fix(earth-controls): zoom-aware drag sensitivity and bump version to 0.22.13

docs/CHANGELOG.md

@@ -7,6 +7,27 @@ This project follows the repository versioning rule:
 - `feature` -> `+0.1.0`
 - `bugfix` -> `+0.0.1`
 
+## 0.22.13
+
+Released: 2026-04-07
+
+### Highlights
+
+- Added zoom-aware drag sensitivity on Earth interaction so drag distance naturally becomes finer when zoomed in and faster when zoomed out.
+- Shipped as a focused bugfix release (`+0.0.1`) to improve operation feel without changing existing data/visual layers.
+
+### Improved
+
+- Improved [main.js](/home/ray/dev/linkong/planet/frontend/public/earth/js/main.js) by replacing fixed drag rotation gain with a dynamic factor derived from current zoom level.
+- Improved [main.js](/home/ray/dev/linkong/planet/frontend/public/earth/js/main.js) by introducing `getDragRotationFactor()` so interaction tuning stays centralized instead of mixing formulas in pointer handlers.
+- Improved [constants.js](/home/ray/dev/linkong/planet/frontend/public/earth/js/constants.js) by adding explicit drag tuning knobs:
+  `dragRotationFactorBase`, `dragRotationScaleMin`, and `dragRotationScaleMax`.
+
+### Fixed
+
+- Fixed the previous interaction mismatch where drag traveled the same angular distance regardless of zoom level, making close-up inspection too jumpy and far-view browsing too slow.
+- Fixed maintainability drift where drag sensitivity had a hardcoded literal in logic code instead of configurable constants.
+
 ## 0.22.12
 
 Released: 2026-04-02