chore: authenticated user store providers

docs/pages/docs/changelog/index.md

docs/pages/docs/features/ai/prompt-engineering/index.md

...ages/docs/features/ai/prompt-engineering/mistral/index.md

.../pages/docs/features/ai/prompt-engineering/phi-2/index.md

docs/pages/docs/features/ai/server/index.md

docs/pages/docs/features/ai/server/llama-cpp/index.md

src/Attribute/ProvidesAuthenticatedUser.php

src/AuthenticatedUserProvider.php

src/AuthenticatedUserStoreAggregate.php

src/AuthenticatedUserStoreInterface.php

src/Gatekeeper.php

src/GatekeeperRequestContext.php

src/HttpMiddleware/RequiresOAuth2ScopeMiddleware.php

src/HttpResponder/OAuth2/PostSessionAuthentication.php

src/LlamaCppClient.php

src/LlamaCppConfiguration.php

src/OAuth2AuthorizationCodeFlowController.php

src/OAuth2ClaimReader.php

src/SessionAuthentication.php

src/SingletonCollection.php