syscfg 20260620

NEWS:
* Fixed 7660e94 ("syscfg: Fix `.` positional parameters pollution") for
  dash / strict POSIX shell implementations. Positional parameters are now
  reliable across all tested shells: bash, dash, and ksh.

- Filtered log of core changes:
1363d96 Fixup "syscfg: Fix `.` positional parameters pollution"

- Complete log between 20260619 and 20260620:
5f29322 syscfg 20260620
1363d96 Fixup "syscfg: Fix `.` positional parameters pollution"