27.1.0-rc.1

• Added: Push service over MQTT with subscribe, setForeground and onOpen/onClose/onError, plus PushSubscription.update and unsubscribe
• Added: Client.setPushEndpoint and Client.setPushClientId to configure the push broker, and the Topic helper for building topics
• Added: Analytics.createEvent for sending tracking events
• Added: AnalyticsTracking for app-lifecycle events and screenView, and AnalyticsObserver for automatic route tracking
• Added: Apps service for apps, installations, keys, secrets and scopes, and Oauth2 service for authorize, token, device flow, grants and revoke
• Added: Avatars.updatePhoto and Avatars.deletePhoto, and the Account model
• Added: optional total on Account.listSessions, the Locale.list* methods and listTransactions across the database services
• Added: optional current on Account.deleteSessions, optional duration on Account.createEmailPasswordSession, and OAuthProvider.webflow
• Updated: push adds the mqtt5_client, flutter_background_service and flutter_local_notifications dependencies and an Android plugin; Android builds need core library desugaring
• Fixed: chunked uploads send the filename derived from InputFile(path:) instead of being rejected as empty
• Fixed: plain-text responses are decoded as UTF-8 regardless of the declared charset
• Fixed: multipart requests JSON-encode Map fields