9db74c7cee
## Summary - replace the block-structured TIRx exec-scope surface with scope-qualified `Tx.<scope>.<op>` namespaces and migrate call sites - split TIRx op namespaces and remove the unused dynamic generic-op fallback - add explicit CUDA launch bounds plumbing through TIRx attrs and split-host-device lowering ## Validation - `git diff --check apache/main..HEAD` - `pre-commit run --from-ref apache/main --to-ref HEAD`