feat: Remove deprecated body fat percentage chart and integrate master chart for report generation

- Deleted the old body fat percentage chart image.
- Updated report generation to load the new body fat percentage master chart for improved accuracy and consistency.
- Refactored context generation to reference the new chart in the report structure.

app/services/report_generator.py

@@ -404,6 +404,23 @@ class ReportGeneratorService:
             print(f"Warning: Could not generate body fat percent chart: {e}")
             graphs_dict["body_fat_percent"] = ""
 
+        # Load static body fat percentage master chart for page 18
+        master_chart_path = Path("app/body_fat_percentage_master_chart.png")
+        if master_chart_path.exists():
+            try:
+                with open(master_chart_path, "rb") as f:
+                    graphs_dict["body_fat_percentage_master_chart"] = base64.b64encode(
+                        f.read()
+                    ).decode("utf-8")
+            except Exception as e:
+                print(f"Warning: Could not load body fat percentage master chart: {e}")
+                graphs_dict["body_fat_percentage_master_chart"] = ""
+        else:
+            print(
+                f"Warning: Body fat percentage master chart not found at {master_chart_path}"
+            )
+            graphs_dict["body_fat_percentage_master_chart"] = ""
+
         # Generate spirometry chart
         print("Step 4: Generating spirometry chart...")
         try:
@@ -419,6 +436,7 @@ class ReportGeneratorService:
             print("Spirometry chart generated successfully")
         except Exception as e:
             import traceback
+
             error_details = traceback.format_exc()
             print(f"Warning: Could not generate spirometry chart: {e}")
             print(f"Error details: {error_details}")