feat: 支持自定义订阅节点并兼容现有数据库

app/api/subscription/[token]/clash/route.ts

@@ -1,4 +1,7 @@
-import { buildSubscriptionConfig, buildSubscriptionHeaders } from "@/lib/subscription";
+import {
+  buildSubscriptionConfig,
+  buildSubscriptionHeaders,
+} from "@/lib/subscription";
 import {
   getSubscriptionSettings,
   getUserBySubscriptionToken,
@@ -26,10 +29,13 @@ export async function GET(
   try {
     body = buildSubscriptionConfig({ user, nodes, settings });
   } catch {
-    return new Response("subscription secret unavailable", { status: 409 });
+    return new Response("subscription configuration unavailable", {
+      status: 409,
+    });
   }
 
-  const profileName = user.subscription_label || settings.profileName || user.username;
+  const profileName =
+    user.subscription_label || settings.profileName || user.username;
 
   return new Response(body, {
     status: 200,