v0.1.29

Changes

• fix: Remove non-tasca invar and guard-contract console script entry points that hijacked upstream invar-tools commands
• Removed wrapper layers: tasca_invar_entrypoint, invar_entrypoint, invar_runtime_policy, guard_contract, sitecustomize, usercustomize
• Removed corresponding test files (1463 lines deleted)
• invar is now used directly from invar-tools dev dependency via uv run invar