refactor(notes): use shared types and interfaces in components

src/App.tsx

@@ -1,5 +1,5 @@
 import { useState } from 'react'
-import type { Note } from './types'
+import type { NotePatch } from './types/note'
 import { useNotes } from './hooks/useNotes'
 import NoteList from './components/NoteList'
 import NoteEditor from './components/NoteEditor'
@@ -21,7 +21,7 @@ function App() {
     setCreating(false)
   }
 
-  const handleUpdate = (id: number, patch: Partial<Pick<Note, 'title' | 'content'>>) => {
+  const handleUpdate = (id: number, patch: NotePatch) => {
     updateNote(id, patch)
     setSelectedId(null)
   }