docs+cli: purge stale SFRS acronym for the CLI Standard

SFRS was a mistaken acronym that only ever meant "a feature
(description/specification)". Reword every reference across docs and
zamak-cli source to name the Spacecraft Software Dual-Mode
Self-Documenting CLI Standard (v1.0.0) in full or as "the CLI
Standard" in shorthand, per construct commit a301baf's precedent.
Ticket IDs SFRS-1..17 become CLISTD-1..17 (TODO.md, CONTRIBUTING.md,
sbom.rs), and the plural SFRSs form is gone. Renames
zamak-cli/tests/sfrs_conformance.rs -> cli_standard_conformance.rs
and the exit_code_matches_sfrs_table test fn to match; cargo check -p
zamak-cli --tests passes clean.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

Author: UnbreakableMJ