Release v3.100.0

Added

• cratis ai test --install-only runs the install-phase checks of AI corpus conformance fixtures without launching a harness, so the deterministic part of the suite can run in CI with no model quota. Each fixture runs for the harnesses it declares, or the configured ones when it declares none, and --harnesses narrows the selection. (part of #204)

Changed

• cratis ai test reports a fixture check with an inconsistent shape as an error and names the reason, for example a command check without run, or a command check that also declares path, glob or pattern. (part of #204)