Refactor the marriage profile and assessment flow to use a new overview
endpoint, reducing the need to fetch full question schemas for the
initial list view.
- Implement `getFormOverview` and `useFormOverviewQuery` to fetch
high-level section metadata.
- Update `QuestionDetailClient` and `QuestionsListPage` to utilize
the overview data for rendering progress and section lists.
- Refactor `schema-adapter` to support mapping overview sections to
frontend `QuestionListItem` objects.
- Optimize proxy performance by adding TTFB metrics and improving
encoding support.
- Improve UI/UX with better overscroll behavior and viewport settings.
- Add unit and integration tests for the new schema adapter and
required steps component.