Initial commit — 2048 terminal game

Plain TS + Vite, JetBrains Mono terminal aesthetic. Includes engine
(pure logic, direction normalization, tile tracking), animated UI
(CSS transitions + keyframes), keyboard/touch input, Dockerfile,
nginx config, docker-compose, and Gitea Actions CI workflow.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

package.json

@@ -0,0 +1,17 @@
+{
+  "name": "2048",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "test": "vitest run"
+  },
+  "devDependencies": {
+    "typescript": "~6.0.2",
+    "vite": "^8.1.1",
+    "vitest": "^4.1.9"
+  }
+}