feat(dashboard): keyboard shortcuts to switch dashboard tabs

dashboard/app/dashboard/layout.tsx

@@ -7,12 +7,14 @@ import Sidebar from "@/components/Sidebar";
 import SearchBar from "@/components/SearchBar";
 import ThemeSelector from "@/components/ThemeSelector";
 import NotificationBell from "@/components/NotificationBell";
-import CommandPalette from "@/components/CommandPalette";
+import CommandPalette, { NAV_ITEMS } from "@/components/CommandPalette";
 import MobileNavDrawer from "@/components/MobileNavDrawer";
 import { NotificationsProvider } from "@/lib/notifications-context";
 import HealthStatusIndicator from "@/components/HealthStatusIndicator";
+import { useTabShortcuts } from "@/lib/use-tab-shortcuts";
 
 function DashboardShell({ children }: { children: React.ReactNode }) {
+  const router = useRouter();
   const [paletteOpen, setPaletteOpen] = useState(false);
   // #808 — mobile drawer, only reachable below the md breakpoint
   const [navOpen, setNavOpen] = useState(false);
@@ -25,6 +27,10 @@ function DashboardShell({ children }: { children: React.ReactNode }) {
     }
   }, []);
 
+  // #1041 — `g` then a tab key (see NAV_ITEMS) jumps between dashboard tabs
+  const navigate = useCallback((href: string) => router.push(href), [router]);
+  useTabShortcuts(NAV_ITEMS, navigate, paletteOpen);
+
   useEffect(() => {
     document.addEventListener("keydown", handleKeyDown);
     return () => document.removeEventListener("keydown", handleKeyDown);

dashboard/components/CommandPalette.tsx

@@ -9,16 +9,18 @@ interface NavItem {
   href: string;
   icon: string;
   keywords?: string;
+  /** Second key of the `g` + key tab shortcut (#1041), e.g. "t" for `g t`. */
+  shortcut: string;
 }
 
-const NAV_ITEMS: NavItem[] = [
-  { label: "Overview", href: "/dashboard", icon: "⬛", keywords: "home summary stats" },
-  { label: "Transactions", href: "/dashboard/transactions", icon: "📋", keywords: "payments social feed" },
-  { label: "Payouts", href: "/dashboard/payouts", icon: "💸", keywords: "batch disburse withdraw" },
-  { label: "QR Codes", href: "/dashboard/qr", icon: "⬜", keywords: "scan generate merchant" },
-  { label: "Analytics", href: "/dashboard/analytics", icon: "📈", keywords: "charts reports graph" },
-  { label: "Contracts", href: "/dashboard/contracts", icon: "🔗", keywords: "soroban smart contract health" },
-  { label: "Yield Vault", href: "/dashboard/yield", icon: "🏦", keywords: "apy tvl deposit" },
+export const NAV_ITEMS: NavItem[] = [
+  { label: "Overview", href: "/dashboard", icon: "⬛", keywords: "home summary stats", shortcut: "o" },
+  { label: "Transactions", href: "/dashboard/transactions", icon: "📋", keywords: "payments social feed", shortcut: "t" },
+  { label: "Payouts", href: "/dashboard/payouts", icon: "💸", keywords: "batch disburse withdraw", shortcut: "p" },
+  { label: "QR Codes", href: "/dashboard/qr", icon: "⬜", keywords: "scan generate merchant", shortcut: "q" },
+  { label: "Analytics", href: "/dashboard/analytics", icon: "📈", keywords: "charts reports graph", shortcut: "a" },
+  { label: "Contracts", href: "/dashboard/contracts", icon: "🔗", keywords: "soroban smart contract health", shortcut: "c" },
+  { label: "Yield Vault", href: "/dashboard/yield", icon: "🏦", keywords: "apy tvl deposit", shortcut: "y" },
 ];
 
 interface CommandPaletteProps {
@@ -112,6 +114,9 @@ export default function CommandPalette({ open, onClose }: CommandPaletteProps) {
                 >
                   <span aria-hidden="true">{item.icon}</span>
                   {item.label}
+                  <kbd className="ml-auto font-mono text-[10px] uppercase text-slate-400">
+                    g {item.shortcut}
+                  </kbd>
                 </Command.Item>
               ))}
             </Command.Group>

dashboard/lib/__tests__/use-tab-shortcuts.test.tsx

@@ -0,0 +1,63 @@
+import { describe, it, expect, beforeEach, afterEach, vi } from "vitest";
+import { renderHook } from "@testing-library/react";
+import { NAV_ITEMS } from "@/components/CommandPalette";
+import { TAB_SHORTCUT_WINDOW_MS, useTabShortcuts } from "@/lib/use-tab-shortcuts";
+
+function press(key: string, init: KeyboardEventInit = {}, target: EventTarget = document.body) {
+  target.dispatchEvent(new KeyboardEvent("keydown", { key, bubbles: true, ...init }));
+}
+
+describe("useTabShortcuts (#1041)", () => {
+  const onNavigate = vi.fn();
+
+  beforeEach(() => {
+    vi.useFakeTimers();
+    onNavigate.mockClear();
+  });
+
+  afterEach(() => {
+    vi.useRealTimers();
+    document.body.innerHTML = "";
+  });
+
+  it.each(NAV_ITEMS.map((item) => [item.shortcut, item.href]))(
+    "g %s navigates to %s",
+    (shortcut, href) => {
+      renderHook(() => useTabShortcuts(NAV_ITEMS, onNavigate));
+      press("g");
+      press(shortcut);
+      expect(onNavigate).toHaveBeenCalledWith(href);
+    },
+  );
+
+  it("ignores the second key once the window has passed", () => {
+    renderHook(() => useTabShortcuts(NAV_ITEMS, onNavigate));
+    press("g");
+    vi.advanceTimersByTime(TAB_SHORTCUT_WINDOW_MS + 1);
+    press("t");
+    expect(onNavigate).not.toHaveBeenCalled();
+  });
+
+  it("ignores keys pressed while typing in an input", () => {
+    renderHook(() => useTabShortcuts(NAV_ITEMS, onNavigate));
+    const input = document.createElement("input");
+    document.body.appendChild(input);
+    press("g", {}, input);
+    press("t", {}, input);
+    expect(onNavigate).not.toHaveBeenCalled();
+  });
+
+  it("ignores sequences with modifier keys held", () => {
+    renderHook(() => useTabShortcuts(NAV_ITEMS, onNavigate));
+    press("g", { ctrlKey: true });
+    press("t");
+    expect(onNavigate).not.toHaveBeenCalled();
+  });
+
+  it("is inert while disabled (command palette open)", () => {
+    renderHook(() => useTabShortcuts(NAV_ITEMS, onNavigate, true));
+    press("g");
+    press("t");
+    expect(onNavigate).not.toHaveBeenCalled();
+  });
+});

dashboard/lib/use-tab-shortcuts.ts

@@ -0,0 +1,50 @@
+"use client";
+
+import { useCallback, useEffect, useRef } from "react";
+
+/** How long after a bare `g` the second key still counts (#1041). */
+export const TAB_SHORTCUT_WINDOW_MS = 1000;
+
+/** Typing in a form field must never trigger navigation shortcuts. */
+export function isTypingTarget(target: EventTarget | null) {
+  if (!(target instanceof HTMLElement)) return false;
+  return (
+    target.isContentEditable ||
+    ["INPUT", "TEXTAREA", "SELECT"].includes(target.tagName)
+  );
+}
+
+/**
+ * #1041 — `g` then a tab key jumps between dashboard tabs, e.g. `g t` for
+ * Transactions. `items` maps the second key to a route via `shortcut`.
+ */
+export function useTabShortcuts(
+  items: { href: string; shortcut: string }[],
+  onNavigate: (href: string) => void,
+  disabled = false,
+) {
+  const pendingGRef = useRef(0);
+
+  const handleKeyDown = useCallback(
+    (e: KeyboardEvent) => {
+      if (disabled || e.metaKey || e.ctrlKey || e.altKey || isTypingTarget(e.target)) return;
+      const key = e.key.toLowerCase();
+      if (Date.now() - pendingGRef.current < TAB_SHORTCUT_WINDOW_MS) {
+        pendingGRef.current = 0;
+        const item = items.find((nav) => nav.shortcut === key);
+        if (item) {
+          e.preventDefault();
+          onNavigate(item.href);
+        }
+        return;
+      }
+      if (key === "g" && !e.shiftKey) pendingGRef.current = Date.now();
+    },
+    [items, onNavigate, disabled],
+  );
+
+  useEffect(() => {
+    document.addEventListener("keydown", handleKeyDown);
+    return () => document.removeEventListener("keydown", handleKeyDown);
+  }, [handleKeyDown]);
+}