feat(01-01): install shadcn/ui components and lucide-react icons

- components.json configured (Radix preset, CSS variables, @/ aliases)
- src/lib/utils.ts: cn() helper with clsx + tailwind-merge
- 10 shadcn/ui components: button, card, badge, progress, input, label,
  select, separator, table, textarea
- lucide-react@0.511 installed for iconography
- clsx, tailwind-merge, class-variance-authority added as dependencies

package.json

@@ -10,13 +10,22 @@
   },
   "dependencies": {
     "@hookform/resolvers": "^5.2.2",
+    "@radix-ui/react-label": "^2.1.8",
+    "@radix-ui/react-progress": "^1.1.8",
+    "@radix-ui/react-select": "^2.2.6",
+    "@radix-ui/react-separator": "^1.1.8",
+    "@radix-ui/react-slot": "^1.2.4",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
     "drizzle-orm": "^0.45.2",
+    "lucide-react": "^1.14.0",
     "nanoid": "^5.1.11",
     "next": "16.2.6",
     "postgres": "^3.4.9",
     "react": "19.2.4",
     "react-dom": "19.2.4",
     "react-hook-form": "^7.75.0",
+    "tailwind-merge": "^3.6.0",
     "zod": "^4.4.3"
   },
   "devDependencies": {