feat: breadcrumb trash/restore buttons and cmd+del shortcut

- Added trash icon button in breadcrumb bar for non-trashed notes
- Added restore (arrow counter-clockwise) button for trashed notes
- Trash button sets trashed=true and trashed_at in frontmatter
- Restore button removes trashed/trashed_at from frontmatter
- Added Cmd+Delete keyboard shortcut to trash active note
- Wired handlers through Editor -> App with vault entry updates
- Toast notifications for trash/restore actions

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

src/App.tsx

@@ -112,10 +112,26 @@ function App() {
     vault.updateEntry(typeEntry.path, { icon, color })
   }, [vault, notes])
 
+  const handleTrashNote = useCallback(async (path: string) => {
+    const now = new Date().toISOString().slice(0, 10)
+    await notes.handleUpdateFrontmatter(path, 'trashed', true)
+    await notes.handleUpdateFrontmatter(path, 'trashed_at', now)
+    vault.updateEntry(path, { trashed: true, trashedAt: Date.now() / 1000 })
+    setToastMessage('Note moved to trash')
+  }, [notes, vault, setToastMessage])
+
+  const handleRestoreNote = useCallback(async (path: string) => {
+    await notes.handleUpdateFrontmatter(path, 'trashed', false)
+    await notes.handleDeleteProperty(path, 'trashed_at')
+    vault.updateEntry(path, { trashed: false, trashedAt: null })
+    setToastMessage('Note restored from trash')
+  }, [notes, vault, setToastMessage])
+
   useAppKeyboard({
     onQuickOpen: () => setShowQuickOpen(true),
     onCreateNote: openCreateDialog,
     onSave: () => setToastMessage('Saved'),
+    onTrashNote: handleTrashNote,
     activeTabPathRef: notes.activeTabPathRef,
     handleCloseTabRef: notes.handleCloseTabRef,
   })
@@ -193,6 +209,8 @@ function App() {
             showAIChat={showAIChat}
             onToggleAIChat={() => setShowAIChat(c => !c)}
             vaultPath={vaultPath}
+            onTrashNote={handleTrashNote}
+            onRestoreNote={handleRestoreNote}
           />
         </div>
       </div>

src/components/BreadcrumbBar.tsx

@@ -8,6 +8,8 @@ import {
   Sparkle,
   SlidersHorizontal,
   DotsThree,
+  Trash,
+  ArrowCounterClockwise,
 } from '@phosphor-icons/react'
 
 interface BreadcrumbBarProps {
@@ -22,6 +24,8 @@ interface BreadcrumbBarProps {
   onToggleAIChat?: () => void
   inspectorCollapsed?: boolean
   onToggleInspector?: () => void
+  onTrash?: () => void
+  onRestore?: () => void
 }
 
 const DISABLED_ICON_STYLE = { opacity: 0.4, cursor: 'not-allowed' } as const
@@ -29,6 +33,7 @@ const DISABLED_ICON_STYLE = { opacity: 0.4, cursor: 'not-allowed' } as const
 export const BreadcrumbBar = memo(function BreadcrumbBar({
   entry, wordCount, isModified, showDiffToggle, diffMode, diffLoading,
   onToggleDiff, showAIChat, onToggleAIChat, inspectorCollapsed, onToggleInspector,
+  onTrash, onRestore,
 }: BreadcrumbBarProps) {
   return (
     <div
@@ -104,6 +109,23 @@ export const BreadcrumbBar = memo(function BreadcrumbBar({
         >
           <Sparkle size={16} weight={showAIChat ? 'fill' : 'regular'} />
         </button>
+        {entry.trashed ? (
+          <button
+            className="flex items-center justify-center border-none bg-transparent p-0 cursor-pointer transition-colors text-muted-foreground hover:text-foreground"
+            onClick={onRestore}
+            title="Restore from trash"
+          >
+            <ArrowCounterClockwise size={16} />
+          </button>
+        ) : (
+          <button
+            className="flex items-center justify-center border-none bg-transparent p-0 cursor-pointer transition-colors text-muted-foreground hover:text-destructive"
+            onClick={onTrash}
+            title="Move to trash (Cmd+Delete)"
+          >
+            <Trash size={16} />
+          </button>
+        )}
         {inspectorCollapsed && (
           <button
             className="flex items-center justify-center border-none bg-transparent p-0 text-muted-foreground cursor-pointer hover:text-foreground transition-colors"

src/components/Editor.tsx

@@ -48,6 +48,8 @@ interface EditorProps {
   showAIChat?: boolean
   onToggleAIChat?: () => void
   vaultPath?: string
+  onTrashNote?: (path: string) => void
+  onRestoreNote?: (path: string) => void
 }
 
 // --- Custom Inline Content: WikiLink ---
@@ -151,6 +153,7 @@ export const Editor = memo(function Editor({
   onUpdateFrontmatter, onDeleteProperty, onAddProperty,
   showAIChat, onToggleAIChat,
   vaultPath,
+  onTrashNote, onRestoreNote,
 }: EditorProps) {
   const [diffMode, setDiffMode] = useState(false)
   const [diffContent, setDiffContent] = useState<string | null>(null)
@@ -351,6 +354,8 @@ export const Editor = memo(function Editor({
       onToggleAIChat={onToggleAIChat}
       inspectorCollapsed={inspectorCollapsed}
       onToggleInspector={onToggleInspector}
+      onTrash={onTrashNote ? () => onTrashNote(activeTab.entry.path) : undefined}
+      onRestore={onRestoreNote ? () => onRestoreNote(activeTab.entry.path) : undefined}
     />
   ) : null
 

src/hooks/useAppKeyboard.ts

@@ -4,12 +4,13 @@ interface KeyboardActions {
   onQuickOpen: () => void
   onCreateNote: () => void
   onSave: () => void
+  onTrashNote: (path: string) => void
   activeTabPathRef: React.MutableRefObject<string | null>
   handleCloseTabRef: React.MutableRefObject<(path: string) => void>
 }
 
 export function useAppKeyboard({
-  onQuickOpen, onCreateNote, onSave,
+  onQuickOpen, onCreateNote, onSave, onTrashNote,
   activeTabPathRef, handleCloseTabRef,
 }: KeyboardActions) {
   useEffect(() => {
@@ -36,9 +37,16 @@ export function useAppKeyboard({
           if (path) handleCloseTabRef.current(path)
           break
         }
+        case 'Backspace':
+        case 'Delete': {
+          e.preventDefault()
+          const path = activeTabPathRef.current
+          if (path) onTrashNote(path)
+          break
+        }
       }
     }
     window.addEventListener('keydown', handleKeyDown)
     return () => window.removeEventListener('keydown', handleKeyDown)
-  }, [onQuickOpen, onCreateNote, onSave, activeTabPathRef, handleCloseTabRef])
+  }, [onQuickOpen, onCreateNote, onSave, onTrashNote, activeTabPathRef, handleCloseTabRef])
 }