code smell: duplicate strings that must agree with each other are not constants

There are several duplicated instances of strings for file names and directories.
These should be shared constants, as they must be kept in step.

Search the repository for repeated string literals representing file names and directories, then identify the related references that must stay consistent. Define shared constants and replace the duplicates; the change is done when those values have one shared definition and the existing project behavior remains intact.

Written by the indexing model from the issue text.