Move user properties (like session keys) to their own table

core/agents/lastfm/session_keys.go

@@ -0,0 +1,28 @@
+package lastfm
+
+import (
+	"context"
+
+	"github.com/navidrome/navidrome/model"
+)
+
+const (
+	sessionKeyProperty = "LastFMSessionKey"
+)
+
+// sessionKeys is a simple wrapper around the UserPropsRepository
+type sessionKeys struct {
+	ds model.DataStore
+}
+
+func (sk *sessionKeys) put(ctx context.Context, sessionKey string) error {
+	return sk.ds.UserProps(ctx).Put(sessionKeyProperty, sessionKey)
+}
+
+func (sk *sessionKeys) get(ctx context.Context) (string, error) {
+	return sk.ds.UserProps(ctx).Get(sessionKeyProperty)
+}
+
+func (sk *sessionKeys) delete(ctx context.Context) error {
+	return sk.ds.UserProps(ctx).Delete(sessionKeyProperty)
+}