Studying: daily five minutes, reading list, plan-day studies use your template

- Home: "Your five minutes": a rotating Observe/Interpret/Apply prompt on the
  passage whose matching note is thinnest in your own words, a 5:00 clock and a
  box that appends to that note. Pasting is blocked; sessions show in Insights.
- Study: a Reading list tab (R) for the study: books and articles to consult,
  with a note and a tick; merges across devices.
- Starting a study from a reading-plan day now uses the notes template you last
  picked when starting a study by hand (logic moved to utils/planStudy.js).

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

src/utils/insights.test.js

@@ -46,3 +46,8 @@ test('slipped lines and follow-ups are collected, open follow-ups first', () =>
   expect(slippedList(projects)[0].items).toEqual(['the serpent', 'who spoke']);
   expect(followUpList(projects).map((f) => f.text)).toEqual(['call Sam', 'done thing']);
 });
+
+test('five-minute sessions this week are counted', () => {
+  const p = [study([chunk('a', { fiveMinutes: [{ at: NOW - 1000, field: 'observation' }, { at: NOW - 3 * WEEK_MS, field: 'application' }] })])];
+  expect(weeklySummary(p, NOW).fiveMinutes).toBe(1);
+});