feat: 若设置 $options._res.headers, 拉取文件时将设置自定义响应头

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "sub-store",
-  "version": "2.19.55",
+  "version": "2.19.56",
   "description": "Advanced Subscription Manager for QX, Loon, Surge, Stash and Shadowrocket.",
   "main": "src/main.js",
   "scripts": {

backend/src/restful/file.js

@@ -150,6 +150,7 @@ async function getFile(req, res) {
                 proxy,
                 noCache,
                 produceType,
+                all: true,
             });
 
             try {
@@ -184,9 +185,15 @@ async function getFile(req, res) {
                     )}`,
                 );
             }
-            res.set('Content-Type', 'text/plain; charset=utf-8').send(
-                output ?? '',
-            );
+            res.set('Content-Type', 'text/plain; charset=utf-8');
+            if (output?.$options?._res?.headers) {
+                Object.entries(output.$options._res.headers).forEach(
+                    ([key, value]) => {
+                        res.set(key, value);
+                    },
+                );
+            }
+            res.send(output?.$content ?? '');
         } catch (err) {
             $.notify(
                 `🌍 Sub-Store 下载文件失败`,

backend/src/restful/sync.js

@@ -40,6 +40,7 @@ async function produceArtifact({
     $options,
     proxy,
     noCache,
+    all,
 }) {
     platform = platform || 'JSON';
 
@@ -595,7 +596,7 @@ async function produceArtifact({
                   )
                 : { $content: filesContent, $files: files, $options };
 
-        return processed?.$content ?? '';
+        return (all ? processed : processed?.$content) ?? '';
     }
 }