feat(pose_3d): /state espone blocco cross_camera

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tests/test_pose_3d_routes.py

@@ -208,3 +208,13 @@ def test_unlock_proxies_to_bridge():
         r = client.post("/api/pose_3d/unlock")
         assert r.status_code == 200
         assert r.json()["ok"] is True
+
+
+def test_state_includes_cross_camera_block():
+    with patch("presa_mano.api.pose_3d_routes._deps.g1") as g1_factory:
+        g1 = MagicMock()
+        g1.wrist.return_value = _fake_wrist_pair()
+        g1_factory.return_value = g1
+        r = client.get("/api/pose_3d/state")
+        assert r.status_code == 200
+        assert "cross_camera" in r.json()  # {} se mai calibrato