Pipeline: compile poster + add 'Open PDF in new tab' above preview

app.py

@@ -1153,7 +1153,14 @@ def run_pipeline(arxiv_url, pdf_file, openai_key, logo_files, meeting_logo_file,
     try:
         pdf_path = _compile_poster_pdf(OUTPUT_DIR, logs)
         if pdf_path and pdf_path.exists():
-            pdf_html = _pdf_to_iframe_html(pdf_path)
+            try:
+                b64 = base64.b64encode(pdf_path.read_bytes()).decode("utf-8")
+                open_tab = f"<a target='_blank' rel='noopener' href='data:application/pdf;base64,{b64}'>Open PDF in new tab</a>"
+                pdf_html = (
+                    f"<div style='margin-bottom:8px'>{open_tab}</div>" + _pdf_to_iframe_html(pdf_path)
+                )
+            except Exception:
+                pdf_html = _pdf_to_iframe_html(pdf_path)
             logs.append("🖨️ PDF ready for preview in UI.")
     except Exception as e:
         logs.append(f"⚠️ PDF compile/preview skipped: {e}")