No Cas Flag

--no-cas flag for disabling CAS per command

The new --no-cas flag disables the CAS for a single invocation, even when the cas experiment is enabled. It is available on run, stack generate, and stack run.

terragrunt stack generate --experiment cas --no-cas

This is useful when you want to fall back to the standard getter path without unwinding experiment configuration.

Generation and runs error when --no-cas is combined with update_source_with_cas = true on any reachable unit, stack, or terraform block, since relative sources in catalog repositories cannot be resolved without the CAS.