diff --git a/workbench-ui/src/app/App.tsx b/workbench-ui/src/app/App.tsx
index accd0a93..2fa443ed 100644
--- a/workbench-ui/src/app/App.tsx
+++ b/workbench-ui/src/app/App.tsx
@@ -122,7 +122,6 @@ export function App() {
                 element={ROUTE_ELEMENTS[route.id]}
               />
             ))}
-            <Route path="apple-uma" element={ROUTE_ELEMENTS["apple-uma"]} />
           </Route>
           <Route path="/preview" element={lazyRoute(<PreviewPage />)} />
         </Routes>
diff --git a/workbench-ui/src/app/apple-uma/AppleUmaReportRoute.test.tsx b/workbench-ui/src/app/apple-uma/AppleUmaReportRoute.test.tsx
new file mode 100644
index 00000000..4f7a4ea3
--- /dev/null
+++ b/workbench-ui/src/app/apple-uma/AppleUmaReportRoute.test.tsx
@@ -0,0 +1,174 @@
+import { render, screen } from "@testing-library/react";
+import { QueryClientProvider } from "@tanstack/react-query";
+import { MemoryRouter } from "react-router-dom";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { createTestQueryClient } from "../../test/createTestQueryClient";
+import {
+  AppleUmaReportRoute,
+  APPLE_UMA_LOADING,
+  APPLE_UMA_ABSENCE_STATEMENT,
+  APPLE_UMA_ABSENCE_ACTION,
+} from "./AppleUmaReportRoute";
+
+const GENERATED_AT = "2026-06-14T00:00:00Z";
+
+function stubFetch(data: unknown) {
+  vi.stubGlobal(
+    "fetch",
+    vi.fn(() =>
+      Promise.resolve({
+        json: async () => ({ ok: true, generated_at: GENERATED_AT, data }),
+      }),
+    ),
+  );
+}
+
+function stubFetchPending() {
+  vi.stubGlobal(
+    "fetch",
+    vi.fn(() => new Promise<never>(() => {})),
+  );
+}
+
+function renderRoute() {
+  return render(
+    <QueryClientProvider client={createTestQueryClient()}>
+      <MemoryRouter initialEntries={["/apple-uma"]}>
+        <AppleUmaReportRoute />
+      </MemoryRouter>
+    </QueryClientProvider>,
+  );
+}
+
+const STALE_REPORT = {
+  read_only: true,
+  report_id: "apple_uma_mechanical_sympathy_latest",
+  source_path: "reports/apple_uma.json",
+  source_digest: "sha256:1234567890abcdef",
+  benchmark_name: "Apple Silicon UMA Mechanical Sympathy",
+  benchmark_version: "1.0.0",
+  metadata: {},
+  backend_status: { native_status: false, using_rust: true },
+  tracks: {
+    available: ["rust"],
+    required: ["mlx_exact_cga_recall"],
+    missing_required: ["mlx_exact_cga_recall"],
+    mlx_exact_cga_recall: {
+      present: false,
+      skipped: true,
+      reason: "No MLX semantic-backend claim.",
+      serving_authorized: false,
+      case_count: 0,
+      all_cases_parity_pass: false,
+      cases: [],
+    },
+  },
+  copy_boundaries: [],
+  non_claims: ["No MLX semantic-backend claim."],
+  claim_safety: {
+    safe_claims: [],
+    rust_backend_notes: [],
+    known_copy_paths: [],
+    known_zero_copy_input_paths: [],
+    future_work: [],
+  },
+};
+
+const MLX_PRESENT_REPORT = {
+  read_only: true,
+  report_id: "apple_uma_mechanical_sympathy_latest",
+  source_path: "reports/apple_uma.json",
+  source_digest: "sha256:1234567890abcdef",
+  benchmark_name: "Apple Silicon UMA Mechanical Sympathy",
+  benchmark_version: "1.0.0",
+  metadata: {},
+  backend_status: { native_status: true, using_rust: true },
+  tracks: {
+    available: ["rust", "mlx_exact_cga_recall"],
+    required: ["mlx_exact_cga_recall"],
+    missing_required: [],
+    mlx_exact_cga_recall: {
+      present: true,
+      skipped: false,
+      reason: null,
+      serving_authorized: true,
+      case_count: 1,
+      all_cases_parity_pass: true,
+      cases: [
+        {
+          N: 128,
+          top_k: 5,
+          p50_ms: 0.977,
+          p95_ms: 1.2,
+          mean_ms: 1.0,
+          rows_per_sec: 1024,
+          parity: { parity_pass: true },
+          copy_in_boundary: "copy-in zero borrow",
+          copy_out_boundary: "copy-out zero borrow",
+        },
+      ],
+    },
+  },
+  copy_boundaries: [
+    {
+      path: "test-path",
+      input: true,
+      output: true,
+      zero_copy_input: true,
+    },
+  ],
+  non_claims: ["No MLX semantic-backend claim."],
+  claim_safety: {
+    safe_claims: [],
+    rust_backend_notes: [],
+    known_copy_paths: [],
+    known_zero_copy_input_paths: [],
+    future_work: [],
+  },
+};
+
+afterEach(() => {
+  vi.unstubAllGlobals();
+});
+
+describe("AppleUmaReportRoute", () => {
+  it("loading state shows APPLE_UMA_LOADING and never 'Thinking'", async () => {
+    stubFetchPending();
+    renderRoute();
+    expect(await screen.findByText(APPLE_UMA_LOADING)).toBeInTheDocument();
+    expect(screen.queryByText(/thinking/i)).not.toBeInTheDocument();
+  });
+
+  it("malformed/empty API shape renders APPLE_UMA_ABSENCE_STATEMENT and APPLE_UMA_ABSENCE_ACTION", async () => {
+    stubFetch({});
+    renderRoute();
+    expect(await screen.findByText(APPLE_UMA_ABSENCE_STATEMENT)).toBeInTheDocument();
+    expect(screen.getByText(APPLE_UMA_ABSENCE_ACTION)).toBeInTheDocument();
+  });
+
+  it("stale committed-report shape renders expected labels", async () => {
+    stubFetch(STALE_REPORT);
+    renderRoute();
+
+    expect(await screen.findByText("Report artifact needs refresh")).toBeInTheDocument();
+    expect(screen.getByText(/No MLX success is being inferred/)).toBeInTheDocument();
+    expect(screen.getByText("track absent")).toBeInTheDocument();
+    expect(screen.getByText("parity false")).toBeInTheDocument();
+    expect(screen.getByText("serving authorized false")).toBeInTheDocument();
+    expect(screen.getAllByText("No MLX semantic-backend claim.").length).toBeGreaterThan(0);
+  });
+
+  it("MLX-present shape renders expected metrics and copy boundaries", async () => {
+    stubFetch(MLX_PRESENT_REPORT);
+    renderRoute();
+
+    expect(await screen.findByText("track present")).toBeInTheDocument();
+    expect(screen.getByText("executed")).toBeInTheDocument();
+    expect(screen.getByText("parity true")).toBeInTheDocument();
+    expect(screen.getByText("serving authorized true")).toBeInTheDocument();
+    expect(screen.getByText("128")).toBeInTheDocument();
+    expect(screen.getByText("0.977")).toBeInTheDocument();
+    expect(screen.getByText("copy-in zero borrow")).toBeInTheDocument();
+    expect(screen.getByText("copy-out zero borrow")).toBeInTheDocument();
+  });
+});
diff --git a/workbench-ui/src/app/apple-uma/AppleUmaReportRoute.tsx b/workbench-ui/src/app/apple-uma/AppleUmaReportRoute.tsx
index 435c42d8..4559afd7 100644
--- a/workbench-ui/src/app/apple-uma/AppleUmaReportRoute.tsx
+++ b/workbench-ui/src/app/apple-uma/AppleUmaReportRoute.tsx
@@ -4,6 +4,7 @@ import { EmptyState } from "../../design/components/states/EmptyState";
 import { ErrorState } from "../../design/components/states/ErrorState";
 import { LoadingState } from "../../design/components/states/LoadingState";
 import { Panel } from "../../design/components/Panel/Panel";
+import { type ReactNode } from "react";
 
 export const APPLE_UMA_LOADING = "Loading Apple UMA report...";
 export const APPLE_UMA_ABSENCE_STATEMENT = "No Apple UMA report projection available.";
@@ -111,7 +112,7 @@ function statusTone(kind: "good" | "warn" | "neutral") {
   return "border-[var(--color-border-subtle)] bg-[var(--color-surface-inset)] text-[var(--color-text-secondary)]";
 }
 
-function StatusPill({ children, kind = "neutral" }: { children: string; kind?: "good" | "warn" | "neutral" }) {
+function StatusPill({ children, kind = "neutral" }: { children: ReactNode; kind?: "good" | "warn" | "neutral" }) {
   return <span className={`inline-flex rounded-md border px-2 py-0.5 text-xs ${statusTone(kind)}`}>{children}</span>;
 }
 
diff --git a/workbench-ui/src/app/routeConformance.test.tsx b/workbench-ui/src/app/routeConformance.test.tsx
index a6839912..67ab4517 100644
--- a/workbench-ui/src/app/routeConformance.test.tsx
+++ b/workbench-ui/src/app/routeConformance.test.tsx
@@ -26,6 +26,12 @@ import { LogosRoute } from "./logos/LogosRoute";
 import { VaultRoute, VAULT_ABSENCE_STATEMENT, VAULT_ABSENCE_ACTION } from "./vault/VaultRoute";
 import { CalibrationRoute } from "./calibration/CalibrationRoute";
 import { SettingsRoute } from "./settings/SettingsRoute";
+import {
+  AppleUmaReportRoute,
+  APPLE_UMA_LOADING,
+  APPLE_UMA_ABSENCE_STATEMENT,
+  APPLE_UMA_ABSENCE_ACTION,
+} from "./apple-uma/AppleUmaReportRoute";
 
 /**
  * ADR-0162 §6 route conformance — executable, not aspirational.
@@ -243,6 +249,15 @@ const MOUNT_ROUTES: MountRouteSpec[] = [
       "No calibration evidence yet. The per-class arena ledger is populated by the sealed practice lane (ADR-0175).",
     emptyCommand: "core eval math-contemplation",
   },
+  {
+    name: "Apple UMA",
+    element: <AppleUmaReportRoute />,
+    path: "/apple-uma",
+    initialEntry: "/apple-uma",
+    loadingLabel: APPLE_UMA_LOADING,
+    emptyStatement: APPLE_UMA_ABSENCE_STATEMENT,
+    emptyCommand: APPLE_UMA_ABSENCE_ACTION,
+  },
 ];
 
 describe.each(MOUNT_ROUTES)("route conformance: $name", (spec) => {
diff --git a/workbench-ui/src/app/routes.ts b/workbench-ui/src/app/routes.ts
index 4c72f098..1b78f6b6 100644
--- a/workbench-ui/src/app/routes.ts
+++ b/workbench-ui/src/app/routes.ts
@@ -261,6 +261,19 @@ export const WORKBENCH_ROUTES: readonly WorkbenchRoute[] = [
     keyboardDigit: null,
     routeConformanceRequired: true,
   },
+  {
+    id: "apple-uma",
+    path: "/apple-uma",
+    routePattern: "apple-uma",
+    label: "Apple UMA",
+    description: "Inspect the Apple Silicon mechanical-sympathy benchmark report.",
+    section: "Substrate",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: null,
+    routeConformanceRequired: true,
+  },
   {
     id: "settings",
     path: "/settings",