Initial project skeleton

Haskell backend: Orb HTTP framework, JSON-only API
Frontend: Mithril.js SPA with TypeScript, Neo Brutalism CSS
Dockerized build via flipstone/haskell-tools image

Routes:
  GET /api/health — health check

Build: ./hs stack build
Test:  ./hs stack test
Run:   ./scripts/run

frontend/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "sis-frontend",
+  "version": "0.1.0",
+  "private": true,
+  "description": "Sis chore tracker SPA frontend",
+  "scripts": {
+    "build": "tsc && cp -r public/* dist/",
+    "dev": "tsc --watch",
+    "serve": "npx serve dist"
+  },
+  "dependencies": {
+    "mithril": "^2.2.13"
+  },
+  "devDependencies": {
+    "@types/mithril": "^2.2.7",
+    "typescript": "^5.7.0",
+    "serve": "^14.2.0"
+  }
+}