ci: add changeset

Author: doasync

.changeset/the-inevitable-architecture.md

@@ -1,8 +1,24 @@
 ---
-'@effector/model': patch
-'@effector-model/core-experimental': minor
-'@effector/model-react': patch
+'@effector/model': major
+'@effector-model/core-experimental': major
+'@effector/model-react': major
 ---
 
-Refactor internal types and lint fixes.
-Add lens feature to core-experimental.
+# The Inevitable Architecture: Trait-Based Composition & Predictable Systems
+
+This major update introduces a paradigm shift in how models are composed and consumed, moving from rigid structures to a flexible, trait-based system.
+
+## Key Changes
+
+- **Trait-Based Model Composition**: Introduced the `model()` API with support for Facets (traits) and Variants (conditional logic).
+- **Deep Reactivity with Lenses**: New `Lens` concept and `select` API for type-safe, deep reactive access to model state.
+- **Predictable System Architecture**:
+  - Hardened development loop with Vitest console interceptors.
+  - Strict ESLint rules to prevent common pitfalls (e.g., passing Lenses to `useUnit`).
+  - Enhanced runtime validation and API guardrails in `useLens` and `select`.
+- **New Experimental Package**: `@effector-model/core-experimental` houses the next-generation model system.
+- **Advanced Features**:
+  - Multi-restaurant support and item grouping in the cart.
+  - Union API for handling heterogeneous product types.
+  - `serialize` utility for model snapshots.
+- **Refactorings**: Updated `@effector/model` and `@effector/model-react` to support the new Lens-based architecture and improved type safety.