✨ 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/AGENTS.md

@@ -4,6 +4,12 @@ Playwright tests for E2E, API, mobile, and visual regression. Config in `playwri
 
 For the full current workflow, prefer the `playwright-testing` skill.
 
+## Related skills
+
+- `content-authoring` when test failures may be caused by collection, block-registry, or typing drift.
+- `media-seo-publishing` when the failing surface includes medialib/image rendering or shared widget behavior.
+- `tibi-hook-authoring` or `tibi-actions-and-forms` when API behavior under test is defined by hooks or actions instead of plain CRUD.
+
 ## Running tests
 
 - All tests: `yarn test`
@@ -44,6 +50,7 @@ BrowserSync keeps a WebSocket open permanently, preventing `networkidle` and `lo
 - `e2e/fixtures.ts` — Shared desktop helpers (`waitForSpaReady`, `navigateToRoute`, `clickSpaLink`) with BrowserSync-safe navigation defaults.
 - `e2e-admin/fixtures.ts` — Shared admin helpers (`loginToAdmin`, `openNovaProjectDashboard`) for committed admin smoke coverage.
 - `e2e-admin/content-config.spec.ts` — Checks that collection config is actually reflected in Nova: sensible list columns/previews, usable widgets, and working pagebuilder preview.
+- `e2e-admin/pagebuilder.spec.ts` — Checks that the configured pagebuilder block registry renders seeded preview blocks, including an image-backed block via the shared media widget.
 - `e2e-visual/fixtures.ts` — Visual test helpers (`waitForVisualReady`, `hideDynamicContent`, `prepareForScreenshot`, `expectScreenshot`, `getDynamicMasks`).
 - `e2e-mobile/fixtures.ts` — Mobile helpers (`openHamburgerMenu`, `isMobileViewport`, `isTabletViewport`, `isBelowLg`).
 - `api/fixtures.ts` — API fixtures (`api`, `adminApi`).
@@ -51,6 +58,8 @@ BrowserSync keeps a WebSocket open permanently, preventing `networkidle` and `lo
 - `fixtures/test-constants.ts` — Central constants (`ADMIN_TOKEN`, `API_BASE`, `TEST_BASE_URL`, `SEEDED_TEST_CONTENT`).
 - Use committed admin smoke tests for stable admin contracts. Use one-shot MCP/browser checks only as exploratory supplements, not as the sole regression guard for important admin paths.
 - Use admin tests specifically to catch broken collection configuration: empty/bad list previews, missing widgets, broken dependsOn behavior, or non-rendering pagebuilder previews.
+- Prefer at least one seeded admin preview test that covers a real image-backed pagebuilder block. That catches broken block registries, missing `_lookup` hydration, and admin-incompatible media URL handling early.
+- Keep test fixtures aligned with the real shared frontend contract; do not add test-only media URL rules or duplicate block-rendering assumptions that diverge from runtime code.
 - `api/helpers/test-user.ts` is legacy starter scaffolding and should only be reused if the project really needs JWT-user coverage again.
 
 ## Visual regression