
+
+        // 双大括号：允许内部有空格，如 {{ var }} / {{  var  }}
+        $tpl = preg_replace_callback('/\{\{\s*([A-Za-z0-9_\-\.]+)\s*\}\}/', function ($m) use ($map) {
+            return array_key_exists($m[1], $map) ? $map[$m[1]] : $m[0];
+        }, $tpl);
+
+        // 单大括号：保持严格匹配（不允许内部空格），避免误伤正文
+        $single = [];
+        foreach ($map as $k => $v) {
+            $single['{' . $k . '}'] = $v;
+        }
+        return str_replace(array_keys($single), array_values($single), $tpl);
     }
 
     private function renderFromTemplate($templateId, $journalId, $varsJson, $styleId = 0)