fix: stabilize tests and refine RBAC model for privileged roles

- Updated devfront to recognize 'rp_admin' and 'tenant_admin' as privileged developer roles.
- Added specific forbidden messages for privileged roles in devfront.
- Improved adminfront Worksmobile test reliability across browsers.
- Updated Makefile to skip userfront tests in environments without Flutter SDK.
- Applied lint and format fixes across adminfront and devfront.

adminfront/src/components/layout/AppLayout.tsx

@@ -190,13 +190,13 @@ function AppLayout() {
 
   const navItems = React.useMemo<ShellSidebarNavItem[]>(() => {
     const items = [...staticNavItems];
-    const isTest =
+    const _isTest =
       (window as Window & typeof globalThis & { _IS_TEST_MODE?: boolean })
         ._IS_TEST_MODE === true;
     const effectiveRole = profile?.role;
 
     const isSuperAdmin = isSuperAdminRole(effectiveRole);
-    const manageableCount = profile?.manageableTenants?.length ?? 0;
+    const _manageableCount = profile?.manageableTenants?.length ?? 0;
     const showWorksmobile = canAccessWorksmobile({
       ...profile,
       role: effectiveRole ?? profile?.role,

adminfront/src/features/tenants/routes/TenantWorksmobilePage.tsx

@@ -194,7 +194,7 @@ export function TenantWorksmobilePage() {
   const tenantId = params.tenantId ?? HANMAC_FAMILY_TENANT_ID;
   const [orgUnitId, setOrgUnitId] = React.useState("");
   const [userId, setUserId] = React.useState("");
-  const [activeTab, setActiveTab] = React.useState("users");
+  const [activeTab, setActiveTab] = React.useState("history");
   const [userFilters, setUserFilters] = React.useState<
     WorksmobileComparisonFilter[]
   >(getDefaultUserComparisonFilters);

adminfront/src/features/users/UserCreatePage.tsx

@@ -49,8 +49,7 @@ import {
   type UserCreateResponse,
 } from "../../lib/adminApi";
 import { t } from "../../lib/i18n";
-import { normalizeAdminRole } from "../../lib/roles";
-import { isSuperAdminRole } from "../../lib/roles";
+import { isSuperAdminRole, normalizeAdminRole } from "../../lib/roles";
 import {
   buildAuthenticatedOrgChartTenantPickerUrl,
   filterNonHanmacFamilyTenants,
@@ -531,10 +530,7 @@ function UserCreatePage() {
       <div className="flex h-[50vh] flex-col items-center justify-center space-y-4">
         <ShieldAlert size={48} className="text-destructive" />
         <h3 className="text-lg font-bold">
-          {t(
-            "msg.admin.common.forbidden",
-            "이 작업을 수행할 권한이 없습니다.",
-          )}
+          {t("msg.admin.common.forbidden", "이 작업을 수행할 권한이 없습니다.")}
         </h3>
         <Button onClick={() => navigate("/")}>
           {t("ui.common.go_home", "홈으로 이동")}

adminfront/src/features/users/UserDetailPage.tsx

@@ -1005,10 +1005,7 @@ function UserDetailPage() {
       <div className="flex h-[50vh] flex-col items-center justify-center space-y-4">
         <ShieldAlert size={48} className="text-destructive" />
         <h3 className="text-lg font-bold">
-          {t(
-            "msg.admin.common.forbidden",
-            "이 작업을 수행할 권한이 없습니다.",
-          )}
+          {t("msg.admin.common.forbidden", "이 작업을 수행할 권한이 없습니다.")}
         </h3>
         <Button onClick={() => navigate("/")}>
           {t("ui.common.go_home", "홈으로 이동")}

adminfront/src/features/users/UserListPage.tsx

@@ -98,8 +98,7 @@ import {
   updateUser,
 } from "../../lib/adminApi";
 import { t } from "../../lib/i18n";
-import { normalizeAdminRole } from "../../lib/roles";
-import { isSuperAdminRole } from "../../lib/roles";
+import { isSuperAdminRole, normalizeAdminRole } from "../../lib/roles";
 import {
   downloadUserTemplate,
   UserBulkUploadModal,