# Todo 53.6: Browser Visual QA

## Blocker

The local application starts and serves the new assets, but the current Codex browser runtime reports an empty browser list. Desktop and narrow-screen visual/interaction QA therefore cannot be performed in this session.

## Verified Before Blocker

- Full suite: `617 passed`, one existing Starlette/httpx deprecation warning.
- `node --check src/agent_lab/presentation/static/app.js` passes.
- `git diff --check` passes.
- Application import prints `Agent Lab`.
- HTTP smoke at `http://127.0.0.1:8010/` returns the new `console-layout`, `debug-drawer`, `20260714-professional-console` assets, and console interaction functions.

## Required Browser Checks

### Desktop

- Session and Tools start expanded; Agent Config and Snapshot start collapsed and can be opened.
- Drawer opens/closes, releases chat width, and persists after reload.
- Tool selection, All/None, count, mode badge, and EventPrompt remain synchronized.
- `dual_agent` shows exactly one selected-tool EventPrompt.
- `chat_agent_tools` hides EventPrompt and disables only EventAgent model-specific settings.
- Switching back restores exactly one EventPrompt at its prior position.
- Session/snapshot restore cannot duplicate EventPrompt.
- Chat send, streaming, audit dialog, and usage rendering remain usable.

### Narrow screen (`<= 900px`)

- Controls, workspace, and open drawer stack vertically.
- No horizontal page scrollbar appears.
- Messages, metrics, composer, tool selection, and modal controls remain usable.
- Closing the drawer removes its stacked region.

## Resume Rule

When a browser backend is available, run the checks above. If a defect is found, add Todo `53.6.x` beneath this row. If all checks pass, mark 53.6 and 53 done, record browser evidence, update the Todo 53 plan checkboxes, run the final automated gate, and merge locally into `codex/agent-lab-mvp`.