Ctrl+scroll wheel zoom in the desktop app

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

The Claude Code desktop app already supports zoom via keyboard shortcuts (Ctrl+=, Ctrl+-, Ctrl+0 — see #78002), but there's no way to zoom using Ctrl + mouse wheel scroll, which is the standard interaction in browsers and most other desktop apps (VS Code, Chrome, etc.).

The chat/UI text is quite small by default, and repeatedly pressing Ctrl+= is less convenient than scrolling when I need to adjust zoom frequently for readability. This is about the main app UI (chat, sidebar, etc.), not the embedded browser Preview panel (which is tracked separately in #34998).

Proposed Solution

Add support for Ctrl + mouse wheel scroll to zoom the desktop app's UI in and out, mirroring the existing keyboard zoom shortcuts (Ctrl+=/Ctrl+-/Ctrl+0) and matching standard OS/browser conventions.

Interaction: while holding Ctrl, scrolling the mouse wheel up zooms in and scrolling down zooms out, applying the same zoom level as the existing keyboard shortcuts (so both mechanisms stay in sync).

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Other

Use Case Example

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Additional Context

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