fix(ui): show project names exactly as the folder is named

Auto-derived project labels were title-cased, turning .ssh into .Ssh and
opencode-claude into Opencode Claude. Show the folder name verbatim in the
sidebar, window title, settings selector and notification templates, and
migrate persisted legacy labels back to the folder name (manual renames
are preserved).

packages/ui/src/components/sections/shared/SettingsProjectSelector.tsx

@@ -12,9 +12,7 @@ import { isVSCodeRuntime } from '@/lib/desktop';
 import { cn } from '@/lib/utils';
 import { useI18n } from '@/lib/i18n';
 
-const formatProjectLabel = (label: string): string => {
-  return label.replace(/[-_]/g, ' ').replace(/\b\w/g, (char) => char.toUpperCase());
-};
+const formatProjectLabel = (label: string): string => label.trim();
 
 export const SettingsProjectSelector: React.FC<{ className?: string }> = ({ className }) => {
   const { t } = useI18n();