feat: user sync stream (#16862)

* refactor: user entity

* chore: rebase fixes

* refactor: remove int user Id

* refactor: migrate store userId from int to string

* refactor: rename uid to id

* feat: drift

* pr feedback

* refactor: move common overrides to mixin

* refactor: remove int user Id

* refactor: migrate store userId from int to string

* refactor: rename uid to id

* feat: user & partner sync stream

* pr changes

* refactor: sync service and add tests

* chore: remove generated change

* chore: move sync model

* rebase: convert string ids to byte uuids

* rebase

* add processing logs

* batch db calls

* rewrite isolate manager

* rewrite with worker_manager

* misc fixes

* add sync order test

---------

Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Alex <alex.tran1502@gmail.com>

mobile/lib/providers/infrastructure/cancel.provider.dart

@@ -0,0 +1,12 @@
+import 'package:hooks_riverpod/hooks_riverpod.dart';
+
+/// Provider holding a boolean function that returns true when cancellation is requested.
+/// A computation running in the isolate uses the function to implement cooperative cancellation.
+final cancellationProvider = Provider<bool Function()>(
+  // This will be overridden in the isolate's container.
+  // Throwing ensures it's not used without an override.
+  (ref) => throw UnimplementedError(
+    "cancellationProvider must be overridden in the isolate's ProviderContainer and not to be used in the root isolate",
+  ),
+  name: 'cancellationProvider',
+);