diff --git a/workbench-ui/src/app/App.tsx b/workbench-ui/src/app/App.tsx
index 77ef23cf..fc055acc 100644
--- a/workbench-ui/src/app/App.tsx
+++ b/workbench-ui/src/app/App.tsx
@@ -16,6 +16,26 @@ import { VaultRoute } from "./vault/VaultRoute";
 import { CalibrationRoute } from "./calibration/CalibrationRoute";
 import { SettingsRoute } from "./settings/SettingsRoute";
 import { getWorkbenchPrefs } from "./workbenchPrefs";
+import { WORKBENCH_ROUTES, type RouteElementMap } from "./routes";
+
+// The one place route id → element is bound (App owns the route-component
+// imports). Every WORKBENCH_ROUTES id must have an entry here; routes.test
+// asserts it, so a registry route without an element fails the suite instead
+// of rendering `undefined`.
+export const ROUTE_ELEMENTS: RouteElementMap = {
+  chat: <ChatRoute />,
+  trace: <TraceRoute />,
+  replay: <ReplayRoute />,
+  demos: <DemoTheaterRoute />,
+  proposals: <ProposalsRoute />,
+  runs: <RunsRoute />,
+  vault: <VaultRoute />,
+  audit: <AuditRoute />,
+  evals: <EvalsRoute />,
+  calibration: <CalibrationRoute />,
+  packs: <PacksRoute />,
+  settings: <SettingsRoute />,
+};
 
 export function App() {
   return (
@@ -24,18 +44,13 @@ export function App() {
         <Routes>
           <Route path="/" element={<Shell />}>
             <Route index element={<Navigate to={`/${getWorkbenchPrefs().landingRoute}`} replace />} />
-            <Route path="chat" element={<ChatRoute />} />
-            <Route path="trace/:turnId?" element={<TraceRoute />} />
-            <Route path="replay/:turnId?" element={<ReplayRoute />} />
-            <Route path="demos/:demoId?" element={<DemoTheaterRoute />} />
-            <Route path="proposals/:proposalId?" element={<ProposalsRoute />} />
-            <Route path="evals/:laneId?" element={<EvalsRoute />} />
-            <Route path="runs/:sessionId?" element={<RunsRoute />} />
-            <Route path="packs/:packId?" element={<PacksRoute />} />
-            <Route path="vault" element={<VaultRoute />} />
-            <Route path="calibration" element={<CalibrationRoute />} />
-            <Route path="audit" element={<AuditRoute />} />
-            <Route path="settings" element={<SettingsRoute />} />
+            {WORKBENCH_ROUTES.map((route) => (
+              <Route
+                key={route.id}
+                path={route.routePattern}
+                element={ROUTE_ELEMENTS[route.id]}
+              />
+            ))}
           </Route>
           <Route path="/preview" element={<PreviewPage />} />
         </Routes>
diff --git a/workbench-ui/src/app/LeftNav.tsx b/workbench-ui/src/app/LeftNav.tsx
index 3baa8c94..c27ce656 100644
--- a/workbench-ui/src/app/LeftNav.tsx
+++ b/workbench-ui/src/app/LeftNav.tsx
@@ -1,19 +1,11 @@
 import { NavLink } from "react-router-dom";
+import { leftNavSections } from "./routes";
 
-const NAV_ITEMS = [
-  { label: "Chat", to: "/chat" },
-  { label: "Trace", to: "/trace" },
-  { label: "Replay", to: "/replay" },
-  { label: "Demos", to: "/demos" },
-  { label: "Proposals", to: "/proposals" },
-  { label: "Evals", to: "/evals" },
-  { label: "Calibration", to: "/calibration" },
-  { label: "Runs", to: "/runs" },
-  { label: "Packs", to: "/packs" },
-  { label: "Vault", to: "/vault" },
-  { label: "Audit", to: "/audit" },
-  { label: "Settings", to: "/settings" },
-] as const;
+// Routes derive from the single registry (routes.ts), grouped by wayfinding
+// section. Adding a route in one place only is no longer possible — LeftNav,
+// the command palette, ⌘-digits, and the landing dropdown all read the same
+// list.
+const NAV_SECTIONS = leftNavSections();
 
 export function LeftNav() {
   return (
@@ -22,21 +14,29 @@ export function LeftNav() {
       className="flex h-full flex-col gap-1 overflow-y-auto border-r border-[var(--color-border-subtle)] bg-[var(--color-surface-base)] p-2"
       aria-label="Main navigation"
     >
-      {NAV_ITEMS.map((item) => (
-        <NavLink
-          key={item.to}
-          to={item.to}
-          className={({ isActive }) =>
-            [
-              "block rounded px-3 py-2 text-sm transition-colors focus-visible:outline focus-visible:outline-2 focus-visible:outline-[var(--color-focus-ring)]",
-              isActive
-                ? "border-l-2 border-[var(--color-focus-ring)] pl-[10px] text-[var(--color-text-primary)] bg-[var(--color-surface-raised)]"
-                : "border-l-2 border-transparent pl-[10px] text-[var(--color-text-secondary)] hover:text-[var(--color-text-primary)] hover:bg-[var(--color-surface-raised)]",
-            ].join(" ")
-          }
-        >
-          {item.label}
-        </NavLink>
+      {NAV_SECTIONS.map(({ section, routes }) => (
+        <div key={section} role="group" aria-label={section} className="flex flex-col gap-1">
+          <div className="px-3 pb-0.5 pt-2 text-[10px] font-semibold uppercase tracking-wider text-[var(--color-text-muted)]">
+            {section}
+          </div>
+          {routes.map((route) => (
+            <NavLink
+              key={route.path}
+              to={route.path}
+              title={route.description}
+              className={({ isActive }) =>
+                [
+                  "block rounded px-3 py-2 text-sm transition-colors focus-visible:outline focus-visible:outline-2 focus-visible:outline-[var(--color-focus-ring)]",
+                  isActive
+                    ? "border-l-2 border-[var(--color-focus-ring)] pl-[10px] text-[var(--color-text-primary)] bg-[var(--color-surface-raised)]"
+                    : "border-l-2 border-transparent pl-[10px] text-[var(--color-text-secondary)] hover:text-[var(--color-text-primary)] hover:bg-[var(--color-surface-raised)]",
+                ].join(" ")
+              }
+            >
+              {route.label}
+            </NavLink>
+          ))}
+        </div>
       ))}
     </nav>
   );
diff --git a/workbench-ui/src/app/Shell.test.tsx b/workbench-ui/src/app/Shell.test.tsx
index 8b29718e..4b14a7a5 100644
--- a/workbench-ui/src/app/Shell.test.tsx
+++ b/workbench-ui/src/app/Shell.test.tsx
@@ -76,24 +76,26 @@ describe("Shell", () => {
     expect(document.querySelector('[data-region="statusfooter"]')).toBeInTheDocument();
   });
 
-  it("LeftNav has exactly 12 items in order", () => {
+  it("LeftNav has exactly 12 items in section-grouped order", () => {
     renderShell();
     const nav = document.querySelector('[data-region="leftnav"]')!;
     const links = nav.querySelectorAll("a");
     expect(links).toHaveLength(12);
     const labels = Array.from(links).map((l) => l.textContent);
+    // Grouped by section (Converse → Cognition → Determinism → Evidence →
+    // Discipline → Substrate → Settings), derived from the route registry.
     expect(labels).toEqual([
       "Chat",
       "Trace",
       "Replay",
       "Demos",
       "Proposals",
-      "Evals",
-      "Calibration",
       "Runs",
-      "Packs",
       "Vault",
       "Audit",
+      "Evals",
+      "Calibration",
+      "Packs",
       "Settings",
     ]);
   });
diff --git a/workbench-ui/src/app/routes.test.tsx b/workbench-ui/src/app/routes.test.tsx
new file mode 100644
index 00000000..2a282bc5
--- /dev/null
+++ b/workbench-ui/src/app/routes.test.tsx
@@ -0,0 +1,113 @@
+import { render, screen } from "@testing-library/react";
+import { describe, expect, it } from "vitest";
+import { MemoryRouter } from "react-router-dom";
+import { CommandPalette } from "../design/components/primitives/CommandPalette";
+import { ROUTE_ELEMENTS } from "./App";
+import {
+  WORKBENCH_ROUTES,
+  PALETTE_ROUTES,
+  LANDING_ROUTE_IDS,
+  ROUTE_DIGIT_MAP,
+  ROUTE_SECTIONS,
+  leftNavSections,
+} from "./routes";
+
+/**
+ * B3.5-a — the route registry is the single source of truth. These guards
+ * fail loudly if a route is added to App without the registry, if a registry
+ * route loses an element, or if a navigable route falls out of the command
+ * palette (the prior Demos/Calibration drift).
+ */
+
+describe("route registry ↔ App element map", () => {
+  it("every route has exactly one element, and no element is orphaned", () => {
+    const routeIds = WORKBENCH_ROUTES.map((r) => r.id).sort();
+    const elementIds = Object.keys(ROUTE_ELEMENTS).sort();
+    expect(elementIds).toEqual(routeIds);
+  });
+
+  it("no route element is undefined (a registry route without an element)", () => {
+    for (const route of WORKBENCH_ROUTES) {
+      expect(ROUTE_ELEMENTS[route.id]).toBeDefined();
+    }
+  });
+
+  it("route ids and paths are unique", () => {
+    const ids = WORKBENCH_ROUTES.map((r) => r.id);
+    const paths = WORKBENCH_ROUTES.map((r) => r.path);
+    expect(new Set(ids).size).toBe(ids.length);
+    expect(new Set(paths).size).toBe(paths.length);
+  });
+});
+
+describe("keyboard-digit assignment is honest", () => {
+  it("digits are unique and within 0–9", () => {
+    const digits = WORKBENCH_ROUTES.map((r) => r.keyboardDigit).filter(
+      (d): d is string => d !== null,
+    );
+    expect(new Set(digits).size).toBe(digits.length);
+    for (const d of digits) expect(d).toMatch(/^[0-9]$/);
+  });
+
+  it("ROUTE_DIGIT_MAP maps each pinned digit to its route path", () => {
+    for (const route of WORKBENCH_ROUTES) {
+      if (route.keyboardDigit === null) continue;
+      expect(ROUTE_DIGIT_MAP[route.keyboardDigit]).toBe(route.path);
+    }
+    const pinned = WORKBENCH_ROUTES.filter((r) => r.keyboardDigit !== null);
+    expect(Object.keys(ROUTE_DIGIT_MAP)).toHaveLength(pinned.length);
+  });
+
+  it("more routes than digits — at least one route is palette-only (honest model)", () => {
+    const paletteOnly = WORKBENCH_ROUTES.filter((r) => r.keyboardDigit === null);
+    expect(paletteOnly.length).toBeGreaterThan(0);
+  });
+});
+
+describe("landing routes derive from the registry", () => {
+  it("includes Replay and Calibration (the prior drift)", () => {
+    expect(LANDING_ROUTE_IDS).toContain("replay");
+    expect(LANDING_ROUTE_IDS).toContain("calibration");
+  });
+});
+
+describe("leftNavSections", () => {
+  it("covers every LeftNav route exactly once, in section order", () => {
+    const flattened = leftNavSections().flatMap((g) => g.routes.map((r) => r.id));
+    const expected = WORKBENCH_ROUTES.filter((r) => r.leftNavVisible).map((r) => r.id);
+    expect(flattened).toEqual(expected);
+  });
+
+  it("only emits known sections", () => {
+    for (const group of leftNavSections()) {
+      expect(ROUTE_SECTIONS).toContain(group.section);
+    }
+  });
+});
+
+describe("command palette reachability", () => {
+  it("every palette-visible route is reachable as a Navigate command", () => {
+    render(
+      <MemoryRouter>
+        <CommandPalette open onOpenChange={() => {}} />
+      </MemoryRouter>,
+    );
+    for (const route of PALETTE_ROUTES) {
+      expect(
+        screen.getByRole("button", { name: `Open ${route.label}` }),
+      ).toBeInTheDocument();
+    }
+  });
+
+  it("Demos and Calibration are present (the regression they fell out of)", () => {
+    render(
+      <MemoryRouter>
+        <CommandPalette open onOpenChange={() => {}} />
+      </MemoryRouter>,
+    );
+    expect(screen.getByRole("button", { name: "Open Demos" })).toBeInTheDocument();
+    expect(
+      screen.getByRole("button", { name: "Open Calibration" }),
+    ).toBeInTheDocument();
+  });
+});
diff --git a/workbench-ui/src/app/routes.ts b/workbench-ui/src/app/routes.ts
new file mode 100644
index 00000000..1213e14d
--- /dev/null
+++ b/workbench-ui/src/app/routes.ts
@@ -0,0 +1,272 @@
+import type { ReactElement } from "react";
+
+/**
+ * Single source of truth for workbench navigation routes (Wave M B3.5-a).
+ *
+ * Every route list in the app derives from {@link WORKBENCH_ROUTES}:
+ *  - App `<Route>` declarations (via {@link ROUTE_ELEMENTS})
+ *  - LeftNav (grouped by section)
+ *  - the command palette Navigate section
+ *  - ⌘-digit navigation shortcuts
+ *  - the landing-route preference dropdown
+ *  - route-conformance fixtures
+ *
+ * Adding a route in one place only was the prior failure mode: Demos and
+ * Calibration shipped to LeftNav but never reached the command palette, and
+ * Replay/Calibration were absent from the landing dropdown. With one list,
+ * that drift is structurally impossible.
+ *
+ * Wayfinding `section`s group the flat route set by the organism's loop
+ * (Converse → Cognition → Determinism → Evidence → Discipline → Substrate →
+ * Settings). This is a display skin only — one workbench, one address space,
+ * one Evidence Chain Rail; never a split into separate apps.
+ */
+
+export const ROUTE_SECTIONS = [
+  "Converse",
+  "Cognition",
+  "Determinism",
+  "Evidence",
+  "Discipline",
+  "Substrate",
+  "Settings",
+] as const;
+
+export type RouteSection = (typeof ROUTE_SECTIONS)[number];
+
+export interface WorkbenchRoute {
+  /** Stable id; React key and digit-shortcut anchor. */
+  id: string;
+  /** Navigation target with no params, e.g. "/trace". */
+  path: string;
+  /** App `<Route path>` pattern; may carry optional params, e.g. "trace/:turnId?". */
+  routePattern: string;
+  /** LeftNav / palette label. */
+  label: string;
+  /** One line: what this route is for. */
+  description: string;
+  /** Wayfinding group. */
+  section: RouteSection;
+  /** Rendered in LeftNav. */
+  leftNavVisible: boolean;
+  /** Listed as a Navigate command in the palette. */
+  commandPaletteVisible: boolean;
+  /** Eligible as the landing route. */
+  landingRouteAllowed: boolean;
+  /**
+   * Single-digit ⌘ shortcut, or `null` when the route is palette-only.
+   * There are more routes than digits (1–9, 0) — the honest model pins the
+   * first ten and leaves the rest searchable. KeyboardHelp says so; the
+   * palette shows no chord for palette-only routes.
+   */
+  keyboardDigit: string | null;
+  /** Must pass ADR-0162 §6 route conformance (loading/error/empty). */
+  routeConformanceRequired: boolean;
+}
+
+// Array order is the LeftNav display order (already grouped by section).
+export const WORKBENCH_ROUTES: readonly WorkbenchRoute[] = [
+  {
+    id: "chat",
+    path: "/chat",
+    routePattern: "chat",
+    label: "Chat",
+    description: "Ask CORE a question and create turn evidence.",
+    section: "Converse",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "1",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "trace",
+    path: "/trace",
+    routePattern: "trace/:turnId?",
+    label: "Trace",
+    description: "Inspect the cognitive turn pipeline for a turn.",
+    section: "Cognition",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "2",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "replay",
+    path: "/replay",
+    routePattern: "replay/:turnId?",
+    label: "Replay",
+    description: "Re-run a turn and compare trace hashes.",
+    section: "Determinism",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "3",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "demos",
+    path: "/demos",
+    routePattern: "demos/:demoId?",
+    label: "Demos",
+    description: "Run a registered determinism demo end to end.",
+    section: "Determinism",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: null,
+    routeConformanceRequired: true,
+  },
+  {
+    id: "proposals",
+    path: "/proposals",
+    routePattern: "proposals/:proposalId?",
+    label: "Proposals",
+    description: "Review the teaching proposal queue and HITL ratification.",
+    section: "Evidence",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "4",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "runs",
+    path: "/runs",
+    routePattern: "runs/:sessionId?",
+    label: "Runs",
+    description: "Browse recorded session runs.",
+    section: "Evidence",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "6",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "vault",
+    path: "/vault",
+    routePattern: "vault",
+    label: "Vault",
+    description: "Inspect persisted session memory.",
+    section: "Evidence",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "8",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "audit",
+    path: "/audit",
+    routePattern: "audit",
+    label: "Audit",
+    description: "Read the deterministic audit event log.",
+    section: "Evidence",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "9",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "evals",
+    path: "/evals",
+    routePattern: "evals/:laneId?",
+    label: "Evals",
+    description: "Run eval lanes and read the wrong=0 ledger.",
+    section: "Discipline",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "5",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "calibration",
+    path: "/calibration",
+    routePattern: "calibration",
+    label: "Calibration",
+    description: "See the gold-tether arena earn the right to guess.",
+    section: "Discipline",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: null,
+    routeConformanceRequired: true,
+  },
+  {
+    id: "packs",
+    path: "/packs",
+    routePattern: "packs/:packId?",
+    label: "Packs",
+    description: "Browse language/identity packs (CORE-Logos studio).",
+    section: "Substrate",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "7",
+    routeConformanceRequired: true,
+  },
+  {
+    id: "settings",
+    path: "/settings",
+    routePattern: "settings",
+    label: "Settings",
+    description: "Local workbench preferences (read-only to the engine).",
+    section: "Settings",
+    leftNavVisible: true,
+    commandPaletteVisible: true,
+    landingRouteAllowed: true,
+    keyboardDigit: "0",
+    routeConformanceRequired: true,
+  },
+];
+
+/** Routes shown in LeftNav, in display order. */
+export const LEFT_NAV_ROUTES = WORKBENCH_ROUTES.filter((r) => r.leftNavVisible);
+
+/** Routes listed in the command palette Navigate section, in display order. */
+export const PALETTE_ROUTES = WORKBENCH_ROUTES.filter(
+  (r) => r.commandPaletteVisible,
+);
+
+/** Route ids eligible as the workbench landing route. */
+export const LANDING_ROUTE_IDS = WORKBENCH_ROUTES.filter(
+  (r) => r.landingRouteAllowed,
+).map((r) => r.id);
+
+/** ⌘-digit → navigation path, for the ten pinned routes. */
+export const ROUTE_DIGIT_MAP: Record<string, string> = Object.fromEntries(
+  WORKBENCH_ROUTES.filter((r) => r.keyboardDigit !== null).map((r) => [
+    r.keyboardDigit as string,
+    r.path,
+  ]),
+);
+
+/** LeftNav routes grouped by section, in section then route order. */
+export function leftNavSections(): {
+  section: RouteSection;
+  routes: WorkbenchRoute[];
+}[] {
+  const groups = new Map<RouteSection, WorkbenchRoute[]>(
+    ROUTE_SECTIONS.map((s) => [s, []]),
+  );
+  for (const route of LEFT_NAV_ROUTES) {
+    groups.get(route.section)!.push(route);
+  }
+  return ROUTE_SECTIONS.map((section) => ({
+    section,
+    routes: groups.get(section)!,
+  })).filter((group) => group.routes.length > 0);
+}
+
+/**
+ * The element registry consumed by `App`. Keyed by route id so that adding a
+ * route to {@link WORKBENCH_ROUTES} without giving it an element is caught by
+ * `routes.test.tsx` rather than rendering `undefined`. Populated in `App.tsx`
+ * (it owns the route-component imports); declared here so the contract — every
+ * route id has an element — lives next to the route list.
+ */
+export type RouteElementMap = Record<string, ReactElement>;
diff --git a/workbench-ui/src/app/useGlobalKeyboard.ts b/workbench-ui/src/app/useGlobalKeyboard.ts
index a2ee455b..f4824eed 100644
--- a/workbench-ui/src/app/useGlobalKeyboard.ts
+++ b/workbench-ui/src/app/useGlobalKeyboard.ts
@@ -1,19 +1,13 @@
 import { useEffect } from "react";
 import { useNavigate } from "react-router-dom";
 import { useRegisterShortcuts, type ShortcutEntry } from "./shortcutRegistry";
+import { ROUTE_DIGIT_MAP } from "./routes";
 
-const ROUTE_KEYS: Record<string, string> = {
-  "1": "/chat",
-  "2": "/trace",
-  "3": "/replay",
-  "4": "/proposals",
-  "5": "/evals",
-  "6": "/runs",
-  "7": "/packs",
-  "8": "/vault",
-  "9": "/audit",
-  "0": "/settings",
-};
+// digit → path for the ten pinned routes; derived from the single route
+// registry (routes.ts). Routes without a pinned digit (Demos, Calibration)
+// are reachable via the command palette, not a chord — and KeyboardHelp's
+// "global-routes" row stays honest about the 1–0 pinned set.
+const ROUTE_KEYS: Record<string, string> = ROUTE_DIGIT_MAP;
 
 interface GlobalKeyboardOptions {
   onTogglePalette: () => void;
diff --git a/workbench-ui/src/app/workbenchPrefs.ts b/workbench-ui/src/app/workbenchPrefs.ts
index 62f3ce8a..6b28d728 100644
--- a/workbench-ui/src/app/workbenchPrefs.ts
+++ b/workbench-ui/src/app/workbenchPrefs.ts
@@ -1,4 +1,5 @@
 import { useCallback, useEffect, useState } from "react";
+import { LANDING_ROUTE_IDS } from "./routes";
 
 // Local, single-operator workbench preferences (ADR-0160: local-only, no
 // cloud, no accounts). Persisted in localStorage; every pref here is read
@@ -7,20 +8,12 @@ import { useCallback, useEffect, useState } from "react";
 const PREFS_KEY = "core-workbench-prefs";
 const PREFS_EVENT = "core-workbench-prefs-change";
 
-export const LANDING_ROUTES = [
-  "chat",
-  "trace",
-  "demos",
-  "proposals",
-  "evals",
-  "runs",
-  "packs",
-  "vault",
-  "audit",
-  "settings",
-] as const;
+// Landing-eligible routes derive from the single route registry (routes.ts),
+// so the Settings dropdown can never drift from the real route set. The prior
+// hand-maintained tuple was missing Replay and Calibration.
+export const LANDING_ROUTES: readonly string[] = LANDING_ROUTE_IDS;
 
-export type LandingRoute = (typeof LANDING_ROUTES)[number];
+export type LandingRoute = string;
 
 export interface WorkbenchPrefs {
   /** Route the workbench opens to (consumed by the App index redirect). */
@@ -35,7 +28,7 @@ export const DEFAULT_PREFS: WorkbenchPrefs = {
 };
 
 function isLandingRoute(value: unknown): value is LandingRoute {
-  return typeof value === "string" && (LANDING_ROUTES as readonly string[]).includes(value);
+  return typeof value === "string" && LANDING_ROUTES.includes(value);
 }
 
 export function getWorkbenchPrefs(): WorkbenchPrefs {
diff --git a/workbench-ui/src/design/components/primitives/CommandPalette.keyboard.test.tsx b/workbench-ui/src/design/components/primitives/CommandPalette.keyboard.test.tsx
index 21a26601..85091120 100644
--- a/workbench-ui/src/design/components/primitives/CommandPalette.keyboard.test.tsx
+++ b/workbench-ui/src/design/components/primitives/CommandPalette.keyboard.test.tsx
@@ -52,8 +52,11 @@ describe("CommandPalette keyboard contract", () => {
     expect(screen.getByRole("button", { name: "Open Trace" })).toBeInTheDocument();
     expect(screen.getByRole("button", { name: "Open Replay" })).toBeInTheDocument();
 
+    // One Navigate command per palette-visible route (12), derived from the
+    // route registry — Demos and Calibration are now included (the prior
+    // hand-maintained list of 10 dropped them).
     const items = dialog.querySelectorAll('[role="option"]');
-    expect(items.length).toBe(10);
+    expect(items.length).toBe(12);
     const lastIndex = items.length - 1;
 
     // Initially first item (index 0) is focused — check aria-selected
diff --git a/workbench-ui/src/design/components/primitives/CommandPalette.tsx b/workbench-ui/src/design/components/primitives/CommandPalette.tsx
index 459190f3..488f17d3 100644
--- a/workbench-ui/src/design/components/primitives/CommandPalette.tsx
+++ b/workbench-ui/src/design/components/primitives/CommandPalette.tsx
@@ -10,32 +10,24 @@ import {
   type Command,
   type RecentItem,
 } from "../../../app/commandRegistry";
+import { PALETTE_ROUTES } from "../../../app/routes";
 
-const NAV_COMMANDS: Command[] = [
-  { id: "nav-chat", label: "Open Chat", section: "Navigate", kind: "navigate", shortcut: "⌘1", action: () => {} },
-  { id: "nav-trace", label: "Open Trace", section: "Navigate", kind: "navigate", shortcut: "⌘2", action: () => {} },
-  { id: "nav-replay", label: "Open Replay", section: "Navigate", kind: "navigate", shortcut: "⌘3", action: () => {} },
-  { id: "nav-proposals", label: "Open Proposals", section: "Navigate", kind: "navigate", shortcut: "⌘4", action: () => {} },
-  { id: "nav-evals", label: "Open Evals", section: "Navigate", kind: "navigate", shortcut: "⌘5", action: () => {} },
-  { id: "nav-runs", label: "Open Runs", section: "Navigate", kind: "navigate", shortcut: "⌘6", action: () => {} },
-  { id: "nav-packs", label: "Open Packs", section: "Navigate", kind: "navigate", shortcut: "⌘7", action: () => {} },
-  { id: "nav-vault", label: "Open Vault", section: "Navigate", kind: "navigate", shortcut: "⌘8", action: () => {} },
-  { id: "nav-audit", label: "Open Audit", section: "Navigate", kind: "navigate", shortcut: "⌘9", action: () => {} },
-  { id: "nav-settings", label: "Open Settings", section: "Navigate", kind: "navigate", shortcut: "⌘0", action: () => {} },
-];
+// Navigate commands derive from the single route registry (routes.ts), so
+// every palette-visible route is searchable here. The prior hand-maintained
+// list dropped Demos and Calibration; deriving makes that drift impossible.
+// Palette-only routes (no pinned ⌘-digit) appear with no chord — honest.
+const NAV_COMMANDS: Command[] = PALETTE_ROUTES.map((route) => ({
+  id: `nav-${route.id}`,
+  label: `Open ${route.label}`,
+  section: "Navigate",
+  kind: "navigate",
+  shortcut: route.keyboardDigit ? `⌘${route.keyboardDigit}` : undefined,
+  action: () => {},
+}));
 
-const NAV_PATHS: Record<string, string> = {
-  "nav-chat": "/chat",
-  "nav-trace": "/trace",
-  "nav-replay": "/replay",
-  "nav-proposals": "/proposals",
-  "nav-evals": "/evals",
-  "nav-runs": "/runs",
-  "nav-packs": "/packs",
-  "nav-vault": "/vault",
-  "nav-audit": "/audit",
-  "nav-settings": "/settings",
-};
+const NAV_PATHS: Record<string, string> = Object.fromEntries(
+  PALETTE_ROUTES.map((route) => [`nav-${route.id}`, route.path]),
+);
 
 interface DisplayItem {
   id: string;