feat(adminfront): implement user role management and cleanup tenant list UI

- Add user role management (view, edit, bulk) in UserListPage, UserDetailPage, and UserCreatePage.
- Restrict role modification to super_admin only.
- Remove redundant action columns from tenant-related lists (TenantListPage, TenantSubTenantsPage, TenantUsersPage, TenantAdminsAndOwnersTab).
- Improve navigation by making table rows clickable where actions were removed.

adminfront/src/features/users/UserCreatePage.tsx

@@ -152,6 +152,7 @@ function UserCreatePage() {
       grade: "",
       position: "",
       jobTitle: "",
+      role: "user",
       metadata: {},
     },
   });
@@ -366,6 +367,7 @@ function UserCreatePage() {
       password: data.password,
       name: data.name,
       phone: data.phone,
+      role: data.role,
       metadata,
     };
 
@@ -644,6 +646,37 @@ function UserCreatePage() {
               </div>
             </div>
 
+            <div className="space-y-2">
+              <Label htmlFor="role">
+                {t("ui.admin.users.create.form.role", "역할")}
+              </Label>
+              <select
+                id="role"
+                className="flex h-9 w-full rounded-md border border-input bg-transparent px-3 py-1 text-sm shadow-sm transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50"
+                {...register("role")}
+                disabled={profile?.role !== "super_admin"}
+              >
+                <option value="super_admin">
+                  {t("ui.admin.role.super_admin", "시스템 관리자")}
+                </option>
+                <option value="tenant_admin">
+                  {t("ui.admin.role.tenant_admin", "테넌트 관리자")}
+                </option>
+                <option value="rp_admin">
+                  {t("ui.admin.role.rp_admin", "서비스 관리자")}
+                </option>
+                <option value="user">
+                  {t("ui.admin.role.user", "일반 사용자")}
+                </option>
+              </select>
+              <p className="text-xs text-muted-foreground">
+                {t(
+                  "msg.admin.users.create.form.role_help",
+                  "시스템 접근 권한을 결정합니다.",
+                )}
+              </p>
+            </div>
+
             <Tabs value={userType} onValueChange={handleUserTypeChange}>
               <TabsList className="flex h-auto w-full justify-start rounded-none border-b bg-transparent p-0 text-foreground">
                 <TabsTrigger