Fix proxy — use arrayBuffer to preserve multipart boundary, fix double /api/ in transcribe URL

app/api/[...slug]/route.ts

@@ -2,20 +2,29 @@ import { NextRequest, NextResponse } from 'next/server';
 
 const API_BASE = process.env.API_URL || 'https://ai.aaronnelson.studio';
 
-async function handler(request: NextRequest, { params }: { params: Promise<{ slug: string[] }> }) {
+async function handler(
+  request: NextRequest,
+  { params }: { params: Promise<{ slug: string[] }> }
+) {
   const { slug } = await params;
   const path = '/' + slug.join('/');
   const url = `${API_BASE}${path}${request.nextUrl.search}`;
 
   const headers = new Headers();
+
+  // Forward content-type exactly (includes multipart boundary)
   const contentType = request.headers.get('content-type');
   if (contentType) headers.set('content-type', contentType);
+
+  // Forward session cookie
   const cookie = request.headers.get('cookie');
   if (cookie) headers.set('cookie', cookie);
 
-  const body = request.method !== 'GET' && request.method !== 'HEAD'
-    ? await request.blob()
-    : undefined;
+  // Forward body
+  let body: BodyInit | undefined;
+  if (request.method !== 'GET' && request.method !== 'HEAD') {
+    body = await request.arrayBuffer();
+  }
 
   const response = await fetch(url, {
     method: request.method,
@@ -26,7 +35,8 @@ async function handler(request: NextRequest, { params }: { params: Promise<{ slu
   const responseHeaders = new Headers();
   const setCookie = response.headers.get('set-cookie');
   if (setCookie) responseHeaders.set('set-cookie', setCookie);
-  responseHeaders.set('content-type', response.headers.get('content-type') || 'application/json');
+  const respContentType = response.headers.get('content-type');
+  if (respContentType) responseHeaders.set('content-type', respContentType);
 
   return new NextResponse(response.body, {
     status: response.status,

lib/api.ts

@@ -35,7 +35,7 @@ export const api = {
   transcribe: async (audio: Blob): Promise<{ text: string }> => {
     const form = new FormData();
     form.append('audio', audio, 'recording.webm');
-    const url = API_BASE ? `${API_BASE}/api/transcribe` : '/api/api/transcribe';
+    const url = API_BASE ? `${API_BASE}/api/transcribe` : '/api/transcribe';
     const res = await fetch(url, { method: 'POST', credentials: 'include', body: form });
     if (!res.ok) throw new Error(`Transcribe error: ${res.status}`);
     return res.json();
@@ -46,7 +46,7 @@ export const api = {
     if (data.image) form.append('image', data.image);
     if (data.text) form.append('text', data.text);
     if (data.project) form.append('project', data.project);
-    const url = API_BASE ? `${API_BASE}/api/capture` : '/api/api/capture';
+    const url = API_BASE ? `${API_BASE}/api/capture` : '/api/capture';
     const res = await fetch(url, { method: 'POST', credentials: 'include', body: form });
     if (!res.ok) throw new Error(`Capture error: ${res.status}`);
     return res.json();