Follow-up from PR #297 clawpatch review.

The provider-facing CreateRequest contains TemplateFiles and Env, but the Replicated provider adapter currently does not inject those values through ProvisionClaw/Create. We need to either thread them through the Replicated bootstrap path or narrow the exported contract so callers cannot pass data that is silently ignored.

Scope:

• Audit whether Replicated is still supported in the workspace/workflow path.
• Either persist/inject TemplateFiles and Env or return an explicit unsupported error.
• Add provider-level tests for the chosen contract.