📝 update CHANGELOG for Issue #5 zoom-to-mouse

CHANGELOG.md

@@ -20,8 +20,12 @@ Format follows [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Villagers are now called **Nisse** throughout the UI (panel, controls hint, stockpile display, context menu, spawn message)
 
 ### Added
-- Scroll wheel now zooms toward the mouse cursor position instead of the screen center
+- Scroll wheel zooms toward the mouse cursor position (zoom-to-mouse), correctly accounting for Phaser's center-based zoom model
 - Middle mouse button held: pan the camera by dragging
+- Test environment at `/test.html` with `ZoomTestScene` (Phaser default) and `ZoomMouseScene` (zoom-to-mouse) for camera behaviour analysis; file-logging via Vite middleware to `game-test.log`
+
+### Fixed
+- `getCenterWorld()` in `CameraSystem` returned wrong world coordinates at zoom ≠ 1; corrected from `scrollX + width/(2·zoom)` to `scrollX + width/2`
 - Right-click context menu: suppresses browser default, shows Build and Nisse actions in the game world
 - Initial project setup: Phaser 3 + TypeScript + Vite
 - Core scenes: `BootScene`, `GameScene`, `UIScene`