Add voice name flow controls and analytics

ui/analyst/mock-analytics.json

@@ -78,6 +78,45 @@
       "closed_without_operator_rate": 48.6
     }
   ],
+  "voice_name_flow": {
+    "totals": {
+      "scenario_calls": 196,
+      "start_obtained": 118,
+      "downstream_ai_obtained": 34,
+      "followup_required": 18,
+      "name_not_obtained": 26,
+      "manual_corrected": 12,
+      "handoff_confirmed_name": 14,
+      "handoff_unconfirmed_name": 28,
+      "needed_downstream": 78
+    },
+    "languages": [
+      {
+        "language": "ru",
+        "share": 0.58,
+        "start_capture_rate": 66.2,
+        "downstream_rescue_rate": 47.4,
+        "handoff_unconfirmed_rate": 31.8,
+        "manual_correction_rate": 14.6
+      },
+      {
+        "language": "kz",
+        "share": 0.29,
+        "start_capture_rate": 61.7,
+        "downstream_rescue_rate": 51.3,
+        "handoff_unconfirmed_rate": 28.4,
+        "manual_correction_rate": 11.8
+      },
+      {
+        "language": "unknown",
+        "share": 0.13,
+        "start_capture_rate": 44.8,
+        "downstream_rescue_rate": 36.1,
+        "handoff_unconfirmed_rate": 46.5,
+        "manual_correction_rate": 23.0
+      }
+    ]
+  },
   "agent_shift_rows": [
     {
       "shift_key": "night",