docs: Add missing changelog entry for registry refactor

Author: Claude Subagent

changes/3734.refactor.md

@@ -1,19 +1,5 @@
-# Refactor: Separate registry logic from ChunkGrid base class (fixes #3734)
+Separate registry logic from ChunkGrid base class
 
-## Summary
-The `ChunkGrid` base class previously contained registry logic in its `from_dict` class method, which was responsible for dispatching to the appropriate subclass (e.g., `RegularChunkGrid`) based on the configuration. This violated the separation of concerns principle.
-
-## Changes
-1. **Removed `from_dict` from `ChunkGrid` base class**: The base class no longer handles the dispatch logic.
-2. **Created `parse_chunk_grid` function**: A new module-level function now handles the deserialization and dispatch to appropriate subclasses. This follows the same pattern as other similar functions in the codebase (e.g., `parse_chunk_key_encoding`).
-3. **Updated `ArrayV3Metadata`**: The metadata class now uses `parse_chunk_grid` instead of `ChunkGrid.from_dict`.
-
-## Benefits
-- **Separation of concerns**: The base class is now a pure data structure without registry responsibilities.
-- **Consistency**: The pattern now matches other similar types in the codebase (e.g., chunk key encodings).
-- **Extensibility**: New chunk grid types can be registered without modifying the base class.
-- **Clearer intent**: The registry logic is now explicit via the `parse_chunk_grid` function.
-
-## API Changes
-- **Breaking**: Code that directly called `ChunkGrid.from_dict()` should now call `parse_chunk_grid()` instead.
-- **Non-breaking**: Internal uses within the library have been updated. Public API users may need to update if they were directly using `ChunkGrid.from_dict()`.
+- Move from_dict dispatch logic to parse_chunk_grid function
+- ChunkGrid is now a pure data structure without registry responsibilities
+- Improves separation of concerns and testability