[FEATURE] Claude Desktop: Allow resizing the left sidebar panel by dragging

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 left sidebar panel that shows conversation history has a fixed width. When conversation titles are long or similar, the visible portion is often not enough to distinguish between sessions, making it hard to find the right one.

Proposed Solution

Allow users to resize the left sidebar by dragging its edge with the mouse, similar to how most IDEs and desktop apps handle panel resizing. The selected width should persist across sessions.

Benefits

Quickly scan longer conversation titles without hovering or clicking
Better use of screen real estate on wide monitors

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Other

Use Case Example

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Additional Context

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