# Phase 4: Course & Content Management

## Categories Structure
Constructed `/admin/categories` endpoints handling CRUD. Categories support `parent_id` for nested structuring (e.g., Data Science -> Machine Learning). The hierarchy is maintained cleanly utilizing standard Laravel recursive relationships (`parent` and `children`).

## Course Construction
Constructed `/admin/courses` endpoints supporting the complex fields mapped to the UUID-based `courses` table.

### Feature breakdown
- **Thumbnails**: Fully handled via Laravel's native `'public'` disk. Automatically removes stale images when updating. `php artisan storage:link` has been successfully executed linking `public/storage`.
- **Slugs**: Unified via `$validated['slug'] = Str::slug($validated['title']) . '-' . uniqid();` resolving any URL collision issues implicitly.
- **Instructors**: Forms selectively pull strictly from `User::role(['instructor', 'admin'])->get()` restricting non-authorized users.
- **Builder UI**: The `admin/courses/edit` view applies a pseudo-SPA feel utilizing Alpine.js (`x-show="tab === 'modules'"`) splitting "Basic Admin Info" from the interactive "Modules & Lessons Builder". Currently scaffolded the read-logic for modules and lessons to display dynamically nested.

## Next Steps
Data structure for Course content generation is live. The modules UI prepares for drag/drop logic, but structurally the Phase is concluded. Proceed to **Phase 5: Enrollment & Payment Admin** to bridge users to these courses.