The generator fix that respects a lexicon's output encoding was already on glex main; streamplace pinned the commit before it. Regenerated stubs now answer exportBundle as application/zip (and CAR / mp4 endpoints with their declared types), so the handler-side override is dropped. Claude-Session: https://claude.ai/code/session_014aPQ5yqG9QFxKnbwQfCYKa (cherry picked from commit f71173e92992cba494474f0c5c3eb11ab992173b)