✨ feat: enhance medialib image handling and add asset URL resolution

- Implemented `resolveApiAssetUrl` function to normalize asset URLs based on API base.
- Updated `MedialibImage` component to utilize new asset URL resolution and added support for alt text and class properties.
- Enhanced image loading behavior with improved width measurement and focal point handling.
- Added placeholder image handling and improved accessibility with alt text.
- Introduced new test script for auditing broken links in skill documentation.
- Expanded seeded test content to include medialib entries and updated related tests for pagebuilder previews.
- Improved global setup and teardown logging for clarity on seeded content management.

.agents/skills/nova-navigation-modeling/SKILL.md

@@ -30,6 +30,7 @@ On this stack, navigation influences:
 
 Use these sources when implementing or reviewing navigation modeling:
 
+- `tibi-admin-nova/types/admin.d.ts`
 - `tibi-admin-nova/docs/collection-config.md`
 - `api/collections/navigation.yml`
 - `frontend/src/App.svelte`
@@ -186,7 +187,7 @@ After changing navigation modeling, verify all of these:
 When asked to work on navigation in this starter, inspect in this order:
 
 1. `api/collections/navigation.yml`
-2. `tibi-admin-nova/docs/collection-config.md` section for `viewHint.navigation`
+2. `tibi-admin-nova/types/admin.d.ts` plus `tibi-admin-nova/docs/collection-config.md` for `viewHint.navigation`
 3. the frontend navigation loading/rendering path
 4. SSR assumptions around header/footer shell data
 5. the website's language and information-architecture requirements