fix: pass git mirror CGI headers (#328)

Co-authored-by: Codex <codex@noreply.local>

scripts/src/hwlab-node-control-plane.ts

@@ -954,10 +954,24 @@ function parseHeaders(buffer) {
   return { status, headers, rest };
 }
 
+function cgiHeaderEnv(req) {
+  const env = {};
+  for (const [key, value] of Object.entries(req.headers)) {
+    if (value === undefined) continue;
+    const joined = Array.isArray(value) ? value.join(', ') : String(value);
+    const normalized = key.toUpperCase().replace(/-/g, '_');
+    if (normalized === 'CONTENT_TYPE') env.CONTENT_TYPE = joined;
+    else if (normalized === 'CONTENT_LENGTH') env.CONTENT_LENGTH = joined;
+    else env['HTTP_' + normalized] = joined;
+  }
+  return env;
+}
+
 function handleGit(req, res) {
   const url = new URL(req.url || '/', 'http://git-mirror.local');
   const env = {
     ...process.env,
+    ...cgiHeaderEnv(req),
     GIT_PROJECT_ROOT: projectRoot,
     GIT_HTTP_EXPORT_ALL: '1',
     PATH_INFO: decodeURIComponent(url.pathname),