fix: IDB resilience, direct autopreload, nav delegation, Bible bounds

src/core/data-cache.ts

@@ -39,8 +39,19 @@ function getDB(): Promise<IDBDatabase> {
           store.createIndex('storedAt', 'storedAt', { unique: false });
         }
       };
-      request.onsuccess = () => resolve(request.result);
-      request.onerror = () => reject(request.error);
+      request.onsuccess = () => {
+        const db = request.result;
+        db.onclose = () => { dbPromise = null; };
+        db.onversionchange = () => {
+          db.close();
+          dbPromise = null;
+        };
+        resolve(db);
+      };
+      request.onerror = () => {
+        dbPromise = null;
+        reject(request.error);
+      };
     });
   }
   return dbPromise;

src/core/offline-manager.ts

@@ -64,6 +64,19 @@ function loadManifest(): Promise<Record<string, Record<string, string[]>> | null
   return manifestPromise;
 }
 
+function getFallbackCalendarFiles(lang: string): string[] {
+  const files = [
+    `/data/${lang}/menaion-bundle.json`,
+    '/data/shared/fasting.json',
+    '/data/shared/menaion-daily/index.json',
+  ];
+  for (let m = 1; m <= 12; m++) {
+    const mm = String(m).padStart(2, '0');
+    files.push(`/data/${lang}/lives/${mm}.json`);
+  }
+  return files;
+}
+
 export class OfflineManager {
   private static _progress: PreloadProgress | null = null;
 
@@ -104,7 +117,7 @@ export class OfflineManager {
     for (const lang of options.languages) {
       for (const type of options.types) {
         if (type === 'calendar') {
-          const list = m?.[lang]?.calendar ?? [];
+          const list = m?.[lang]?.calendar ?? getFallbackCalendarFiles(lang);
           filesToFetch.push(...list);
         } else if (type === 'bible') {
           filesToFetch.push('/data/bible/versions.json');

src/ui/app.ts

@@ -72,7 +72,7 @@ export class App {
     document.addEventListener('touchstart', closeOpenDropdowns, { passive: true });
 
     // Close library dropdown when a nav link inside it is clicked
-    document.querySelector('nav')?.addEventListener('click', (e) => {
+    document.addEventListener('click', (e) => {
       const target = e.target as HTMLElement;
       const link = target.closest('.nav-link');
       if (link) {

src/ui/bible-view.ts

@@ -236,6 +236,9 @@ export class BibleView {
     const select = document.getElementById('book-select') as HTMLSelectElement;
     if (!select) return;
     const books = this.getBooksForVersion();
+    if (!this.currentBook || !books.some(b => b.id === this.currentBook)) {
+      this.currentBook = books[0]?.id || 'Gen';
+    }
     select.innerHTML = books.map(b =>
       `<option value="${b.id}" ${b.id === this.currentBook ? 'selected' : ''}>${b.name}</option>`
     ).join('');
@@ -247,12 +250,14 @@ export class BibleView {
     if (!select) return;
     const books = this.getBooksForVersion();
     const book = books.find(b => b.id === this.currentBook);
-    const chapters = book?.chapters ?? 50;
+    const chapters = (book && Number.isInteger(book.chapters) && book.chapters > 0) ? book.chapters : 50;
+    const parsedCh = parseInt(this.currentPassage, 10);
+    const selectedCh = isNaN(parsedCh) || parsedCh < 1 ? 1 : parsedCh;
     select.innerHTML = Array.from({ length: chapters }, (_, i) =>
-      `<option value="${i + 1}" ${i + 1 === parseInt(this.currentPassage, 10) ? 'selected' : ''}>${i + 1}</option>`
+      `<option value="${i + 1}" ${i + 1 === selectedCh ? 'selected' : ''}>${i + 1}</option>`
     ).join('');
     // Sync passage to selected chapter
-    this.currentPassage = select.value;
+    this.currentPassage = select.value || '1';
   }
 
   private async loadReading() {

src/ui/settings-view.ts

@@ -636,12 +636,52 @@ export class SettingsView {
       if (this.action === 'autopreload') {
         document.querySelectorAll('.offline-lang').forEach(el => (el as HTMLInputElement).checked = true);
         document.querySelectorAll('.offline-type').forEach(el => (el as HTMLInputElement).checked = true);
-        const bibleChevron = document.getElementById('bible-chevron');
-        if (bibleChevron) bibleChevron.click();
-        setTimeout(() => {
-          document.querySelectorAll('.bible-trans').forEach(el => (el as HTMLInputElement).checked = true);
-          document.getElementById('offline-preload')?.click();
-        }, 300);
+        const progressDiv = document.getElementById('offline-progress');
+        const progressBar = document.getElementById('offline-progress-bar');
+        const progressText = document.getElementById('offline-progress-text');
+        if (progressDiv) progressDiv.classList.remove('hidden');
+
+        const selectedLangs = LANGUAGES.map(l => l.code);
+        const selectedTypes: ('calendar' | 'bible')[] = ['calendar', 'bible'];
+
+        let bibleTrans: string[] = [];
+        try {
+          const resp = await fetch('/data/bible/versions.json');
+          const versions = await resp.json();
+          bibleTrans = versions.map((v: any) => v.id);
+        } catch {}
+
+        OfflineManager.preload({
+          languages: selectedLangs,
+          types: selectedTypes,
+          bibleTranslations: bibleTrans,
+        }).then((prog) => {
+          if (progressBar) progressBar.style.width = '100%';
+          if (progressText) {
+            progressText.textContent = prog.failed > 0
+              ? `${t.settings.offlineDone} ${prog.failed} ${t.settings.offlineFailed}`
+              : t.settings.offlineDone;
+          }
+          OfflineManager.getStats().then(stats => {
+            const statsEl = document.getElementById('offline-stats');
+            if (statsEl) {
+              statsEl.textContent = t.settings.offlineCacheInfo
+                .replace('{0}', OfflineManager.formatBytes(stats.usageBytes))
+                .replace('{2}', String(stats.cachedFiles));
+            }
+          });
+        });
+
+        const pollInterval = setInterval(() => {
+          const prog = OfflineManager.getProgress();
+          if (prog && prog.total > 0) {
+            const pct = Math.round((prog.current / prog.total) * 100);
+            if (progressBar) progressBar.style.width = `${pct}%`;
+            if (progressText) progressText.textContent = `${prog.current} / ${prog.total} ${t.settings.offlineDataTypes} — ${prog.file.substring(0, 60)}...`;
+          }
+          if (!prog || prog.done) clearInterval(pollInterval);
+        }, 200);
+
         window.history.replaceState(null, '', '#settings');
       }
     })();