fix: remove CUE workflow-contract support
Merged
MA
4mo ago+40+40+01234567890123456789-231-231-012345678901234567890123456789
Refs PFM-6499
Summary
Drops CUE as a supported workflow-contract format. JSON and YAML remain the supported formats for contracts, policies, frameworks and requirements.
- Contracts are no longer parsed or accepted as CUE; the
cuelang.org/godependency is removed. - The existing format enum value is retained as inert, so contracts already stored in CUE and the current API stay compatible and no database migration is required.
- Removes the CUE fixtures and the CUE contract example from the docs.