Terminology: retire the "SFRS" acronym

"SFRS" was introduced by mistake — it only ever meant "a feature
(description/specification)," never a real external standard name.
Every mention now reads "the CLI Standard" / "the Spacecraft Software
Dual-Mode Self-Documenting CLI Standard (v1.0.0)", following the
construct-repo a301baf naming precedent.

Author: UnbreakableMJ

CLAUDE.md

@@ -14,7 +14,7 @@ src/
   cert_authority.rs    @cert-authority / @revoked parser + HashedHost
   relay.rs             bidirectional stdin/stdout/stderr relay
   config.rs            AnvilConfig builder; per-provider constructors
-  error.rs             unified error + SFRS exit codes
+  error.rs             unified error + the canonical exit-code map
   algorithms.rs        KEX/cipher/MAC catalogue + OpenSSH +/-/^/replace + denylist
   retry.rs             RetryPolicy + transient/fatal classifier + jittered backoff
   keygen.rs            Ed25519/ECDSA/RSA keygen in OpenSSH format
@@ -78,7 +78,7 @@ cargo fmt --check
 - **Pinned host keys** — SHA-256 fingerprints for GitHub, GitLab, and Codeberg are embedded in `src/hostkey.rs`.  Update them by fetching the official fingerprint pages and running `cargo test` to verify.
 - **stdout stays clean** — diagnostic output goes to stderr.  The library deliberately exposes no stdout-touching APIs; output framing is the consumer's concern.
 - **Passphrase zeroization** — any `String` holding a passphrase must be wrapped in `Zeroizing<String>`.
-- **Exit codes (when consumed via Gitway's SFRS error mapping):**
+- **Exit codes (when consumed via Gitway's CLI-Standard error mapping):**
   - `0` — success
   - `1` — general / unexpected error
   - `2` — usage error (bad arguments, invalid configuration)

src/diagnostic.rs

@@ -18,7 +18,7 @@
 //!
 //! JSON mode already carries `timestamp` and `command` in its structured
 //! `{"error": {...}}` blob, so callers should skip this helper on that
-//! path.  Stdout is always left untouched (SFRS Rule 1) — the diagnostic
+//! path.  Stdout is always left untouched (CLI Standard Rule 1) — the diagnostic
 //! writes exclusively to stderr.
 
 use std::path::PathBuf;

src/error.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 // Rust guideline compliant 2026-03-30
-// Updated 2026-04-12: added error_code(), exit_code(), hint() for SFRS Rule 2/5
+// Updated 2026-04-12: added error_code(), exit_code(), hint() for CLI Standard Rule 2/5
 //! Error types for `anvil-ssh`.
 //!
 //! # Examples
@@ -257,7 +257,7 @@ impl AnvilError {
         }
     }
 
-    /// Returns an upper-snake-case error code for structured JSON output (SFRS Rule 5).
+    /// Returns an upper-snake-case error code for structured JSON output (CLI Standard Rule 5).
     ///
     /// | Code | Exit code | Condition |
     /// |------|-----------|-----------|
@@ -280,7 +280,7 @@ impl AnvilError {
         }
     }
 
-    /// Returns the numeric process exit code for this error (SFRS Rule 2).
+    /// Returns the numeric process exit code for this error (CLI Standard Rule 2).
     ///
     /// | Code | Meaning |
     /// |------|---------|
@@ -312,7 +312,7 @@ impl AnvilError {
     /// [`Display`](std::fmt::Display) output already says what went wrong).
     ///
     /// Emitted on stderr after the error message in human mode, and
-    /// carried as the `hint` field in `--json` output (SFRS Rule 5).
+    /// carried as the `hint` field in `--json` output (CLI Standard Rule 5).
     #[must_use]
     pub fn hint(&self) -> &str {
         if let Some(h) = self.custom_hint.as_deref() {

src/session.rs

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 // Rust guideline compliant 2026-03-30
-// Updated 2026-04-12: added verified_fingerprint tracking for SFRS JSON output
+// Updated 2026-04-12: added verified_fingerprint tracking for the CLI Standard's JSON output
 //! SSH session management (FR-1 through FR-5, FR-9 through FR-17).
 //!
 //! [`AnvilSession`] wraps a russh [`client::Handle`] and exposes the