Sanitize proposal text by removing unwanted characters before replacement

src/app.py

@@ -79,7 +79,8 @@ async def generate_proposal(data: dict):
                                         architecture_diagram_path, width=Inches(6)
                                     )
                             else:
-                                para.text = para.text.replace(f"{{{key}}}", value)
+                                clean_value = re.sub(r"[*#`]", "", value)
+                                para.text = para.text.replace(f"{{{key}}}", clean_value)
                                 for run in para.runs:
                                     run.font.size = Pt(14)
                                     run.font.name = "Arial"