V1 mostly complete except for some testing. Linting in the last step changed nearly every file which is why this commit is so larger.

tests/test_errors.py

@@ -2,7 +2,10 @@
 
 import pytest
 
-from transcription.errors import AppError, ErrorCategory, classify_unexpected_error, new_error_id
+from transcription.errors import AppError
+from transcription.errors import ErrorCategory
+from transcription.errors import classify_unexpected_error
+from transcription.errors import new_error_id
 
 
 @pytest.mark.unit