✨ 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.

tests/global-teardown.ts

@@ -28,7 +28,7 @@ async function globalTeardown() {
         const result = await cleanupAllTestData(baseURL)
         if (deletedSeedEntries > 0 || result.users > 0) {
             console.log(
-                `Playwright teardown: deleted ${deletedSeedEntries} seeded content entries and ${result.users} test users`
+                `Playwright teardown: deleted ${deletedSeedEntries} seeded content/media entries and ${result.users} test users`
             )
         }
     } catch (err) {