Danny White fb4c3ec6d4 feat(studio): add dev toolbar launcher to account settings menu (#49285) ...

## What kind of change does this PR introduce?

Feature

## What is the current behavior?

The dev toolbar is only discoverable via `window.devToolbar()` in the
browser console, or by having your email on the `devToolbarDefaultOn`
ConfigCat flag. Once enabled, Studio shows a floating trigger button.

## What is the new behavior?

In local and staging Studio, the account/settings dropdown (avatar menu)
includes a **Local tools** section above **Theme** with a **Dev
toolbar** checkbox toggle.

- **On**: shows the floating orb (persists via localStorage, same as
`window.devToolbar()`)
- **Off**: hides the orb and dismisses the toolbar

Open the panel itself via the orb once it is visible. Production builds
are unchanged (`isAvailable` is false and the menu item is hidden).

| After |
| --- |
| <img width="226" height="204" alt="CleanShot 2026-08-20 at 12 46
38@2x"
src="https://github.com/user-attachments/assets/c846b119-626d-48f5-9a02-aef4d006326c"
/> |
| <img width="558" height="1024" alt="CleanShot 2026-08-20 at 12 47
04@2x"
src="https://github.com/user-attachments/assets/4b3dd22b-537b-4874-821d-c202033c4ad7"
/> |

## Manual testing

Run `pnpm dev:studio` and open http://localhost:8082.

1. **Find the entry point:** top-right avatar/settings menu → **Local
tools** → **Dev toolbar** (above **Theme**). Should not appear in
production builds.
2. **Turn it on:** check **Dev toolbar**. A green floating orb should
appear (default bottom-right).
3. **Open the panel:** click the orb. The **Dev Toolbar** sheet should
open with Events and Flags tabs.
4. **Event count:** navigate around Studio (e.g. open a project, switch
pages). The orb badge should increment and stay readable in light and
dark mode.
5. **Turn it off:** reopen the avatar menu and uncheck **Dev toolbar**.
The orb and panel should disappear.
6. **Close vs hide:** with the toolbar on, open the sheet and use
**Close** (X). The orb should remain; only the sheet closes.

Optional: confirm `window.devToolbar()` in the browser console still
enables the orb.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added a Local tools option to enable the development toolbar when
available.
* Toolbar activation and dismissal preferences now persist between
sessions.
* Added clearer event-count badges with responsive sizing for larger
counts.

* **Improvements**
  * Simplified toolbar controls by removing the separate hide option.
* Improved toolbar availability handling across local and production
environments.

* **Tests**
* Expanded coverage for activation, persistence, visibility, and
event-count badges.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Danny White <dnywh@users.noreply.github.com>
Co-authored-by: Sean Oliver <882952+seanoliver@users.noreply.github.com>

2026-08-21 10:53:50 +10:00

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