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/settings.go

@@ -54,7 +54,7 @@ func (e *Experiments) DeList(data []byte, client ClientInterface) ([]Model, erro
 // ExperimentDetail represents experiment details.
 type ExperimentDetail struct {
 	BaseModel
-	ID          string `json:"id"`
+	ID JSONID `json:"id"`
 	Name        string `json:"name"`
 	Description string `json:"description"`
 	Status      string `json:"status"`
@@ -240,7 +240,7 @@ func (p *PermissionAlerts) DeList(data []byte, client ClientInterface) ([]Model,
 // PermissionAlert represents a permission alert.
 type PermissionAlert struct {
 	BaseModel
-	ID          string `json:"id"`
+	ID JSONID `json:"id"`
 	Type        string `json:"type"`
 	Title       string `json:"title"`
 	Description string `json:"description"`