riccione/signum

AI Summary: This issue proposes adding integration tests to the project. No further details or specific requirements are provided, indicating a need for initial discussion to define the scope, strategy, and implementation plan for these tests.

AI Summary: This issue proposes updating the command-line flags for excluding ambiguous characters from generated passwords. It suggests adopting `-B` as the short flag and `--ambiguous` as the long flag, to align with the `pwgen` utility's convention for this functionality.