Get relationship scores

Read the live relationship score meter for one app-owned session. This is an explicit alias for the opt-in ``relational_meter`` on ``GET /v1/sessions/{id}/state``. By default it returns a redacted empty meter. Use ``GET /v1/me`` to discover the ``app_id`` for your key, then ``PATCH /v1/apps/{app_id} {"expose_relational_numerics": true}``. After opt-in, this endpoint returns final per-dimension 0..1 values such as ``affection_toward_user`` and ``romantic_interest`` for dating schemas. Raw extractor deltas, patch history, signal events, critic reasoning, and prompt text are never exposed. Typical opt-in response: ```json { "relationship_scores": [ { "key": "affection_toward_user", "label": "affection", "value": 0.62, "lower_is_open": false, "updated_at": "2026-06-22T05:10:00+00:00", "version": "2026-06-22T05:10:00+00:00" }, { "key": "romantic_interest", "label": "romantic interest", "value": 0.41, "lower_is_open": false, "updated_at": "2026-06-22T05:10:00+00:00", "version": "2026-06-22T05:10:00+00:00" } ], "score_contract": { "score_version": "relationship_scores.v1", "scale": {"min": 0.0, "max": 1.0}, "semantics": {"monotonic": false, "may_move_down": true} } } ```