diff --git a/apps/desktop/src/renderer/hotkeys/hooks/useRecordHotkeys/useRecordHotkeys.ts b/apps/desktop/src/renderer/hotkeys/hooks/useRecordHotkeys/useRecordHotkeys.ts
index 8b52d9e552d..1ebda67fc62 100644
--- a/apps/desktop/src/renderer/hotkeys/hooks/useRecordHotkeys/useRecordHotkeys.ts
+++ b/apps/desktop/src/renderer/hotkeys/hooks/useRecordHotkeys/useRecordHotkeys.ts
@@ -136,7 +136,10 @@ export function useRecordHotkeys(
 			}
 
 			const defaultKey = HOTKEYS[recordingId].key;
-			if (canonicalizeChord(captured) === canonicalizeChord(defaultKey)) {
+			if (
+				defaultKey &&
+				canonicalizeChord(captured) === canonicalizeChord(defaultKey)
+			) {
 				resetOverride(recordingId);
 			} else {
 				setOverride(recordingId, captured);
diff --git a/apps/desktop/src/renderer/hotkeys/registry.ts b/apps/desktop/src/renderer/hotkeys/registry.ts
index d79b3e514bb..4f0cffe8b44 100644
--- a/apps/desktop/src/renderer/hotkeys/registry.ts
+++ b/apps/desktop/src/renderer/hotkeys/registry.ts
@@ -102,22 +102,16 @@ export const HOTKEYS_REGISTRY = {
 		category: "Workspace",
 	},
 	PREV_WORKSPACE: {
-		key: {
-			mac: "meta+alt+up",
-			windows: "ctrl+shift+alt+up",
-			linux: "ctrl+shift+alt+up",
-		},
+		key: { mac: null, windows: null, linux: null },
 		label: "Previous Workspace",
 		category: "Workspace",
+		description: "Navigate to the previous workspace in the sidebar",
 	},
 	NEXT_WORKSPACE: {
-		key: {
-			mac: "meta+alt+down",
-			windows: "ctrl+shift+alt+down",
-			linux: "ctrl+shift+alt+down",
-		},
+		key: { mac: null, windows: null, linux: null },
 		label: "Next Workspace",
 		category: "Workspace",
+		description: "Navigate to the next workspace in the sidebar",
 	},
 	CLOSE_WORKSPACE: {
 		key: {
@@ -334,24 +328,6 @@ export const HOTKEYS_REGISTRY = {
 		category: "Terminal",
 		description: "Scroll the active terminal to the bottom",
 	},
-	PREV_TAB: {
-		key: {
-			mac: "meta+alt+left",
-			windows: "ctrl+shift+alt+left",
-			linux: "ctrl+shift+alt+left",
-		},
-		label: "Previous Tab",
-		category: "Terminal",
-	},
-	NEXT_TAB: {
-		key: {
-			mac: "meta+alt+right",
-			windows: "ctrl+shift+alt+right",
-			linux: "ctrl+shift+alt+right",
-		},
-		label: "Next Tab",
-		category: "Terminal",
-	},
 	PREV_TAB_ALT: {
 		key: {
 			mac: "ctrl+shift+tab",
@@ -366,6 +342,20 @@ export const HOTKEYS_REGISTRY = {
 		label: "Next Tab (Alt)",
 		category: "Terminal",
 	},
+	PREV_TAB: {
+		key: { mac: null, windows: null, linux: null },
+		label: "Previous Tab",
+		category: "Terminal",
+		description: "Focus the previous tab in the active workspace",
+	},
+	NEXT_TAB: {
+		key: { mac: null, windows: null, linux: null },
+		label: "Next Tab",
+		category: "Terminal",
+		description: "Focus the next tab in the active workspace",
+	},
+	// FORK NOTE: upstream renamed PREV_PANE → FOCUS_PANE_LEFT in #3403 (PR#3).
+	// Keep PREV_PANE until that cherry-pick is applied.
 	PREV_PANE: {
 		key: {
 			mac: "meta+shift+left",
diff --git a/apps/desktop/src/renderer/hotkeys/types.ts b/apps/desktop/src/renderer/hotkeys/types.ts
index 7dc1e9d99e7..e98558c6e93 100644
--- a/apps/desktop/src/renderer/hotkeys/types.ts
+++ b/apps/desktop/src/renderer/hotkeys/types.ts
@@ -1,6 +1,10 @@
 export type Platform = "mac" | "windows" | "linux";
 
-export type PlatformKey = { mac: string; windows: string; linux: string };
+export type PlatformKey = {
+	mac: string | null;
+	windows: string | null;
+	linux: string | null;
+};
 
 export type HotkeyCategory =
 	| "Navigation"
@@ -19,7 +23,7 @@ export interface HotkeyDisplay {
 }
 
 export interface HotkeyDefinition {
-	key: string;
+	key: string | null;
 	label: string;
 	category: HotkeyCategory;
 	description?: string;
diff --git a/apps/desktop/src/renderer/hotkeys/utils/resolveHotkeyFromEvent.test.ts b/apps/desktop/src/renderer/hotkeys/utils/resolveHotkeyFromEvent.test.ts
index e2336f26946..237c328e983 100644
--- a/apps/desktop/src/renderer/hotkeys/utils/resolveHotkeyFromEvent.test.ts
+++ b/apps/desktop/src/renderer/hotkeys/utils/resolveHotkeyFromEvent.test.ts
@@ -1,6 +1,7 @@
 import { afterEach, beforeEach, describe, expect, it } from "bun:test";
-import { HOTKEYS } from "../registry";
+import { HOTKEYS, type HotkeyId } from "../registry";
 import { useHotkeyOverridesStore } from "../stores/hotkeyOverridesStore";
+import type { HotkeyDefinition } from "../types";
 import {
 	canonicalizeChord,
 	eventToChord,
@@ -148,10 +149,13 @@ describe("resolveHotkeyFromEvent — live override index", () => {
 	});
 
 	// Resolve once so registry reorders / removals surface as a test failure
-	// here instead of silently skipping the cases below.
-	const sampleEntry = (
-		Object.entries(HOTKEYS) as [keyof typeof HOTKEYS, { key: string }][]
-	).find(([, hotkey]) => !!hotkey.key);
+	// here instead of silently skipping the cases below. The type predicate
+	// narrows to a HotkeyDefinition whose .key is guaranteed non-null after
+	// the filter, so sampleDef.key can be passed to string-only helpers below.
+	const sampleEntry = Object.entries(HOTKEYS).find(
+		(entry): entry is [HotkeyId, HotkeyDefinition & { key: string }] =>
+			entry[1].key !== null,
+	);
 	if (!sampleEntry) throw new Error("HOTKEYS has no bound default");
 	const [sampleId, sampleDef] = sampleEntry;
 
diff --git a/apps/desktop/src/renderer/routes/_authenticated/_dashboard/components/DashboardSidebar/hooks/useDashboardSidebarShortcuts/useDashboardSidebarShortcuts.ts b/apps/desktop/src/renderer/routes/_authenticated/_dashboard/components/DashboardSidebar/hooks/useDashboardSidebarShortcuts/useDashboardSidebarShortcuts.ts
index eaedf913f8a..ae1947b96a0 100644
--- a/apps/desktop/src/renderer/routes/_authenticated/_dashboard/components/DashboardSidebar/hooks/useDashboardSidebarShortcuts/useDashboardSidebarShortcuts.ts
+++ b/apps/desktop/src/renderer/routes/_authenticated/_dashboard/components/DashboardSidebar/hooks/useDashboardSidebarShortcuts/useDashboardSidebarShortcuts.ts
@@ -48,7 +48,6 @@ export function useDashboardSidebarShortcuts(
 	useHotkey("JUMP_TO_WORKSPACE_8", () => switchToWorkspace(7));
 	useHotkey("JUMP_TO_WORKSPACE_9", () => switchToWorkspace(8));
 
-	// Prev/next workspace navigation (cycles)
 	const matchRoute = useMatchRoute();
 	const currentWorkspaceMatch = matchRoute({
 		to: "/v2-workspace/$workspaceId",
@@ -62,6 +61,7 @@ export function useDashboardSidebarShortcuts(
 		const index = flattenedWorkspaces.findIndex(
 			(w) => w.id === currentWorkspaceId,
 		);
+		if (index === -1) return;
 		const prevIndex = index <= 0 ? flattenedWorkspaces.length - 1 : index - 1;
 		navigateToV2Workspace(flattenedWorkspaces[prevIndex].id, navigate);
 	});
@@ -71,8 +71,8 @@ export function useDashboardSidebarShortcuts(
 		const index = flattenedWorkspaces.findIndex(
 			(w) => w.id === currentWorkspaceId,
 		);
-		const nextIndex =
-			index >= flattenedWorkspaces.length - 1 || index === -1 ? 0 : index + 1;
+		if (index === -1) return;
+		const nextIndex = index >= flattenedWorkspaces.length - 1 ? 0 : index + 1;
 		navigateToV2Workspace(flattenedWorkspaces[nextIndex].id, navigate);
 	});