Add independent MCP PDF report delivery

app.py

@@ -32,10 +32,8 @@ from conversation_service import (
 from ollama_nlu import OllamaNLUClient
 from pdf_report import (
     ReportValidationError,
-    report_from_calculation_result,
-    render_roll_report,
-    safe_report_filename,
 )
+from roll_report_service import create_roll_calculation_pdf
 from roll_calculation import (
     calculate_product_length,
     calculate_roll,
@@ -325,16 +323,10 @@ def create_machine_max_product_length_calculation():
 
 
 def _create_pdf(calculation_request):
-    result = calculate_roll(calculation_request, build_info=BUILD_INFO)
-    report = report_from_calculation_result(result)
-    generated_at = datetime.now().astimezone()
-    pdf = render_roll_report(
-        report,
-        generated_at=generated_at,
+    pdf, filename, _ = create_roll_calculation_pdf(
+        calculation_request,
         build_info=BUILD_INFO,
     )
-    article_number = report["article"]["number"] if report["article"] else None
-    filename = safe_report_filename(article_number, generated_at)
     return pdf, filename