Remove shelved identity/drive tests that existed to justify premature
persona wiring, and update remaining tests to match the current runtime
contract: empty vault triggers unknown_domain gate on first turn, versor_apply
always closes to unit versor, and null-cone preservation is deferred to an
explicit geometry API.
562 passed, 4 skipped, 0 failed.
Add geometry-backed ArticulationPlan and realize(), wire articulation into ChatRuntime and trace output, expose proposition relation_norm, and add articulation/runtime/CLI tests.
Add RuntimeConfig with English default output policy, wire output language through runtime/frame selection/generation/CLI, preserve language metadata in mounted manifolds, and add runtime/CLI policy tests.
