ADR-244: A site names its configuration and its DeepL key 

Context 

An installation with several sites, often several clients, had one default configuration and one DeepL key for all of them. ADR-238 gave term lists a site, read from the metadata key nrllm.siteIdentifier, but no caller filled it. TranslationOptions::withSite() existed for the glossary (ADR-208) only.

Decision 

Two site settings in the set netresearch/nr-llm: nrllm.configuration holds the identifier of an LLM configuration, nrllm.deepl.apiKeyIdentifier the identifier of an nr-vault secret. A key never sits in a site setting, because settings.yaml is versioned with the project; this is how a provider key and the global DeepL key are stored too.

The site replaces the installation default and nothing else. An explicit choice wins: a pinned provider, a configuration the caller passes, an extension's own named configuration. Below that comes the configuration the site names, then the installation default. chat(), complete() and streamChat() apply it for a call that states its site; ConfigurationResolver::resolveForSite() lets an extension with its own fallback put the site in the same place.

A site that names something unusable fails the call. A configuration that does not exist or is disabled, a group-restricted one on a path without an actor to check — chat(), complete() and streamChat() have none — and a DeepL identifier the vault does not hold are errors. resolveForSite() with an actor applies the group rule instead. Falling back would send the site's text to the provider or the DeepL account the site was set up to avoid.

The caller states the site. withSite() moves from TranslationOptions to AbstractOptions; it and the metadata key end in the same place. nr-llm does not derive the site from the request, because a worker has none.

DeepL binds per call. DeepLTranslator::forSite() returns a copy with the site's identifier. The shared service keeps the global one, and Free or Pro is remembered per identifier, so a worker serving two sites does not send one site's key to the other's endpoint. A site glossary carries its site, so its DeepL glossary is created in that site's account; one created earlier under another key is refused by DeepL and recreated (ADR-208).

Who may change it: administrators. The settings editor is the site_settings module in TYPO3 13.4 and the editSettings route of site_configuration in 14.3, both with access admin. An administrator who points the DeepL setting at another vault entry gains nothing, since an administrator can already reach the vault.

Consequences 

• ● One installation serves sites with their own provider, model and DeepL account, and term lists bound to a site work.
• ● The settings hold identifiers only; no secret enters the repository.
• ◑ A site has to depend on the set for the editor to show the settings.
• ◑ Embeddings, vision, conversations and the image and speech services do not read the site's configuration.
• ✕ A call whose caller does not state its site gets the installation default.

Net Score: +3

Alternatives considered 

The DeepL key in the site setting. Rejected: it would be committed with the site configuration.

Fall back to the installation default when the site's choice is unusable. Rejected: silent, and it defeats the reason a site names its own choice.

Derive the site from the current request. Rejected: the worker, the scheduler and the CLI have no request, and a backend request is not always about the page it was sent from.