diff --git a/workbench-ui/src/app/TopBar.tsx b/workbench-ui/src/app/TopBar.tsx
index 2881e2ff..6614bf4f 100644
--- a/workbench-ui/src/app/TopBar.tsx
+++ b/workbench-ui/src/app/TopBar.tsx
@@ -1,5 +1,6 @@
 import { CommandPalette } from "../design/components/primitives/CommandPalette";
 import { useRuntimeStatus } from "../api/queries";
+import { WrongZeroFrame } from "./WrongZeroFrame";
 
 export function TopBar({
   paletteOpen,
@@ -64,6 +65,8 @@ export function TopBar({
         </button>
       </div>
 
+      <WrongZeroFrame />
+
       <div className="shrink-0">{connectionPill}</div>
 
       <CommandPalette open={paletteOpen} onOpenChange={onPaletteOpenChange} />
diff --git a/workbench-ui/src/app/WrongZeroFrame.test.tsx b/workbench-ui/src/app/WrongZeroFrame.test.tsx
new file mode 100644
index 00000000..c0dd636c
--- /dev/null
+++ b/workbench-ui/src/app/WrongZeroFrame.test.tsx
@@ -0,0 +1,80 @@
+import { QueryClientProvider } from "@tanstack/react-query";
+import { render, screen } from "@testing-library/react";
+import { MemoryRouter } from "react-router-dom";
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { createTestQueryClient } from "../test/createTestQueryClient";
+import type { ServingMetrics } from "../types/api";
+import { WrongZeroFrame } from "./WrongZeroFrame";
+
+function renderFrame() {
+  return render(
+    <QueryClientProvider client={createTestQueryClient()}>
+      <MemoryRouter>
+        <WrongZeroFrame />
+      </MemoryRouter>
+    </QueryClientProvider>,
+  );
+}
+
+function stub(metrics: ServingMetrics[] | "error") {
+  vi.stubGlobal(
+    "fetch",
+    vi.fn(() =>
+      metrics === "error"
+        ? Promise.resolve({
+            json: () =>
+              Promise.resolve({
+                ok: false,
+                generated_at: "now",
+                error: { code: "read_error", message: "boom" },
+              }),
+          })
+        : Promise.resolve({
+            json: () => Promise.resolve({ ok: true, generated_at: "now", data: { items: metrics } }),
+          }),
+    ),
+  );
+}
+
+function lane(correct: number, refused: number, wrong: number, name: string): ServingMetrics {
+  return {
+    lane: name,
+    correct,
+    refused,
+    wrong,
+    sample_count: correct + refused + wrong,
+    source_path: `evals/${name}/report.json`,
+    source_digest: "sha256:x",
+  };
+}
+
+describe("WrongZeroFrame", () => {
+  afterEach(() => {
+    vi.restoreAllMocks();
+    localStorage.clear();
+  });
+
+  it("aggregates the live serving triplet across lanes with wrong load-bearing", async () => {
+    stub([lane(4, 46, 0, "train_sample"), lane(5, 495, 0, "holdout_dev")]);
+    renderFrame();
+    // 9 correct · 541 refused · 0 wrong
+    expect(await screen.findByText(/9 correct · 541 refused ·/)).toBeInTheDocument();
+    expect(screen.getByText("0 wrong")).toBeInTheDocument();
+    // it links to the discipline behind it
+    expect(screen.getByRole("link")).toHaveAttribute("href", "/calibration");
+  });
+
+  it("is a mirror — renders a non-zero wrong honestly, not a hard-coded zero", async () => {
+    stub([lane(90, 5, 5, "drifted")]);
+    renderFrame();
+    expect(await screen.findByText("5 wrong")).toBeInTheDocument();
+    expect(screen.queryByText("0 wrong")).not.toBeInTheDocument();
+  });
+
+  it("renders an honest 'metrics unavailable', never a fake zero, on error", async () => {
+    stub("error");
+    renderFrame();
+    expect(await screen.findByText(/metrics unavailable/)).toBeInTheDocument();
+    expect(screen.queryByText("0 wrong")).not.toBeInTheDocument();
+  });
+});
diff --git a/workbench-ui/src/app/WrongZeroFrame.tsx b/workbench-ui/src/app/WrongZeroFrame.tsx
new file mode 100644
index 00000000..546cb5e4
--- /dev/null
+++ b/workbench-ui/src/app/WrongZeroFrame.tsx
@@ -0,0 +1,59 @@
+import { Link } from "react-router-dom";
+import { useServingMetrics } from "../api/queries";
+
+// The project's thesis, made a constant presence: the live serving outcome
+// with the wrong count load-bearing. It is a MIRROR of /serving/metrics —
+// it shows whatever the committed reports say, never a hard-coded zero, and
+// says so honestly when the metrics can't be read.
+export function WrongZeroFrame() {
+  const { data, isLoading, isError } = useServingMetrics();
+
+  const base =
+    "shrink-0 rounded-full border px-3 py-1 text-xs tabular-nums focus-visible:outline focus-visible:outline-2 focus-visible:outline-[var(--color-focus-ring)]";
+
+  if (isLoading) {
+    return (
+      <span
+        className={`${base} border-[var(--color-border-subtle)] text-[var(--color-text-secondary)]`}
+        aria-live="polite"
+      >
+        wrong=0 …
+      </span>
+    );
+  }
+
+  if (isError || !data || data.length === 0) {
+    return (
+      <span
+        className={`${base} border-[var(--color-border-subtle)] text-[var(--color-text-muted)]`}
+        aria-live="polite"
+        title="serving metrics could not be read"
+      >
+        wrong=0: metrics unavailable
+      </span>
+    );
+  }
+
+  const correct = data.reduce((sum, m) => sum + m.correct, 0);
+  const refused = data.reduce((sum, m) => sum + m.refused, 0);
+  const wrong = data.reduce((sum, m) => sum + m.wrong, 0);
+
+  return (
+    <Link
+      to="/calibration"
+      className={`${base} border-[var(--color-border-subtle)] bg-[var(--color-surface-sunken)] no-underline text-[var(--color-text-secondary)] hover:text-[var(--color-text-primary)]`}
+      aria-label={`Serving outcome: ${correct} correct, ${refused} refused, ${wrong} wrong. View calibration.`}
+    >
+      <span>{correct} correct · {refused} refused · </span>
+      <span
+        className={
+          wrong > 0
+            ? "font-semibold text-[var(--color-state-contradicted)]"
+            : "font-semibold text-[var(--color-state-verified)]"
+        }
+      >
+        {wrong} wrong
+      </span>
+    </Link>
+  );
+}