chore(demo): allow screenshot api url override

scripts/capture-demo-screenshots.mjs

@@ -8,6 +8,7 @@ import { spawn } from 'node:child_process';
 
 const root = path.resolve(path.dirname(new URL(import.meta.url).pathname), '..');
 const adminUrl = process.env.ADMIN_URL || 'https://wygj-admin.localhost';
+const apiUrl = process.env.API_URL || adminUrl.replace('wygj-admin', 'wygj-api');
 const outDir = process.argv.includes('--out')
   ? path.resolve(process.argv[process.argv.indexOf('--out') + 1])
   : '/tmp';
@@ -108,7 +109,7 @@ async function login() {
         payload = JSON.stringify(body);
       }
     }
-    const response = await fetch(`${adminUrl.replace('wygj-admin', 'wygj-api')}${endpoint}`, { method, headers, body: payload });
+    const response = await fetch(`${apiUrl}${endpoint}`, { method, headers, body: payload });
     const text = await response.text();
     if (!response.ok) throw new Error(`request failed ${endpoint}: ${response.status}`);
     if (!response.headers.get('encrypt-key')) return JSON.parse(text);