Fix R128 and remaining ID fields to accept both JSON types

- Track.R128 and TrackShort.R128: float64 → JSONR128 (accepts both JSON number and object)
- All remaining primary ID fields: string → JSONID (accepts both JSON string and number)
  Fixed in: account, artist, clip, concert, feed, label, landing, metatag,
  music_history, pin, queue, radio, search, settings, supplement

internal/models/artist.go

@@ -8,7 +8,7 @@ import (
 // Artist represents a full artist from the Yandex Music API.
 type Artist struct {
 	BaseModel
-	ID          string       `json:"id"`
+	ID          JSONID       `json:"id"`
 	Name        string       `json:"name"`
 	CoverURI    string       `json:"cover_uri"`
 	Genres      []string     `json:"genres"`
@@ -210,7 +210,7 @@ type ArtistDonations struct {
 
 // DonationItem represents a donation item.
 type DonationItem struct {
-	ID          string `json:"id"`
+	ID JSONID `json:"id"`
 	Title       string `json:"title"`
 	Description string `json:"description"`
 	Amount      int    `json:"amount"`
@@ -222,7 +222,7 @@ type DonationItem struct {
 // ConcertShort represents a concert (minimal for artist).
 type ConcertShort struct {
 	BaseModel
-	ID        string `json:"id"`
+	ID JSONID `json:"id"`
 	Title     string `json:"title"`
 	Date      string `json:"date"`
 	Venue     string `json:"venue"`
@@ -298,7 +298,7 @@ func (c *ConcertShort) DeList(data []byte, client ClientInterface) ([]Model, err
 // ClipShort represents a clip (minimal for artist).
 type ClipShort struct {
 	BaseModel
-	ID         string `json:"id"`
+	ID JSONID `json:"id"`
 	Title      string `json:"title"`
 	Duration   int    `json:"duration"`
 	CoverURI   string `json:"cover_uri"`