syscfg 20260422

NEWS:
* Fixed EACCES being returned when the target and its parent are both missing.

* Now supports `--no-color` to disable all ANSI color escape sequences in
  syscfg and its API. Clients can still manually issue them; it is expected
  that clients themselves support $NO_COLOR, which will additionally be set by
  syscfg.

* Now supports `--status-pager` (and `-p`/`--pager`) to inspect the output of
  a client. By default, `less` is used (hardcoded) if no pager is specified.

- Filtered log of core changes:
6c65b3f syscfg: Support `--status-pager`
9f5a2cb syscfg: Support `--no-color`
2947ad9 syscfg: Fix EACCES error when no parents

- Complete log between 20260410 and 20260422:
7f4b1a4 syscfg 20260422
6c65b3f syscfg: Support `--status-pager`
9f5a2cb syscfg: Support `--no-color`
2947ad9 syscfg: Fix EACCES error when no parents
05c288a doc: Clarify how $CLIENT_NAME is manually specified
7dce754 README.md: Update showcase for 20260410