Initial scaffold: full-stack RackMapper application

Complete project scaffold with working auth, REST API, Prisma/SQLite
schema, Docker config, and React frontend for both Rack Planner and
Service Mapper modules. Both server and client pass TypeScript strict
mode with zero errors. Initial migration applied.

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

client/tailwind.config.ts

@@ -0,0 +1,18 @@
+import type { Config } from 'tailwindcss';
+
+export default {
+  content: ['./index.html', './src/**/*.{ts,tsx}'],
+  darkMode: 'class',
+  theme: {
+    extend: {
+      colors: {
+        // RackMapper palette aliases
+        surface: 'rgb(30 36 51)',   // slate-800 equivalent
+        border: 'rgb(51 65 85)',    // slate-700
+        accent: 'rgb(59 130 246)',  // blue-500
+        danger: 'rgb(239 68 68)',   // red-500
+      },
+    },
+  },
+  plugins: [],
+} satisfies Config;