修正：UI 優化與使用者角色分配改為單選

package-lock.json

@@ -14,6 +14,7 @@
                 "@radix-ui/react-dropdown-menu": "^2.1.16",
                 "@radix-ui/react-label": "^2.1.8",
                 "@radix-ui/react-popover": "^1.1.15",
+                "@radix-ui/react-radio-group": "^1.3.8",
                 "@radix-ui/react-scroll-area": "^1.2.10",
                 "@radix-ui/react-select": "^2.2.6",
                 "@radix-ui/react-slot": "^1.2.4",
@@ -1514,6 +1515,38 @@
                 }
             }
         },
+        "node_modules/@radix-ui/react-radio-group": {
+            "version": "1.3.8",
+            "resolved": "https://registry.npmjs.org/@radix-ui/react-radio-group/-/react-radio-group-1.3.8.tgz",
+            "integrity": "sha512-VBKYIYImA5zsxACdisNQ3BjCBfmbGH3kQlnFVqlWU4tXwjy7cGX8ta80BcrO+WJXIn5iBylEH3K6ZTlee//lgQ==",
+            "license": "MIT",
+            "dependencies": {
+                "@radix-ui/primitive": "1.1.3",
+                "@radix-ui/react-compose-refs": "1.1.2",
+                "@radix-ui/react-context": "1.1.2",
+                "@radix-ui/react-direction": "1.1.1",
+                "@radix-ui/react-presence": "1.1.5",
+                "@radix-ui/react-primitive": "2.1.3",
+                "@radix-ui/react-roving-focus": "1.1.11",
+                "@radix-ui/react-use-controllable-state": "1.2.2",
+                "@radix-ui/react-use-previous": "1.1.1",
+                "@radix-ui/react-use-size": "1.1.1"
+            },
+            "peerDependencies": {
+                "@types/react": "*",
+                "@types/react-dom": "*",
+                "react": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc",
+                "react-dom": "^16.8 || ^17.0 || ^18.0 || ^19.0 || ^19.0.0-rc"
+            },
+            "peerDependenciesMeta": {
+                "@types/react": {
+                    "optional": true
+                },
+                "@types/react-dom": {
+                    "optional": true
+                }
+            }
+        },
         "node_modules/@radix-ui/react-roving-focus": {
             "version": "1.1.11",
             "resolved": "https://registry.npmjs.org/@radix-ui/react-roving-focus/-/react-roving-focus-1.1.11.tgz",