Fix remaining type mismatches vs Python reference

- RotorSettings: Diversity float64→string, Energy float64→int, add Mood int and MoodEnergy string
- Ratings: Rating float64→int, add Week int and Day int
- MetatagArtistEntry: Remove Score float64 (not in Python), add PopularTracks []Track
- MusicHistoryItemData: Remove Progress float64 (not in Python)

internal/models/metatag.go

@@ -132,8 +132,8 @@ type MetatagSortByValue struct {
 // MetatagArtistEntry represents a metatag artist entry.
 type MetatagArtistEntry struct {
 	BaseModel
-	Artist *Artist `json:"artist"`
-	Score  float64 `json:"score"`
+	Artist         *Artist `json:"artist"`
+	PopularTracks  []Track `json:"popular_tracks"`
 }
 
 // Genre represents a genre from the Yandex Music API.