- ➕ Extend `withDetails` flag in Lecturer API to include `next_event` (date of the next course event or null).
- 🧪 Update feature tests to assert presence and validity of `next_event` in responses.
- 🚀 Introduced feature tests for courses and lecturers, covering pagination limits, detailed data retrieval, and 404 responses.
- ✏️ Updated `CourseController` to support `withDetails` for courses, including lecturer and next event data.
- ✏️ Updated `LecturerController` to support `withDetails` for lecturers, including future events count.
- ⚙️ Expanded routes to include `show` endpoints for courses and lecturers.