Scaffold monorepo: engine, server, and web packages

npm workspaces with three TypeScript packages: @wizwar/engine (pure
game logic), @wizwar/server (Node websocket authority), @wizwar/web
(Svelte 5 + Vite client). Server handshake and client build verified.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/web/package.json

@@ -0,0 +1,22 @@
+{
+  "name": "@wizwar/web",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vite build",
+    "preview": "vite preview",
+    "typecheck": "svelte-check --tsconfig ./tsconfig.json"
+  },
+  "dependencies": {
+    "@wizwar/engine": "*"
+  },
+  "devDependencies": {
+    "@sveltejs/vite-plugin-svelte": "^4.0.0",
+    "svelte": "^5.0.0",
+    "svelte-check": "^4.0.0",
+    "typescript": "^5.6.0",
+    "vite": "^5.4.0"
+  }
+}