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Remi Rousselet 01ed6911a4 Rework mutations (#4170)
## Related Issues

Mutations are reworked to be independent from notifiers and do not
require code-gen.

## Checklist

Before you create this PR confirm that it meets all requirements listed
below by checking the relevant checkboxes (`[x]`).

- [x] I have updated the `CHANGELOG.md` of the relevant packages.
      Changelog files must be edited under the form:

  ```md
  ## Unreleased fix/major/minor

  - Description of your change. (thanks to @yourGithubId)
  ```

- [x] If this contains new features or behavior changes,
      I have updated the documentation to match those changes.


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Introduced a new mutation system that no longer requires code
generation, enabling UI to react to side-effects with loading, success,
and error states.
- Added experimental mutation APIs to Riverpod, Flutter Riverpod, and
Hooks Riverpod packages for enhanced state management.
- Included new mixins and interfaces to simplify creating custom
provider listenables.
- Added widget test helpers and improved mutation state matchers for
testing.

- **Bug Fixes**
- Enhanced error handling and reporting during mutation lifecycle
events.
- Fixed issues with Notifier lifecycle and provider observer context
related to mutations.

- **Refactor**
- Removed legacy mutation annotation logic and related code from
analyzer, generator, and annotation packages.
- Simplified generated provider classes by removing explicit element
creation overrides.
- Updated internal APIs to replace `MutationContext` with direct
`Mutation` usage and adjusted related observer interfaces.

- **Documentation**
- Revised mutation feature documentation to reflect new API design
without code generation.
- Corrected migration guide links and updated changelogs to reflect
annotation and mutation system changes.

- **Tests**
- Added extensive mutation tests covering state transitions,
concurrency, reset behavior, and observer notifications.
- Improved test utilities with new matchers for mutation states and
context.

- **Chores**
- Removed obsolete mutation-related test files, templates, and internal
annotation handling to maintain codebase clarity.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2025-06-20 01:23:40 +02:00
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2025-02-28 16:29:20 +01:00
2025-02-28 16:29:20 +01:00
2025-02-28 16:29:20 +01:00