Add own-work tracking, Claude hand-off check, and weekly recall

- Long pastes into Observe/Interpret/Apply are tagged as pasted; notes show
  Mine / N pasted and an own-words share. Pastes follow text through merges.
- The "-> Claude" buttons on the Script stage ask first when a chunk lacks
  enough of the user's own (non-pasted) words.
- Weekly recall card on Home: write a passage from memory, compare with notes,
  self-rate; recalls are saved on the chunk and synced.
- Recall history on Home with an eight-week strip and the full list.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

src/pages/HomePage.jsx

@@ -2,6 +2,8 @@ import { useEffect, useRef, useState } from 'react';
 import { useApp } from '../context/AppContext.js';
 import { filterStudies, groupBySeries, isTagQuery, seriesList, tagCounts } from '../utils/studyFilter.js';
 import BookCover from '../components/BookCover.jsx';
+import WeeklyRecall from '../components/WeeklyRecall.jsx';
+import RecallHistory from '../components/RecallHistory.jsx';
 import IqDailyCard from '../components/iq/IqDailyCard.jsx';
 import IqNarratorOptions, { useLazyNarrators } from '../components/iq/IqNarratorOptions.jsx';
 import PageShell from '../components/study/PageShell.jsx';
@@ -135,6 +137,8 @@ export default function HomePage() {
     >
       <main className="mx-auto grid max-w-6xl gap-6 px-4 py-6 lg:grid-cols-[minmax(0,1fr)_21rem]">
         <section className="min-w-0">
+          <WeeklyRecall />
+          <RecallHistory />
           <IqDailyCard />
           {autoRestoredCount !== null && (
             <div className={notice}>Synced {autoRestoredCount} project{autoRestoredCount > 1 ? 's' : ''} from another device.</div>