refactor: merge 6 EditableTitle wrappers into one file

Replace EditableSessionTitle, EditableMotivatorTitle, EditableYearReviewTitle,
EditableWeatherTitle, EditableWeeklyCheckInTitle, EditableGifMoodTitle individual
files with a single EditableTitles.tsx using spread props. Same public API.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/components/ui/index.ts

@@ -4,11 +4,14 @@ export { Button } from './Button';
 export { Card, CardHeader, CardTitle, CardDescription, CardContent, CardFooter } from './Card';
 export { CollaboratorDisplay } from './CollaboratorDisplay';
 export { EditableTitle } from './EditableTitle';
-export { EditableSessionTitle } from './EditableSessionTitle';
-export { EditableMotivatorTitle } from './EditableMotivatorTitle';
-export { EditableYearReviewTitle } from './EditableYearReviewTitle';
-export { EditableWeeklyCheckInTitle } from './EditableWeeklyCheckInTitle';
-export { EditableWeatherTitle } from './EditableWeatherTitle';
+export {
+  EditableSessionTitle,
+  EditableMotivatorTitle,
+  EditableYearReviewTitle,
+  EditableWeeklyCheckInTitle,
+  EditableWeatherTitle,
+  EditableGifMoodTitle,
+} from './EditableTitles';
 export { PageHeader } from './PageHeader';
 export { Input } from './Input';
 export { ParticipantInput } from './ParticipantInput';