chore: remove unused modules and dependencies

Delete files with no importers (src/actions/{account,database,window}.ts,
drag-window-region, navigation-menu, ui/navigation-menu, ui/toggle,
ui/toggle-group) and the packages only they or nothing used
(@icons-pack/react-simple-icons, @radix-ui/react-icons,
@sentry/integrations, @radix-ui/react-{navigation-menu,toggle,toggle-group}).
Drop the duplicated Playwright block in .gitignore.

.gitignore

@@ -95,10 +95,6 @@ out/
 /playwright-report/
 /blob-report/
 /playwright/.cache/
-/test-results/
-/playwright-report/
-/blob-report/
-/playwright/.cache/
 
 # Tanstack
 .tanstack/