error handling

frontend/src/api/client.ts

@@ -28,8 +28,8 @@ export async function uploadDocument(file: File): Promise<void> {
   });
 
   if (!res.ok) {
-    const errData = await res.json();
-    throw new Error(errData.detail || 'Upload failed');
+    const errData = await res.json().catch(() => ({}));
+    throw new Error(errData.detail || `Upload failed (${res.status})`);
   }
 }
 
@@ -69,8 +69,8 @@ export async function streamChat(
     });
 
     if (!res.ok) {
-      const errData = await res.json();
-      throw new Error(errData.detail || 'Chat request failed');
+      const errData = await res.json().catch(() => ({}));
+      throw new Error(errData.detail || `Chat request failed (${res.status})`);
     }
 
     if (!res.body) throw new Error('No response body for streaming');

frontend/src/lib/auth.ts

@@ -39,8 +39,8 @@ export async function login(payload: LoginPayload): Promise<AuthResponse> {
   });
 
   if (!res.ok) {
-    const errData = await res.json();
-    throw new Error(errData.detail || 'Login failed');
+    const errData = await res.json().catch(() => ({}));
+    throw new Error(errData.detail || `Login failed (${res.status})`);
   }
 
   return res.json();
@@ -54,8 +54,8 @@ export async function register(payload: RegisterPayload): Promise<UserInfo> {
   });
 
   if (!res.ok) {
-    const errData = await res.json();
-    throw new Error(errData.detail?.[0]?.msg || errData.detail || 'Registration failed');
+    const errData = await res.json().catch(() => ({}));
+    throw new Error(errData.detail?.[0]?.msg || errData.detail || `Registration failed (${res.status})`);
   }
 
   return res.json();
@@ -71,8 +71,8 @@ export async function logout(): Promise<void> {
   });
 
   if (!res.ok) {
-    const errData = await res.json();
-    throw new Error(errData.detail || 'Logout failed');
+    const errData = await res.json().catch(() => ({}));
+    throw new Error(errData.detail || `Logout failed (${res.status})`);
   }
 }
 

frontend/vite.config.ts

@@ -4,4 +4,13 @@ import react from '@vitejs/plugin-react'
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react()],
-})
+  server: {
+    proxy: {
+      '/api': {
+        target: 'http://localhost:8000',
+        changeOrigin: true,
+        rewrite: (path) => path.replace(/^\/api/, ''),
+      },
+    },
+  },
+})

vercel.json

@@ -1,34 +0,0 @@
-{
-  "services": {
-    "web": {
-      "root": "frontend",
-      "framework": "vite"
-    },
-    "api": {
-      "root": "backend",
-      "entrypoint": "main.py"
-    }
-  },
-  "rewrites": [
-    {
-      "source": "/api/(.*)",
-      "destination": {
-        "service": "api",
-        "path": "/$1"
-      }
-    },
-    {
-      "source": "/((?!api/|.*\\..*).*)",
-      "destination": {
-        "service": "web",
-        "path": "/index.html"
-      }
-    },
-    {
-      "source": "/(.*)",
-      "destination": {
-        "service": "web"
-      }
-    }
-  ]
-}