feat(naming): the config file

Owns precedence and provenance and nothing else, and never reads the
filesystem, so it is as testable as the language table.

resolve returns the value AND its source, because a setting that silently
comes from a file the user forgot about is worse than no setting at all --
config --show can then say where each effective value came from.

overlay accumulates rather than last-wins: a user has more than one.

An unknown key is reported, never fatal. A config written for a newer
colitur must still work on an older one, but silently dropping a line the
user wrote is how a typo becomes invisible.

0 files changed, 0 insertions, 0 deletions