Debug preview: use served-file iframe instead of data: base64 for all debug views

app.py

@@ -732,12 +732,8 @@ def debug_compile_output_zip():
         )
 
     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>"
-        html = (
-            f"<div style='margin-bottom:8px'>{open_tab}</div>"
-            + _pdf_to_iframe_html(pdf_path, height="700px")
-        )
+        # Use served file path to avoid data: URI issues
+        html = _pdf_to_iframe_file(pdf_path, height="700px")
         _write_logs(LOG_PATH, logs)
         return html
     except Exception as e:
@@ -851,12 +847,7 @@ def debug_compile_last_pipeline_zip():
             + "</pre>"
         )
     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>"
-        html = (
-            f"<div style='margin-bottom:8px'>{open_tab}</div>"
-            + _pdf_to_iframe_html(pdf_path, height="700px")
-        )
+        html = _pdf_to_iframe_file(pdf_path, height="700px")
         _write_logs(LOG_PATH, logs)
         return html
     except Exception as e:
@@ -959,12 +950,7 @@ def debug_compile_uploaded_zip(zip_file):
             + "</pre>"
         )
     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>"
-        html = (
-            f"<div style='margin-bottom:8px'>{open_tab}</div>"
-            + _pdf_to_iframe_html(pdf_path, height="700px")
-        )
+        html = _pdf_to_iframe_file(pdf_path, height="700px")
         _write_logs(LOG_PATH, logs)
         return html
     except Exception as e: