feat: settings window polish, sync widget fix, dark form controls
- Fix: settings overlay uses on:click|self so sidebar clicks don't close it
- Fix: openSettings(section) supports opening at specific tab
- Fix: 'Настроить' opens Settings → Синхронизация instead of Общие
- Style: dark theme select with custom arrow, global :global() CSS
- Style: settings cards, section descriptions, button/layout polish
- Style: settings gear buttons (icon-button pattern, 32px, soft hover)
- Style: settings sidebar with disabled stubs, consistent icons
- i18n: add generalDesc, workspaceDesc, appearance, localization keys
mirivlad
f92394e3d7