[skerbis]

Summary

Fixes #208 ("Class "rex_api_quicknavigation_render" not found" after updating the addon).

This is a regression: rex_api_quicknavigation_render and rex_api_quicknavigation_media_search were added as @deprecated global-namespace alias classes to fix the exact same error previously reported in #165. They were removed again in a later CS-Fixer/cleanup pass (833f2a0, "deprecated methoden und classes entfernt"), without the underlying cause being addressed — reintroducing the bug for anyone hitting the same stale-cache window.

Root cause: REDAXO keeps a global autoload classmap cache (cache/core/autoload.cache). On some addon updates — especially on older core versions, per the reporter's 5.15.1 — this cache isn't reliably rebuilt for every affected class right after the package update finishes, so a stale reference to the old class name can survive until a full cache rebuild happens (a Safe Mode toggle forces exactly that, which is why it "fixes" the problem for affected users).

Fix: restore both deprecated alias classes so installations that hit this stale-cache window keep working without needing a manual Safe Mode toggle, exactly as intended when #165 was originally fixed.

Version bumped to 9.1.1, CHANGELOG updated.

Test plan

• Confirmed both restored files are plain global-namespace class aliases extending the current namespaced classes (FriendsOfRedaxo\QuickNavigation\ApiFunction\MenuRender / MediaSearch), matching their state right before removal
• php -l clean on both files
• Can't reproduce the actual stale-cache condition locally (it depends on REDAXO core's update-time cache rebuild timing on specific older core versions) — restoring the exact previously-working fix for the identical previously-reported issue (Während des Updates: Class "rex_api_quicknavigation_render" not found #165) is the safest available remediation

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