fix(studio): allow sixty seconds for AI generation

app/lib/studio-ai.ts

@@ -4,6 +4,7 @@ import type {
 } from "@wrnexus/design-studio";
 
 export const APIMART_MODEL = "gpt-6-luna";
+export const AI_TIMEOUT_MS = 60_000;
 export function apimartProvider(
   apiKey: string,
   transport: typeof fetch = fetch,
@@ -117,7 +118,7 @@ export function studioAI(apiKey?: string, transport: typeof fetch = fetch) {
         templateVersion: 1,
         maxAttempts: 2,
         maxOutputTokens: 4096,
-        timeoutMs: 20000,
+        timeoutMs: AI_TIMEOUT_MS,
       });
     if (!url.pathname.endsWith("/generate") || request.method !== "POST")
       return json({ error: "Method not allowed." }, 405);
@@ -151,6 +152,7 @@ export function studioAI(apiKey?: string, transport: typeof fetch = fetch) {
         provider: apimartProvider(apiKey, transport),
         model: APIMART_MODEL,
         signal: request.signal,
+        timeoutMs: AI_TIMEOUT_MS,
       });
       return json(result);
     } catch (error) {