fix(user): userctl survives leading dashes and reports failed reads

busctl and kwriteconfig6 parse a value starting with '-' as an option, so
a location like '-x' failed; '--' before the value ends option parsing
(checked against both binaries).

get ran without pipefail, so a failing busctl gave empty fields and exit
0, which the page would show as a blank form. It now reads all fields
first and, on failure, prints one error= line and exits 1.

keys listed revoked, expired or invalid primaries, keys that cannot
sign, and could label a key with a revoked uid. It now skips those.

Unsetting the signing key uses --unset-all, since git exits 5 on a
multi-valued key with --unset.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions