Feat: Organize script to work in CLI

test/test_e2e.py

@@ -16,7 +16,7 @@ def template_path(tmp_path):
 \\begin{document}
 First document.
 
-Subject {{ subject }}
+Subject {{ number }}
 \\end{document}
         """
         )
@@ -43,7 +43,8 @@ def test_with_default_planner(template_path, jinja2_env, tmp_path):
         },
     }
 
-    bopytex(**options)
+    for message in bopytex(**options):
+        pass
 
     assert Path("joined_source.pdf").exists()