Phase 0: Project setup for agent-driven development

- Phaser 3 + bitECS 0.4 + TypeScript + Vite stack
- BootScene with title screen
- 6 cursor rules (project context, agent workflow, ECS, chemistry, Phaser, data)
- Vitest configured with happy-dom
- GDD, engine analysis, implementation plan, progress tracking

Co-authored-by: Cursor <cursoragent@cursor.com>

src/config.ts

@@ -0,0 +1,29 @@
+import Phaser from 'phaser';
+import { BootScene } from './scenes/BootScene';
+
+export const GAME_WIDTH = 1280;
+export const GAME_HEIGHT = 720;
+
+export const gameConfig: Phaser.Types.Core.GameConfig = {
+  type: Phaser.AUTO,
+  width: GAME_WIDTH,
+  height: GAME_HEIGHT,
+  backgroundColor: '#0a0a0a',
+  parent: document.body,
+  scene: [BootScene],
+  physics: {
+    default: 'arcade',
+    arcade: {
+      gravity: { x: 0, y: 0 },
+      debug: false,
+    },
+  },
+  scale: {
+    mode: Phaser.Scale.FIT,
+    autoCenter: Phaser.Scale.CENTER_BOTH,
+  },
+  render: {
+    pixelArt: true,
+    antialias: false,
+  },
+};