`-A` emitted hosts with empty vars, so `-F ipaddress,enc_role -A` lost the facts
it just queried. Ansible inventories are far more useful with the values inline.
- Extract factsByHost() (the {host: {fact: value}} builder) and share it between
-j and -A so the Ansible inventory attaches each host's queried fact(s) as
host vars, keyed by real fact name.
- Strengthen the Ansible test to assert host vars and add a multi-fact case.
`node-lookup -jF ipaddress,enc_role` returned `{}` because it queried a single
fact literally named "ipaddress,enc_role". Requesting several facts per host is
a natural need (e.g. pairing an address with its role).
- Split -F on commas (splitFactNames) and match any of them via an "or" over
["=","name",<n>] clauses (nameFilter); a single name keeps the plain "="
form.
- Key JSON output by each result's real fact name so all requested facts appear
under the host (previously keyed by the raw -F string).
- Update the -F flag help and add unit tests (split, single vs multi query
shape, multi-fact JSON).
pflag does not attach a space-separated value to a string flag that is grouped
with a bool flag, so `node-lookup -R -pm k8s` parsed -p and left `k8s` as a
stray positional, failing with "unknown command k8s". Only `-pm=k8s` or the
un-grouped `-p -m k8s` worked, which is surprising.
- Allow one positional argument (cobra.MaximumNArgs(1)) and fall back to it for
the match value when -m is empty (matchValue()), so -pm/-im/-ipm <value> and
a bare `-p <value>` all work. -m still wins when both are given.
- Add matchValue unit tests.
- Document the positional value and the pflag grouping quirk in AGENTS.md.
unkinben