Add keyboard shortcuts: Cmd+N, Cmd+S, Cmd+W, Cmd+P (M5 Task 3)

Cmd+N opens create note dialog, Cmd+S shows save toast,
Cmd+W closes active tab, Cmd+P opens quick open palette.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

e2e/keyboard-shortcuts.spec.ts

@@ -0,0 +1,43 @@
+import { test, expect } from '@playwright/test'
+
+test('Cmd+N opens create note dialog', async ({ page }) => {
+  await page.goto('/')
+  await page.waitForTimeout(500)
+
+  await page.keyboard.press('Meta+n')
+  await page.waitForTimeout(200)
+
+  await expect(page.locator('.create-dialog')).toBeVisible()
+  await expect(page.locator('.create-dialog__title')).toHaveText('Create New Note')
+})
+
+test('Cmd+S shows save toast', async ({ page }) => {
+  await page.goto('/')
+  await page.waitForTimeout(500)
+
+  await page.keyboard.press('Meta+s')
+  await page.waitForTimeout(200)
+
+  await expect(page.locator('.toast')).toBeVisible()
+  await expect(page.locator('.toast')).toHaveText('Saved')
+
+  await page.screenshot({ path: 'test-results/save-toast.png', fullPage: true })
+})
+
+test('Cmd+W closes the active tab', async ({ page }) => {
+  await page.goto('/')
+  await page.waitForTimeout(500)
+
+  // Open a note
+  await page.click('.note-list__item')
+  await page.waitForTimeout(300)
+  await expect(page.locator('.editor__tab--active')).toBeVisible()
+
+  // Close it with Cmd+W
+  await page.keyboard.press('Meta+w')
+  await page.waitForTimeout(300)
+
+  // Tab should be gone, placeholder should show
+  await expect(page.locator('.editor__tab')).not.toBeVisible()
+  await expect(page.locator('.editor__placeholder')).toBeVisible()
+})

e2e/quick-open.spec.ts

@@ -81,8 +81,8 @@ test('quick open: clicking outside closes palette', async ({ page }) => {
   await page.waitForTimeout(200)
   await expect(page.locator('.palette')).toBeVisible()
 
-  // Click the overlay (outside the palette)
-  await page.click('.palette__overlay', { position: { x: 10, y: 10 } })
-  await page.waitForTimeout(100)
+  // Click the overlay area (outside the palette) using mouse click at top-left
+  await page.mouse.click(10, 10)
+  await page.waitForTimeout(200)
   await expect(page.locator('.palette')).not.toBeVisible()
 })

src/App.tsx

@@ -1,4 +1,4 @@
-import { useCallback, useEffect, useState } from 'react'
+import { useCallback, useEffect, useRef, useState } from 'react'
 import { invoke } from '@tauri-apps/api/core'
 import { Sidebar } from './components/Sidebar'
 import { NoteList } from './components/NoteList'
@@ -7,6 +7,7 @@ import { Inspector } from './components/Inspector'
 import { ResizeHandle } from './components/ResizeHandle'
 import { CreateNoteDialog, type NoteType } from './components/CreateNoteDialog'
 import { QuickOpenPalette } from './components/QuickOpenPalette'
+import { Toast } from './components/Toast'
 import { isTauri, mockInvoke, addMockEntry } from './mock-tauri'
 import type { VaultEntry, SidebarSelection, GitCommit } from './types'
 import './App.css'
@@ -29,6 +30,12 @@ function App() {
   const [gitHistory, setGitHistory] = useState<GitCommit[]>([])
   const [showCreateDialog, setShowCreateDialog] = useState(false)
   const [showQuickOpen, setShowQuickOpen] = useState(false)
+  const [toastMessage, setToastMessage] = useState<string | null>(null)
+
+  // Refs for keyboard shortcuts (to avoid stale closures)
+  const activeTabPathRef = useRef(activeTabPath)
+  activeTabPathRef.current = activeTabPath
+  const handleCloseTabRef = useRef<(path: string) => void>(() => {})
 
   useEffect(() => {
     const loadVault = async () => {
@@ -91,6 +98,16 @@ function App() {
       if (mod && e.key === 'p') {
         e.preventDefault()
         setShowQuickOpen(true)
+      } else if (mod && e.key === 'n') {
+        e.preventDefault()
+        setShowCreateDialog(true)
+      } else if (mod && e.key === 's') {
+        e.preventDefault()
+        setToastMessage('Saved')
+      } else if (mod && e.key === 'w') {
+        e.preventDefault()
+        const path = activeTabPathRef.current
+        if (path) handleCloseTabRef.current(path)
       }
     }
     window.addEventListener('keydown', handleKeyDown)
@@ -152,6 +169,7 @@ function App() {
       return next
     })
   }, [activeTabPath])
+  handleCloseTabRef.current = handleCloseTab
 
   const handleSwitchTab = useCallback((path: string) => {
     setActiveTabPath(path)
@@ -273,6 +291,7 @@ function App() {
           onNavigate={handleNavigateWikilink}
         />
       </div>
+      <Toast message={toastMessage} onDismiss={() => setToastMessage(null)} />
       <QuickOpenPalette
         open={showQuickOpen}
         entries={entries}

src/components/Toast.css

@@ -0,0 +1,25 @@
+.toast {
+  position: fixed;
+  bottom: 32px;
+  left: 50%;
+  transform: translateX(-50%);
+  background: #2a2a4a;
+  color: #e0e0e0;
+  padding: 8px 20px;
+  border-radius: 8px;
+  font-size: 13px;
+  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
+  z-index: 1100;
+  animation: toast-in 0.2s ease-out;
+}
+
+@keyframes toast-in {
+  from {
+    opacity: 0;
+    transform: translateX(-50%) translateY(8px);
+  }
+  to {
+    opacity: 1;
+    transform: translateX(-50%) translateY(0);
+  }
+}

src/components/Toast.tsx

@@ -0,0 +1,23 @@
+import { useEffect } from 'react'
+import './Toast.css'
+
+interface ToastProps {
+  message: string | null
+  onDismiss: () => void
+}
+
+export function Toast({ message, onDismiss }: ToastProps) {
+  useEffect(() => {
+    if (!message) return
+    const timer = setTimeout(onDismiss, 2000)
+    return () => clearTimeout(timer)
+  }, [message, onDismiss])
+
+  if (!message) return null
+
+  return (
+    <div className="toast">
+      {message}
+    </div>
+  )
+}