fix: yield after each Surya batch — live progress, no more silent hang

smoke_signal_tab.py

@@ -2243,6 +2243,10 @@ def run_ocr(page_selection: str = "", page_exclusion: str = "", replace_book_que
                             img.close()
                         except Exception:
                             pass
+                # Stream progress after each batch
+                done_pages = min(start + batch_size, len(ocr_targets))
+                log.append(log_line(f"  ✓ {book_id}: batch {start//batch_size + 1} complete ({done_pages}/{len(ocr_targets)} pages)"))
+                yield _ocr_status_html(), "\n".join(log)
 
         log.append(log_line(f"  → {book_id}: batch OCR complete — building review queue"))
         yield _ocr_status_html(), "\n".join(log)  # stream: batch OCR done