fix(frontend): restrict management controls to admins

frontend/src/shell/AppShell.database-management.test.tsx

@@ -22,9 +22,9 @@ beforeEach(() => {
   setAuthState({
     issuer: "test",
     subject: "test",
-    roles: ["user"],
-    permissions: ["session.use", "workspace.manage"],
-    isAdmin: false,
+    roles: ["admin"],
+    permissions: ["session.use", "workspace.manage", "workspace.secrets.manage", "pi.manage"],
+    isAdmin: true,
     csrfToken: null,
     session: null,
   });
@@ -37,7 +37,7 @@ beforeEach(() => {
       issuer: "test",
       subject: "test",
       displayName: "Test",
-      isAdmin: false,
+      isAdmin: true,
     })),
     http.get("/api/sessions", () => HttpResponse.json([])),
     http.get("/api/settings", () => HttpResponse.json({
@@ -122,7 +122,7 @@ test("keeps a live core session connected and returns when that session is opene
   expect(FakeEventSource.instances).toHaveLength(1);
 });
 
-test("shows database management entry to authenticated users without workspace management permission", () => {
+test("hides all management entries from non-admin users", () => {
   clearAuthState();
   setAuthState({
     issuer: "test",
@@ -136,5 +136,7 @@ test("shows database management entry to authenticated users without workspace m
 
   renderShell();
 
-  expect(screen.getByRole("button", { name: "Database management" })).toBeInTheDocument();
+  expect(screen.queryByRole("button", { name: "Workspace management" })).not.toBeInTheDocument();
+  expect(screen.queryByRole("button", { name: "Database management" })).not.toBeInTheDocument();
+  expect(screen.queryByRole("button", { name: "Pi management" })).not.toBeInTheDocument();
 });