diff --git a/packages/app/e2e/browser/workspace-relative-navigation.spec.ts b/packages/app/e2e/browser/workspace-relative-navigation.spec.ts
new file mode 100644
index 0000000000..4853e9daa4
--- /dev/null
+++ b/packages/app/e2e/browser/workspace-relative-navigation.spec.ts
@@ -0,0 +1,74 @@
+import type { Page } from "@playwright/test";
+import { test, expect } from "../support/fixtures";
+import { gotoAppShell } from "../support/helpers/app";
+import { seedWorkspace } from "../support/helpers/seed-client";
+import { getServerId } from "../support/helpers/server-id";
+import {
+  expectSidebarWorkspaceSelected,
+  switchWorkspaceViaSidebar,
+} from "../support/helpers/workspace-ui";
+
+async function readVisibleWorkspaceOrder(page: Page): Promise<string[]> {
+  const rows = page.getByRole("button", { name: /^Workspace \d{2}$/ });
+  await expect(rows).toHaveCount(12);
+  return rows.evaluateAll(
+    (elements, prefix) =>
+      elements.map((element) => element.getAttribute("data-testid")!.slice(prefix.length)),
+    `sidebar-workspace-row-${getServerId()}:`,
+  );
+}
+
+async function navigateWorkspace(
+  page: Page,
+  direction: "next" | "previous",
+  workspaceId: string,
+): Promise<void> {
+  await page.keyboard.press(direction === "next" ? "Alt+]" : "Alt+[");
+  await expectSidebarWorkspaceSelected({ page, serverId: getServerId(), workspaceId });
+  await expect(page).toHaveURL(new RegExp(`/workspace/${workspaceId}$`));
+}
+
+test("previous and next traverse every visible workspace while digit shortcuts stop at nine", async ({
+  page,
+}) => {
+  test.setTimeout(120_000);
+  const project = await seedWorkspace({
+    repoPrefix: "relative-navigation-",
+    title: "Workspace 01",
+  });
+  try {
+    for (let index = 2; index <= 12; index += 1) {
+      const created = await project.client.createWorkspace({
+        source: { kind: "directory", path: project.repoPath },
+        title: `Workspace ${String(index).padStart(2, "0")}`,
+      });
+      expect(created.error).toBeNull();
+    }
+    await page.setViewportSize({ width: 1440, height: 1100 });
+    await gotoAppShell(page);
+    const order = await readVisibleWorkspaceOrder(page);
+
+    await test.step("next crosses the ninth workspace and previous returns to it", async () => {
+      await switchWorkspaceViaSidebar({ page, serverId: getServerId(), workspaceId: order[8] });
+      await navigateWorkspace(page, "next", order[9]);
+      await navigateWorkspace(page, "previous", order[8]);
+    });
+
+    await test.step("wrapping uses the true first and last visible workspace", async () => {
+      await switchWorkspaceViaSidebar({ page, serverId: getServerId(), workspaceId: order[0] });
+      await navigateWorkspace(page, "previous", order[11]);
+      await navigateWorkspace(page, "next", order[0]);
+    });
+
+    await test.step("the ninth digit shortcut still selects the ninth workspace", async () => {
+      await page.keyboard.press("Alt+9");
+      await expectSidebarWorkspaceSelected({
+        page,
+        serverId: getServerId(),
+        workspaceId: order[8],
+      });
+    });
+  } finally {
+    await project.cleanup();
+  }
+});
diff --git a/packages/app/src/utils/sidebar-shortcuts.test.ts b/packages/app/src/utils/sidebar-shortcuts.test.ts
index ac9663c6da..b05c930123 100644
--- a/packages/app/src/utils/sidebar-shortcuts.test.ts
+++ b/packages/app/src/utils/sidebar-shortcuts.test.ts
@@ -5,6 +5,7 @@ import type {
   SidebarWorkspaceEntry,
 } from "@/hooks/use-sidebar-workspaces-list";
 import { buildStatusGroups } from "@/hooks/sidebar-status-view-model";
+import { routeKeyboardShortcut } from "@/keyboard/route-shortcut";
 
 import {
   buildSidebarShortcutModel,
@@ -65,6 +66,46 @@ function project(projectKey: string, workspaces: SidebarWorkspaceEntry[]): Sideb
 }
 
 describe("buildSidebarShortcutModel", () => {
+  it.each([
+    [9, 1, 10],
+    [10, -1, 9],
+    [12, 1, 1],
+    [1, -1, 12],
+  ] as const)(
+    "navigates from workspace %i by %i to workspace %i across the full visible sidebar",
+    (current, delta, next) => {
+      const workspaces = Array.from({ length: 12 }, (_, index) =>
+        workspace({
+          serverId: "s",
+          workspaceId: `ws-${index + 1}`,
+          workspaceDirectory: `/repo/w${index + 1}`,
+          name: `w${index + 1}`,
+        }),
+      );
+      const model = buildSidebarShortcutModel({
+        projects: [project("p", workspaces)],
+        collapsedProjectKeys: new Set<string>(),
+      });
+
+      expect(
+        routeKeyboardShortcut(
+          { action: "workspace.navigate.relative", payload: { delta } },
+          {
+            pathname: `/h/s/workspace/ws-${current}`,
+            isMobile: false,
+            sidebarShortcutTargets: model.shortcutTargets,
+            navigationActiveWorkspace: null,
+            commandCenterOpen: false,
+            shortcutsDialogOpen: false,
+          },
+        ),
+      ).toEqual({ kind: "navigate-workspace", serverId: "s", workspaceId: `ws-${next}` });
+      expect(model.shortcutIndexByWorkspaceKey.size).toBe(9);
+      expect(model.shortcutIndexByWorkspaceKey.get("s:ws-9")).toBe(9);
+      expect(model.shortcutIndexByWorkspaceKey.has("s:ws-10")).toBe(false);
+    },
+  );
+
   it("builds shortcut targets in visual order and excludes collapsed projects", () => {
     const projects = [
       project("p1", [
@@ -111,7 +152,7 @@ describe("buildSidebarShortcutModel", () => {
     expect(model.shortcutIndexByWorkspaceKey.get("s1:ws-repo2-main")).toBeUndefined();
   });
 
-  it("limits shortcuts to 9", () => {
+  it("keeps all traversal targets while numbering only the first 9", () => {
     const workspaces = Array.from({ length: 20 }, (_, index) =>
       workspace({
         serverId: "s",
@@ -127,9 +168,11 @@ describe("buildSidebarShortcutModel", () => {
       collapsedProjectKeys: new Set<string>(),
     });
 
-    expect(model.shortcutTargets).toHaveLength(9);
-    expect(model.shortcutTargets[0]).toEqual({ serverId: "s", workspaceId: "ws-1" });
+    expect(model.shortcutTargets).toHaveLength(20);
     expect(model.shortcutTargets[8]).toEqual({ serverId: "s", workspaceId: "ws-9" });
+    expect(model.shortcutTargets[9]).toEqual({ serverId: "s", workspaceId: "ws-10" });
+    expect(model.shortcutIndexByWorkspaceKey.get("s:ws-9")).toBe(9);
+    expect(model.shortcutIndexByWorkspaceKey.get("s:ws-10")).toBeUndefined();
   });
 
   it("excludes a collapsed project's workspaces regardless of project kind", () => {
diff --git a/packages/app/src/utils/sidebar-shortcuts.ts b/packages/app/src/utils/sidebar-shortcuts.ts
index 86540357e6..d08cba927c 100644
--- a/packages/app/src/utils/sidebar-shortcuts.ts
+++ b/packages/app/src/utils/sidebar-shortcuts.ts
@@ -70,13 +70,10 @@ export function buildSidebarShortcutSections(input: {
     }
 
     for (const workspace of section.workspaces) {
-      if (shortcutTargets.length >= maxShortcuts) {
-        break;
-      }
-
-      const shortcutNumber = shortcutTargets.length + 1;
       shortcutTargets.push(createShortcutTarget(workspace));
-      shortcutIndexByWorkspaceKey.set(workspace.workspaceKey, shortcutNumber);
+      if (shortcutTargets.length <= maxShortcuts) {
+        shortcutIndexByWorkspaceKey.set(workspace.workspaceKey, shortcutTargets.length);
+      }
     }
   }