Invite-only sign-up, present mode, series, handouts, templates, dictation, progress, sharing

- Admin: sign-up Open / Invite only / Closed with single-use invite links
- Present mode for scripts (auto-scroll) and outlines (step through, pace vs planned minutes)
- Series: group studies on the dashboard, filter by series, calendar file for a study's sessions
- Lesson handout: printable page per session (passage, outline, questions, writing lines)
- Save a chunk's notes as your own study template (synced)
- Voice dictation for notes and scripts (browser speech recognition)
- Reading progress: map of the 66 books and a calendar of days read, synced and merged across devices
- Export highlights and bookmarks as Markdown or Word, grouped by named colour
- Verse of the day push to the ntfy topic (needs IQBIBLE_API_KEY)
- Sharing: co-teacher editing via single-use invite links; read-only links can expire and take a passcode

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

src/utils/studyFilter.test.js

@@ -33,3 +33,22 @@ test('chosen tags must all be present, and combine with the search', () => {
 test('tags are counted, most used first', () => {
   expect(tagCounts(index)).toEqual([{ tag: 'hope', count: 2 }, { tag: 'grace', count: 1 }, { tag: 'leadership', count: 1 }]);
 });
+
+import { groupBySeries, seriesList } from './studyFilter.js';
+
+test('series are listed and studies grouped under them, with unsorted ones last', () => {
+  const idx = [
+    { id: 'a', title: 'A', series: 'Romans' }, { id: 'b', title: 'B', series: '' },
+    { id: 'c', title: 'C', series: 'Advent' }, { id: 'd', title: 'D', series: 'Romans' },
+  ];
+  expect(seriesList(idx)).toEqual([{ name: 'Advent', count: 1 }, { name: 'Romans', count: 2 }]);
+  expect(groupBySeries(idx).map((g) => `${g.name || '(none)'}:${g.items.map((e) => e.id).join('')}`)).toEqual(['Advent:c', 'Romans:ad', '(none):b']);
+  expect(groupBySeries([{ id: 'x' }]).map((g) => g.name)).toEqual(['']);
+});
+
+test('a series can be chosen as a filter, and the search finds studies by series name', () => {
+  const idx = [{ id: 'a', title: 'Ch 8', series: 'Romans' }, { id: 'b', title: 'Ch 1' }, { id: 'c', title: 'Gen', series: 'Advent' }];
+  expect(filterStudies(idx, { series: 'Romans' }).map((e) => e.id)).toEqual(['a']);
+  expect(filterStudies(idx, { series: '__none' }).map((e) => e.id)).toEqual(['b']);
+  expect(filterStudies(idx, { query: 'advent' }).map((e) => e.id)).toEqual(['c']);
+});