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.

devfront/src/features/audit/AuditLogsPage.test.tsx

@@ -1,6 +1,6 @@
-import { act } from "react-dom/test-utils";
-import { createRoot, type Root } from "react-dom/client";
 import { QueryClient, QueryClientProvider } from "@tanstack/react-query";
+import { createRoot, type Root } from "react-dom/client";
+import { act } from "react-dom/test-utils";
 import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
 import AuditLogsPage from "./AuditLogsPage";
 

devfront/src/features/audit/AuditLogsPage.tsx

@@ -8,9 +8,8 @@ import { parseAuditDetails } from "../../../../common/core/audit";
 import { AuditLogTable } from "../../../../common/core/components/audit";
 import { PageHeader } from "../../../../common/core/components/page";
 import { SearchFilterBar } from "../../../../common/ui/search-filter-bar";
-import { ForbiddenMessage } from "../../components/common/ForbiddenMessage";
 import { DeveloperAccessRequestCard } from "../../components/common/DeveloperAccessRequestCard";
-import { useDeveloperAccessGate } from "../developer-access/developerAccessGate";
+import { ForbiddenMessage } from "../../components/common/ForbiddenMessage";
 import { Badge } from "../../components/ui/badge";
 import { Button } from "../../components/ui/button";
 import {
@@ -26,6 +25,7 @@ import { fetchDevAuditLogs } from "../../lib/devApi";
 import { t } from "../../lib/i18n";
 import { resolveProfileRole } from "../../lib/role";
 import { fetchMe } from "../auth/authApi";
+import { useDeveloperAccessGate } from "../developer-access/developerAccessGate";
 
 function toCsv(logs: DevAuditLog[]) {
   const header = [