Article picker now searches across your full catalog with infinite scroll

When you need to reference one of your articles from inside a form — say, picking related articles for a manual recommendation — you used to be limited to a static dropdown of recent items.

The new article picker is a proper search experience:

• Debounced search across your full article catalog as you type.
• Infinite scroll via intersection observer, so the list grows as you scroll instead of paginating in chunks.
• Properly threaded through the form context so picked articles persist across saves.

If you have a substantial archive, this picker is the difference between "I can find it in three seconds" and "I'll just paste the URL by hand".