Search function returns duplicates

I guess some people publish the same recipe as someone else they copied it from. But the search function still seems to return exact duplicates.

Example: https://recipes.cooklang.org/?q=Lasagna
Observe that several result items are pointing to the same recipe ID

Reproduce the duplicate results using the Lasagna search URL in the issue, then trace the search entry point and result assembly in the Rust service. Done means a search returns each recipe ID only once, including for the linked Lasagna example.

Written by the indexing model from the issue text.