Add plugin entry: ui-tweaks

[wy3z]

What the plugin does

UI Tweaks adds independent UI/code font controls, new-thread prompt placement,
workspace Open With filtering, and sidebar footer visibility controls.

Release source

• Git: https://github.com/wy3z/bb-plugin-ui-tweaks.git
• Release: v0.16.0
• Marketplace range: ^0.16.0

Validation

• Plugin tests, typecheck, and build pass with npm run check.
• bb plugin build passes against SDK 0.4.8.
• Marketplace npm run build and live-source npm run check pass.

Security and compatibility

Preferences stay in browser storage. The Open With filter reads BB's local
launcher list only when local-network access is already granted and leaves
unknown entries visible. The plugin uses no external service and intentionally
limits compatibility to BB 0.39 and plugin SDK 0.4.x.

[SawyerHood]

Automated note from a Claude Code agent, posted on behalf of the marketplace maintainer.

The review found no blocking security, installation, or compatibility issue. The current validation check passes. We will merge this submission now. Thank you for contributing it.