fix(elixir-client): Sync CDN-resilience fixes from the TypeScript client#4231

Merged

magnetised merged 3 commits intomainfrom

magnetised/elixir-client-sync-20260429

Apr 29, 2026

Commits on Apr 29, 2026

Add cache-buster to URL on every 409 to prevent CDN infinite loops
magnetised
committed
Self-heal expired-handle cache when stale retries are exhausted
magnetised
committed
Emit synthetic must-refetch control message on 409 regardless of body
magnetised
committed