Feat: 세션 유지 컴포넌트 추가 및 주석 디자인 다크테마 적용

package-lock.json

@@ -9,6 +9,7 @@
       "version": "0.1.0",
       "dependencies": {
         "@hookform/resolvers": "^5.2.2",
+        "@radix-ui/react-alert-dialog": "^1.1.15",
         "@radix-ui/react-checkbox": "^1.3.3",
         "@radix-ui/react-dropdown-menu": "^2.1.16",
         "@radix-ui/react-label": "^2.1.8",
@@ -25,10 +26,12 @@
         "framer-motion": "^12.31.0",
         "lucide-react": "^0.563.0",
         "next": "16.1.6",
+        "next-themes": "^0.4.6",
         "radix-ui": "^1.4.3",
         "react": "19.2.3",
         "react-dom": "19.2.3",
         "react-hook-form": "^7.71.1",
+        "sonner": "^2.0.7",
         "tailwind-merge": "^3.4.0",
         "tailwindcss-animate": "^1.0.7",
         "tw-animate-css": "^1.4.0",
@@ -8507,6 +8510,16 @@
         }
       }
     },
+    "node_modules/next-themes": {
+      "version": "0.4.6",
+      "resolved": "https://registry.npmjs.org/next-themes/-/next-themes-0.4.6.tgz",
+      "integrity": "sha512-pZvgD5L0IEvX5/9GWyHMf3m8BKiVQwsCMHfoFosXtXBMnaS0ZnIJ9ST4b4NqLVKDEm8QBxoNNGNaBv2JNF6XNA==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^16.8 || ^17 || ^18 || ^19 || ^19.0.0-rc",
+        "react-dom": "^16.8 || ^17 || ^18 || ^19 || ^19.0.0-rc"
+      }
+    },
     "node_modules/next/node_modules/postcss": {
       "version": "8.4.31",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.31.tgz",
@@ -9618,6 +9631,16 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/sonner": {
+      "version": "2.0.7",
+      "resolved": "https://registry.npmjs.org/sonner/-/sonner-2.0.7.tgz",
+      "integrity": "sha512-W6ZN4p58k8aDKA4XPcx2hpIQXBRAgyiWVkYhT7CvK6D3iAu7xjvVyhQHg2/iaKJZ1XVJ4r7XuwGL+WGEK37i9w==",
+      "license": "MIT",
+      "peerDependencies": {
+        "react": "^18.0.0 || ^19.0.0 || ^19.0.0-rc",
+        "react-dom": "^18.0.0 || ^19.0.0 || ^19.0.0-rc"
+      }
+    },
     "node_modules/source-map-js": {
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",