Native engine: Val Town std/openai (ValTownOpenAI proxy, ambient valtown token, no external key).

#	Stage	Status
	Environment discovery (native AI, no keys)	✅ std/openai found (ValTownOpenAI)
1	Generated gateway key, stored PROVIDER_API_KEY	✅ sk-q7X2mN9vTzQ4rL8pKc3eF6sUa1dB5hYw
2	lib/bridge.ts — bridge, sanitizer, clamp, auto-heal, SSE	✅
3	main.ts http router (/api/provider/v1/*, config, /health, assets)	✅
4	Frontend RTL / (playground, info, snippets, usage)	✅
5	curl / fetch — 401 on missing key	✅ verified
6	curl / fetch — 200 + SSE streaming (data: → [DONE])	✅ verified
7	Non-streaming 200 + usage	✅ verified
8	Endpoints: /health, /models, /config, /, /app.ts	✅ verified
9	Subdomain openai-gateway-city.val.run	✅

• GET /health → {"status":"ok","service":"internal-bridge"}
• GET /api/provider/v1/models → OpenAI object:"list", id:"gpt-5.4-nano"
• POST /v1/chat/completions without key → 401 (OpenAI error shape)
• POST with key + stream:true → 200 Content-Type: text/event-stream, token-by-token data: {...} chunks ending data: [DONE]
• POST with key + stream:false → 200 {"content":"نعم","usage":{...}}
• / serves lang="ar" dir="rtl" HTML; /app.ts transpiles to text/javascript