Strip accept-encoding to avoid ZlibError in proxy chain

The Go server returns gzip responses, but when Bun proxies these
through to the toes proxy, the double-proxy causes a ZlibError
during decompression. Stripping accept-encoding tells the Go
server to send uncompressed responses.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/server.ts

@@ -30,10 +30,12 @@ function proxyFetch(req: Request): Promise<Response> | Response {
   }
 
   const hasBody = req.method !== 'GET' && req.method !== 'HEAD'
+  const headers = new Headers(req.headers)
+  headers.delete('accept-encoding')
 
   return fetch(`http://localhost${url.pathname}${url.search}`, {
     method: req.method,
-    headers: req.headers,
+    headers,
     body: hasBody ? req.body : undefined,
     unix: SOCKET_PATH,
   }).catch((e) => {