[leoafarias]

Superseded by #224 (release/2.0). Annotations in ack, unified @Schemable, and primary-constructor support are already included in the consolidated implementation; 2.0 also replaces the older compatibility and code-generation paths. Further release fixes are in the stack ending at #239. This PR is retained for historical context.

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Summary

Ack models can use @Schemable() with Dart primary constructors. The generator infers nested schemas from field types and generates JSON helpers, typed copyWith, descriptions, and value equality.

• Move annotations and generator support markers into package:ack. Keep ack_annotations as compatibility re-exports.
• Make @Schemable() canonical and deprecate @AckInfer() and @AckModel(). Remove the unreleased private redirecting-factory implementation. Ordinary generative constructors remain supported.
• Upgrade to Analyzer 13.3 and dart_style 3.1.13. Fix the generated JSON marker and required capture-map decoding. Regenerate the examples.

Requirements

ack_generator now requires Dart 3.13. Core ack keeps its Dart 3.9 minimum. The repository pins Flutter 3.47.5 / Dart 3.13.4. CI checks the runtime and generator SDK minimums separately.

This PR remains stacked on leoafarias/ack-annotation-dx.

Validation

• Workspace dart analyze --fatal-infos, formatting, and git diff --check passed.
• Core runtime: 1,311 tests passed. Root tooling: 61 tests passed.
• Generator: 345 tests passed in the full run. Three stale fixtures were corrected; all four tests in the focused rerun passed.
• Real primary-constructor builds cover nested schemas, descriptions, constraints, defaults, JSON conversion, typed copyWith, and captured properties.
• The guide example and committed examples build, analyze, and regenerate deterministically.