visible-to-is-optional-filter
IN premise
`_parse_visible_to` returns `None` when `--visible-to` is absent, which the API interprets as "no access restriction"; it never defaults to an empty list.
Summary
When no visibility filter is specified on the command line, the system treats this as unrestricted access rather than restricted-to-nobody. This matters because defaulting to an empty list instead would silently hide all results, making the tool appear broken when the user simply omitted an optional flag.
Details
| Source | entries/2026/04/24/reasons_lib-cli.md |