feat(admin): wave metrics split by model version (M6)

The library page compares listen-through, early-skip and like rates per
impression model version, so v1 and the trained ranker can be compared online.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/api-client/src/generated/schema.ts

@@ -2021,6 +2021,15 @@ export interface components {
             /** @description Лайков на 100 треков */
             like_rate: number | null;
             sessions: number;
+            /** @description Те же метрики по версии модели показа (v1 / ALS / ранжировщик) — сравнение онлайн */
+            by_model: components["schemas"]["WaveModelMetrics"][];
+        };
+        WaveModelMetrics: {
+            model_ver: string;
+            served: number;
+            listen_through_rate: number | null;
+            early_skip_rate: number | null;
+            like_rate: number | null;
         };
         AndroidRelease: {
             /** @example 0.6.1 */