Initial commit: Retro 90s flight simulator MVP

Loading screen, main menu, 3D flight sim with CRT post-processing,
procedural terrain, airport with buildings, low-poly aircraft,
flight physics, HUD instruments, and sound.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

package.json

@@ -0,0 +1,16 @@
+{
+  "name": "retro-flight-sim",
+  "version": "0.1.0",
+  "description": "Early 90s Amiga/DOS-style 3D flight simulator",
+  "type": "module",
+  "dependencies": {
+    "three": "^0.160.0"
+  },
+  "devDependencies": {
+    "vite": "^5.0.0"
+  },
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build"
+  }
+}