- Load `assets/images/ships-player.png` as a Phaser spritesheet via
`data/ship.json` (`texture`, `frameWidth`, `frameHeight`, `frame`)
- Add `artFacing` config; Ship applies a constant `artOffset` so heading
math is unchanged while the frame art (facing north) renders correctly
- Scale sprite as `(size * scale) / frameWidth` to preserve the 46 px world
hull size and collision radius regardless of frame dimensions
- Fall back to the built-in procedural dart when the sheet is missing or
fails to load, with a console warning in GameScene.create()
- Update ship-behavior tests to account for `artOffset` in heading checks
- Add source art (`ships-player.psd`, landed-ship reference) and a demo
video; document the new pattern in README and PROJECT_NOTES
