feat: daily vani

internal/repository/vani_repo.go

@@ -87,6 +87,22 @@ func (r *VaniRepo) Insert(ctx context.Context, pick *model.VaniPick) error {
 	return nil
 }
 
+// BookTitle resolves a book code to its display title (from book_meta.data.title),
+// or "" if unknown. Used to label a prose pick with its book name.
+func (r *VaniRepo) BookTitle(ctx context.Context, book string) string {
+	var raw bson.M
+	if err := r.mongo.Collection("book_meta").
+		FindOne(ctx, bson.D{{Key: "book", Value: book}}).Decode(&raw); err != nil {
+		return ""
+	}
+	if data, ok := raw["data"].(bson.M); ok {
+		if t, ok := data["title"].(string); ok {
+			return t
+		}
+	}
+	return ""
+}
+
 // --- Mongo: random candidate sampling ---
 
 // excludeIDs turns hex _id strings into a $nin ObjectID array.

internal/service/vani_service.go

@@ -87,7 +87,7 @@ func (s *VaniService) choose(ctx context.Context, exclude map[string][]string, d
 			}
 		case "prose":
 			if p, err := s.repo.SampleProse(ctx, exclude["prose"]); err == nil && p != nil {
-				return prosePick(p, day)
+				return prosePick(p, s.repo.BookTitle(ctx, p.Book), day)
 			}
 		case "transcript":
 			if t, err := s.repo.SampleTranscript(ctx, exclude["transcript"]); err == nil && t != nil {
@@ -120,7 +120,7 @@ func versePick(v *repository.VerseDoc, day time.Time) *model.VaniPick {
 	}
 }
 
-func prosePick(p *repository.ProseChapterDoc, day time.Time) *model.VaniPick {
+func prosePick(p *repository.ProseChapterDoc, bookTitle string, day time.Time) *model.VaniPick {
 	first := ""
 	if len(p.Paragraphs) > 0 {
 		first = p.Paragraphs[0]
@@ -130,11 +130,12 @@ func prosePick(p *repository.ProseChapterDoc, day time.Time) *model.VaniPick {
 		Kind:  "prose",
 		RefID: "prose:" + p.ID.Hex(),
 		Payload: model.VaniPayload{
-			Kind:     "prose",
-			Label:    "Chapter",
-			Title:    p.Title,
-			Subtitle: excerpt(first, 140),
-			Href:     proseURL(p.Book, p.Volume, p.Type, p.Slug),
+			Kind:      "prose",
+			Label:     "Chapter",
+			Title:     p.Title,
+			Subtitle:  excerpt(first, 140),
+			Href:      proseURL(p.Book, p.Volume, p.Type, p.Slug),
+			BookTitle: bookTitle,
 		},
 	}
 }