{"parentUuid":null,"isSidechain":true,"promptId":"ec938d38-8bb0-4964-bb2c-502c6ee78f9d","agentId":"aed0c7b7da27aaf24","type":"user","message":{"role":"user","content":"Design a minimal, production-lean implementation plan for a standalone Next.js (App Router) AI chatbot POC. Verify API details against current Vercel AI SDK v6 / AI Gateway docs (use the Vercel docs MCP search tool and WebFetch as needed) — do NOT rely on memory for the exact API surface.\n\n## Context\nThis is a POC chatbot for Covalba, a French B2B \"cool roof\" (toiture réfléchissante) company. It will be embedded via a single `` on WordPress. Injects a floating bubble bottom-right labeled \"Une question ?\". Click → opens an iframe to `/embed?origin=`. Iframe gives full CSS isolation from the WordPress theme. Responsive: desktop = fixed panel bottom-right; mobile = full-screen. Close via button inside (postMessage) or the bubble toggle.\n\nStructure:\n```js\n(function () {\n var APP = 'https://covalba-chatbot.vercel.app'; // self-derive from script src in real impl\n var origin = encodeURIComponent(location.href);\n // 1. bubble button (fixed, bottom-right, z-index high)\n // 2. iframe (hidden by default): src = APP + '/embed?origin=' + origin\n // style: desktop 380x600 panel; mobile (max-width:480px) → 100vw/100vh\n // 3. toggle open/close on bubble click\n // 4. window.addEventListener('message', e => { if (e.origin===APP && e.data?.type==='covalba-chat-close') close(); })\n // 5. derive APP from document.currentScript.src so the host/port is never hard-coded\n})();\n```\n\nKey points:\n- **Derive `APP` from `document.currentScript.src`** — never hard-code the deploy URL (matches repo rule about not hard-coding host/port).\n- `origin=location.href` → lets `capture_lead` record which page the lead came from.\n- `postMessage` close pattern with origin check (`e.origin === APP`).\n- CSS injected inline via a `