Fix tailwind purging and improve HMR

frontend/tailwind.config.js

@@ -7,6 +7,20 @@ module.exports = {
     './app/**/*.{ts,tsx}',
     './src/**/*.{ts,tsx}',
   ],
+  safelist: [
+    'xl:hidden',
+    'xl:relative',
+    'xl:inset-auto',
+    'xl:z-auto',
+    'xl:h-full',
+    'xl:w-[800px]',
+    'xl:flex',
+    'xl:flex-1',
+    'xl:min-w-0',
+    'xl:overflow-y-auto',
+    'xl:opacity-100',
+    'xl:pointer-events-auto',
+  ],
   prefix: "",
   theme: {
     container: {

package.json

@@ -2,12 +2,12 @@
   "name": "vibe-kanban",
   "private": true,
   "scripts": {
-    "dev": "concurrently \"cargo watch -x 'run --manifest-path backend/Cargo.toml'\" \"npm run frontend:dev\"",
+    "dev": "concurrently \"cargo watch -w backend -x 'run --manifest-path backend/Cargo.toml'\" \"npm run frontend:dev\"",
     "build": "npm run frontend:build && cargo build --release --manifest-path backend/Cargo.toml",
     "build:single": "npm run frontend:build && cargo build --release --manifest-path backend/Cargo.toml",
     "frontend:dev": "cd frontend && npm run dev",
     "frontend:build": "cd frontend && npm run build",
-    "backend:dev": "cargo watch -x 'run --manifest-path backend/Cargo.toml'",
+    "backend:dev": "cargo watch -w backend -x 'run --manifest-path backend/Cargo.toml'",
     "backend:build": "cargo build --release --manifest-path backend/Cargo.toml",
     "backend:run": "cargo run --manifest-path backend/Cargo.toml",
     "backend:test": "cargo test --lib",