bug(ui): Sidebar selected state has inconsistent left inset for Overview tab

[xinj10]

Description

The selected Overview sidebar item is flush against the left edge of the sidebar, while other items (Profiles, Proxies) keep a left inset/margin.

This creates inconsistent alignment between sidebar items.

Steps to reproduce

1. Open the app on macOS
2. Select the Overview tab
3. Observe the selected background touches the left edge
4. Select Profiles or Proxies
5. Observe those items have proper left spacing

Expected behavior

All sidebar items should have consistent horizontal inset/padding in their selected state.

Actual behavior

The Overview selected state has no left inset and appears attached to the sidebar edge.

Environment

• App version: 0.0.7

Screenshots

Overview tab

Other tabs