feat: add layout and sidebar components with navigation structure

chore: update dependencies and configuration for Tailwind CSS
docs: create components.json and skills-lock.json for project structure

frontend/package.json

@@ -10,14 +10,18 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@radix-ui/react-avatar": "^1.1.11",
     "@radix-ui/react-checkbox": "^1.3.3",
+    "@radix-ui/react-collapsible": "^1.1.12",
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-dropdown-menu": "^2.1.16",
     "@radix-ui/react-label": "^2.1.8",
     "@radix-ui/react-scroll-area": "^1.2.10",
     "@radix-ui/react-select": "^2.2.6",
+    "@radix-ui/react-separator": "^1.1.8",
     "@radix-ui/react-tabs": "^1.1.13",
     "@radix-ui/react-toast": "^1.2.15",
+    "@radix-ui/react-tooltip": "^1.2.8",
     "@tanstack/react-form": "^1.28.3",
     "@tanstack/react-query": "^5.90.21",
     "@tanstack/react-router": "^1.162.2",
@@ -32,6 +36,7 @@
     "@eslint/js": "^9.39.1",
     "@radix-ui/react-slot": "^1.2.4",
     "@tailwindcss/postcss": "^4.2.0",
+    "@tailwindcss/vite": "^4.2.0",
     "@types/node": "^24.10.1",
     "@types/react": "^19.2.7",
     "@types/react-dom": "^19.2.3",