Fix: book readiness check uses chunk_count+chroma_id as real truth; add stuck-book detection + Re-upload button in admin

app/admin/templates/admin.html

@@ -1041,16 +1041,21 @@ function renderBooks(books) {
     const coverBg = b.cover_thumbnail
       ? `background-image:url('/covers/${b.cover_thumbnail?.split('/data/covers/')[1] || ''}');background-size:cover;background-position:center;`
       : `background:linear-gradient(135deg,hsl(${Math.abs(hashCode(b.title))%360},65%,72%),hsl(${(Math.abs(hashCode(b.title))+60)%360},55%,62%));display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;`;
-    return `<tr>
+    const stuck = !['ready','active'].includes(b.status) && !(b.chunk_count > 0 && b.chroma_collection_id);
+    const stuckBadge = stuck ? `<span title="Indexing stalled — delete and re-upload" style="cursor:help;">⚠️</span>` : '';
+    return `<tr${stuck ? ' style="opacity:0.75;"' : ''}>
     <td><div style="width:40px;height:56px;border-radius:6px;overflow:hidden;flex-shrink:0;${coverBg}">${b.cover_thumbnail ? '' : esc(b.title.charAt(0))}</div></td>
-    <td><div class="fw-600">${esc(b.title)}</div></td>
+    <td><div class="fw-600">${esc(b.title)}</div>${stuck ? '<div class="text-xs" style="color:var(--yellow-dark);">Indexing stalled</div>' : ''}</td>
     <td><span class="text-muted text-sm">${esc(b.genre || '—')}</span></td>
-    <td><span class="badge badge-${b.status}">${b.status}</span></td>
+    <td><span class="badge badge-${b.status}">${b.status}</span> ${stuckBadge}</td>
     <td>${b.chunk_count || 0}</td>
     <td style="max-width:200px;" class="truncate text-xs text-muted">${esc(b.ai_summary || '—')}</td>
-    <td style="display:flex;gap:4px;">
-      <label class="btn btn-secondary btn-sm" style="cursor:pointer;margin:0;"><input type="file" accept="image/*" style="display:none;" onchange="uploadCover('${b.id}',this)">📷</label>
-      <button class="btn btn-danger btn-sm" onclick="confirmDeleteBook('${b.id}','${esc(b.title)}')">Delete</button>
+    <td style="display:flex;gap:4px;flex-wrap:wrap;">
+      ${stuck
+        ? `<button class="btn btn-primary btn-sm" onclick="repairBook('${b.id}','${esc(b.title)}')">🔄 Re-upload</button>`
+        : `<label class="btn btn-secondary btn-sm" style="cursor:pointer;margin:0;"><input type="file" accept="image/*" style="display:none;" onchange="uploadCover('${b.id}',this)">📷</label>`
+      }
+      <button class="btn btn-danger btn-sm" onclick="confirmDeleteBook('${b.id}','${esc(b.title)}')">🗑</button>
     </td>
   </tr>`;
   }).join('');
@@ -1086,6 +1091,15 @@ async function executeDeleteBook(id, title) {
   try { await apiDelete(`/admin/${authorSlug}/books/${id}`); closeModal(); toast('Book deleted', 'success'); loadBooks(); } catch(e) { toast(e.message, 'error'); }
 }
 
+async function repairBook(id, title) {
+  showModal('🔄 Re-upload Required',
+    `<div class="modal-sub">The book <strong>${esc(title)}</strong> got stuck during indexing (the server restarted mid-process).<br><br>
+     The fix is simple: <strong>delete it and re-upload the file</strong>. Indexing now runs in the background and will complete reliably.</div>`,
+    `<button class="btn btn-secondary" onclick="closeModal()">Cancel</button>
+     <button class="btn btn-danger" onclick="closeModal(); executeDeleteBook('${id}','${esc(title)}'); setTimeout(()=>nav('upload'),500);">🗑 Delete &amp; Go to Upload</button>`
+  );
+}
+
 /* ── UPLOAD ── */
 const uploadZone = document.getElementById('upload-zone');
 const fileInput = document.getElementById('file-input');

app/services/rag_pipeline.py

@@ -764,7 +764,12 @@ async def _no_context_response(
 
     if len(books) == 1:
         book = books[0]
-        if book.status not in ("ready", "active"):
+        # Book is answerable if embeddings exist in ChromaDB — status field may be stale
+        book_is_ready = (
+            book.status in ("ready", "active")
+            or (book.chunk_count and book.chunk_count > 0 and book.chroma_collection_id)
+        )
+        if not book_is_ready:
             text = (
                 f"{book.title} is still being indexed — give it a minute and ask again. "
                 "I'll be able to answer detailed questions once processing finishes."