Initial commit: rack, a homelab idle game

Core loop (hardware tiers, deployable services, upgrades, random events,
prestige), quirks, host nicknames, an ASCII rack view, in-app help/
changelog, and a Vitest suite covering engine logic and data balance.

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

vite.config.ts

@@ -0,0 +1,12 @@
+/// <reference types="vitest/config" />
+import { defineConfig } from 'vite'
+
+// Avoid the usual 5173/4173 defaults - those ports are claimed by sibling
+// projects on this machine.
+export default defineConfig({
+  server: { port: 5677, strictPort: true },
+  preview: { port: 4587, strictPort: true },
+  test: {
+    environment: 'node',
+  },
+})