Move citation to end of page 1 with Zenodo DOI

- Citation now appears at end of first page (after Other Output Columns)
- Updated DOI to 10.5281/zenodo.15532316
- Removed duplicate citation from Category Distribution page

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app.py

@@ -129,6 +129,13 @@ def generate_methodology_report_pdf(categories, model, column_name, num_rows, mo
     ]))
     story.append(other_table)
 
+    # Citation at end of page 1
+    story.append(Spacer(1, 30))
+    story.append(Paragraph("Citation", heading_style))
+    story.append(Paragraph("If you use CatLLM in your research, please cite:", normal_style))
+    story.append(Spacer(1, 5))
+    story.append(Paragraph("Soria, C. (2025). CatLLM: A Python package for LLM-based text classification. DOI: 10.5281/zenodo.15532316", normal_style))
+
     # === PAGE 2: Sample Results ===
     if result_df is not None and len(result_df) > 0:
         story.append(PageBreak())
@@ -195,13 +202,6 @@ def generate_methodology_report_pdf(categories, model, column_name, num_rows, mo
         story.append(Spacer(1, 15))
         story.append(Paragraph(f"<i>Note: Percentages may sum to more than 100% as responses can be assigned to multiple categories.</i>", normal_style))
 
-    # Citation on page 3
-    story.append(Spacer(1, 30))
-    story.append(Paragraph("Citation", heading_style))
-    story.append(Paragraph("If you use CatLLM in your research, please cite:", normal_style))
-    story.append(Spacer(1, 5))
-    story.append(Paragraph("Soria, C. (2025). CatLLM: A Python package for LLM-based text classification. https://github.com/chrissoria/cat-llm", normal_style))
-
     # === PAGE 4: Classification Summary (Expanded) ===
     story.append(PageBreak())
     story.append(Paragraph("Classification Summary", title_style))