Initial commit: installable PWA hello world

React + TypeScript + Tailwind v4 + shadcn/ui frontend (client), Express +
better-sqlite3 backend (server) in a pnpm workspace. Includes vite-plugin-pwa
manifest, service worker, and iOS install meta tags. GET /api/hello increments a
visit counter in SQLite; backend serves the built client in production.

client/tsconfig.json

@@ -0,0 +1,12 @@
+{
+  "files": [],
+  "references": [
+    { "path": "./tsconfig.app.json" },
+    { "path": "./tsconfig.node.json" }
+  ],
+  "compilerOptions": {
+    "paths": {
+      "@/*": ["./src/*"]
+    }
+  }
+}