Web traffic redirection: openproductfacts.org to openproductsfacts.org

[jayaddison]

Problem

The TLD openproductfacts.org (product, singular) belongs to OpenFoodFacts, as do the subdomains of it (p. ex. world.openproductfacts.org).

The OpenProductsFacts (products, plural) operated by the OpenFoodFacts organization can be found at: https://openproductsfacts.org

However, when web browsing to openproductfacts.org or world.openproductfacts.org, using the singular product term, the user encounters either:

* With HTTP: an empty `nginx` page
* With HTTPS: a TLS certificate warning (the cert belongs to `auth.openfoodfacts.org`)

Proposed solution

Redirect traffic from openproductfacts.org domains to the corresponding openproductsfacts.org domains.

Additional context

From Slack thread at: https://openfoodfacts.slack.com/archives/C1FPYCWM7/p1751287506547849

Code pointers

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Number of products impacted

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Time per product

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Mockups

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Part of

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