feat: add reading journal to book detail

Claude-Session: https://claude.ai/code/session_01M9MLit5Ko3X4s7rzC5Kv7X

src/books/BookDetail.tsx

@@ -2,6 +2,7 @@ import { useEffect, useState, type FormEvent } from 'react'
 import { Link, useNavigate, useParams } from 'react-router'
 import { api, ApiError, errorMessage, type Book } from '../api'
 import { card, dangerButton, inputClass, labelText, primaryButton, secondaryButton } from '../ui'
+import { NotesJournal } from '../notes/NotesJournal'
 import { ProgressBar, StatusBadge } from './Progress'
 
 export function BookDetail() {
@@ -155,6 +156,7 @@ export function BookDetail() {
           </dialog>
         )}
       </header>
+      <NotesJournal bookId={book.id} />
     </article>
   )
 }