refactor: split modules and harden scraping workflows

internal/repository/playlist_repository.go

@@ -0,0 +1,25 @@
+package repository
+
+import (
+	"context"
+
+	"gorm.io/gorm"
+
+	"github.com/ShukeBta/MediaStationGo/internal/model"
+)
+
+// PlaylistRepository persists model.Playlist + PlaylistItem.
+type PlaylistRepository struct{ db *gorm.DB }
+
+// Create inserts a new playlist.
+func (r *PlaylistRepository) Create(ctx context.Context, p *model.Playlist) error {
+	return r.db.WithContext(ctx).Create(p).Error
+}
+
+// ListByUser returns playlists owned by a user.
+func (r *PlaylistRepository) ListByUser(ctx context.Context, userID string) ([]model.Playlist, error) {
+	var rows []model.Playlist
+	err := r.db.WithContext(ctx).Where("user_id = ?", userID).
+		Order("created_at desc").Find(&rows).Error
+	return rows, err
+}