* feat(app): customize top-level sidebar items
Let users reorder and hide built-in and plugin sidebar rows from Appearance settings while keeping the preference device-local. Add Search as a first-class row and standardize section explanations as header info tooltips.
* fix(app): preserve consecutive sidebar preference edits
Derive each sidebar change from the latest cached settings and retain unavailable plugin slots while editing the visible list. Keep E2E interaction selectors tied to accessible control names.
* test(app): isolate provider settings unit boundary
Keep the legacy provider-section test focused on provider behavior now that its shared section shell can render the settings info control.
Mohamed Boudra
de8535c38b