fix(ui): move window controls position setting to Appearance (#2406)

* fix(ui): move window controls position setting to Appearance

Keep desktop chrome layout with other visual settings; General retains
startup, tray, network, and access controls. Update settings search page
mapping so the control still highlights correctly.

Authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

* fix(ui): align Linux window controls and stop actions overlap

Size left-side window controls to match the titlebar icon row and drop
negative margins so the reserved titlebar width stays accurate. This keeps
the project-actions chevron from colliding with the New session title.

Authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

* fix(ui): stack window-controls description above chips

Show the Appearance window-controls helper copy full-width under the
section title, with Auto/Left/Right chips beneath it.

Authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

---------
Authored-by: Serhii Dziupin <makeittech@users.noreply.github.com>

packages/ui/src/lib/settings/search.ts

@@ -392,7 +392,7 @@ const SETTINGS_SEARCH_ITEMS: readonly SettingsSearchItem[] = [
   },
   {
     id: 'sessions.desktop-window-controls-position',
-    page: 'general',
+    page: 'appearance',
     titleKey: 'settings.openchamber.desktopNetwork.field.windowControlsPosition',
     descriptionKey: 'settings.openchamber.desktopNetwork.field.windowControlsPositionDescription',
     keywords: ['desktop', 'window', 'controls', 'minimize', 'maximize', 'close', 'titlebar', 'linux', 'windows'],