## Studio UI Refresh — Gate Status

**Gate: CLEARED** (2026-05-12)

### BYOK Production QA Results

Verified on phantomline.xyz (production):

- **CSP headers**: `connect-src` includes `https://api.anthropic.com` and `https://api.openai.com` (server.py L343-347)
- **CloudKeyEngine**: Key input panel renders, provider/model selector works, key stored in localStorage (`ghostline.cloud.provider`, `ghostline.cloud.key`, `ghostline.cloud.model`)
- **Trial counter**: `ghostline.cloud.trial` in localStorage tracks usage; "2 free left" badge displays correctly for free-tier users
- **Pro gating**: After 2 free renders, cloud radio locks and engine auto-bumps to server (Ollama). Pro tier unlocks unlimited cloud renders.
- **No CSP violations** in browser console during cloud engine interaction

### What this means for Cesar

The BYOK cloud engine is stable in production. The studio UI refresh can proceed without worrying about cloud engine regressions. The engine switching logic (server/browser/cloud) and trial gating are all working correctly.

Do NOT modify:
- `static/engines.js` (engine classes)
- `static/phantomline.js` cloud trial logic (lines 6622-6855)
- `server.py` CSP headers

These are load-bearing and tested. Studio refresh should focus on layout/UX only.
