Use decompress: false for transparent proxy passthrough

Bun's fetch has a decompress option that passes responses through
without interpreting content-encoding. This replaces all the manual
header stripping workarounds.

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

src/proxy.ts

@@ -19,20 +19,14 @@ export function createProxy(socketPath: string, isHealthy: () => boolean, isRunn
     }
 
     const hasBody = req.method !== 'GET' && req.method !== 'HEAD'
-    const headers = new Headers(req.headers)
-    headers.delete('accept-encoding')
     const body = hasBody ? await req.arrayBuffer() : undefined
 
     return fetch(`http://localhost${url.pathname}${url.search}`, {
       method: req.method,
-      headers,
+      headers: req.headers,
       body,
       unix: socketPath,
-    }).then((r) => {
-      const respHeaders = new Headers(r.headers)
-      respHeaders.delete('content-encoding')
-      respHeaders.delete('content-length')
-      return new Response(r.body, { status: r.status, headers: respHeaders })
+      decompress: false,
     }).catch((e) => {
       console.error('Proxy error:', e)
       return new Response('Tronbyt server is not responding', { status: 502 })