feat(platform): 从开通线索创建订单时自动回写线索为已转化

resources/views/admin/platform_leads/index.blade.php

@@ -22,12 +22,16 @@
             $l->mobile,
             $l->company,
             $l->email,
+            // 后续可用于“从线索追溯来源页/入口”
+            $l->source ? ('src:' . $l->source) : '',
         ], fn ($v) => (string) $v !== '');
 
         $q = [
             'order_type' => 'new_purchase',
             'back' => $selfWithoutBack,
-            'remark' => mb_substr(implode(' / ', $remarkParts), 0, 180),
+            'remark' => mb_substr(implode(' / ', $remarkParts), 0, 220),
+            // 轻量联动：从线索创建订单后，把线索标记为已转化（后续可再升级为“创建成功后回写”）
+            'lead_id' => (int) $l->id,
         ];
 
         if ((int) $l->plan_id > 0) {