Version history, notes on highlights and bookmarks, "you've studied this", prayer journal

- Earlier versions of a study: the server keeps compressed copies (about one per ten minutes of
  editing, the latest 30); Export shows what differs and puts one back (the replaced copy is kept)
- Notes on highlights and bookmarks: synced, merged without loss, in exports and backups
- Reader verse panel lists your studies and chunks that cover the verse, and opens them
- Prayer journal: requests, who for, linked verses, days prayed, answers; synced, in backups
  and the account export; daily prayer reminder through ntfy
- TODO.md lists the ideas not built yet

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

src/utils/backup.js

@@ -8,7 +8,7 @@ export const BACKUP_APP = 'bible-study-project';
 export const BACKUP_VERSION = 1;
 
 // `reader` is what the app holds in memory: { bookmarks, highlights, colorLabels, ink }.
-export function buildBackup({ reader, readingPlans, email = null, now = new Date() }) {
+export function buildBackup({ reader, readingPlans, prayers = [], email = null, now = new Date() }) {
   const projects = loadProjectIndex().map((e) => loadProjectById(e.id)).filter(Boolean);
   return {
     app: BACKUP_APP,
@@ -18,11 +18,13 @@ export function buildBackup({ reader, readingPlans, email = null, now = new Date
     projects,
     reader: {
       bookmarks: reader?.bookmarks ?? {},
+      bookmarkNotes: reader?.bookmarkNotes ?? {},
       highlights: reader?.highlights ?? [],
       colorLabels: reader?.colorLabels ?? {},
       ink: reader?.ink ?? {},
     },
     readingPlans: readingPlans ?? { progress: [], customPlans: [], activity: [] },
+    prayers: (prayers ?? []).filter((p) => p && !p.deleted),
   };
 }
 
@@ -35,12 +37,14 @@ export function validateBackup(data) {
   const projects = Array.isArray(data.projects) ? data.projects.filter((p) => p && typeof p.id === 'string' && p.title && Array.isArray(p.chapters)) : [];
   const reader = data.reader && typeof data.reader === 'object' ? data.reader : {};
   const bookmarks = reader.bookmarks && typeof reader.bookmarks === 'object' && !Array.isArray(reader.bookmarks) ? reader.bookmarks : {};
+  const bookmarkNotes = reader.bookmarkNotes && typeof reader.bookmarkNotes === 'object' && !Array.isArray(reader.bookmarkNotes) ? reader.bookmarkNotes : {};
   const highlights = Array.isArray(reader.highlights) ? reader.highlights.filter((h) => h && typeof h.id === 'string') : [];
   const colorLabels = reader.colorLabels && typeof reader.colorLabels === 'object' && !Array.isArray(reader.colorLabels) ? reader.colorLabels : {};
   const ink = reader.ink && typeof reader.ink === 'object' && !Array.isArray(reader.ink) ? reader.ink : {};
   const plans = data.readingPlans && typeof data.readingPlans === 'object' ? data.readingPlans : {};
+  const prayers = Array.isArray(data.prayers) ? data.prayers.filter((p) => p && typeof p.id === 'string' && typeof p.text === 'string' && p.text.trim() && !p.deleted) : [];
   const backup = {
-    projects, reader: { bookmarks, highlights, colorLabels, ink },
+    projects, prayers, reader: { bookmarks, bookmarkNotes, highlights, colorLabels, ink },
     readingPlans: {
       progress: Array.isArray(plans.progress) ? plans.progress : [],
       customPlans: Array.isArray(plans.customPlans) ? plans.customPlans : [],
@@ -51,7 +55,7 @@ export function validateBackup(data) {
     ok: true, backup,
     summary: {
       projects: projects.length, bookmarks: Object.keys(bookmarks).length, highlights: highlights.length,
-      inkPages: Object.keys(ink).length, plans: backup.readingPlans.progress.length + backup.readingPlans.customPlans.length,
+      inkPages: Object.keys(ink).length, prayers: prayers.length, plans: backup.readingPlans.progress.length + backup.readingPlans.customPlans.length,
     },
   };
 }