* Generalize PKCE verifier store into SingleUseStore
* Generalize PKCE verifier store into SingleUseStore
* Extend single-use store to generate one-time retrieval codes
* Hand off proxy OIDC session via one-time code instead of URL token
* Use the single-use store in integration tests
* Read active proxy versions by cluster
* Detect proxy clusters that support session codes
* Bind OIDC session handoff mode to signed state
* Deprecate legacy OIDC session token handoff
* Remove unrelated session code test stub
* fix tests
* fix merge
* Fix session code compatibility detection
* Isolate proxy session codes in shared cache
* bump min session version
Add a UBI-based reverse-proxy image for the internal Red Hat certification requirement, without changing the existing image or deployment defaults. Includes non-root execution, licensing and image metadata, plus an AMD64 GoReleaser entry with separate UBI tags.
Preflight and TLS/overlay checks passed. An intermittent shutdown exit error remains deferred; this stays draft pending maintainer testing.