Function source_content_hash

atomic-cli/src/commands/intent/bridge.rs:198–205

A hash of the source lift inputs, recorded in the sidecar so a later edit to the intent can be detected as making the attestation stale. This is a standalone digest of (frontmatter + body); it is NOT the vault's `content_hash` and never feeds it. `attest` writes it; `validate`/`show`/ `verify` recompute it to decide whether a sidecar is still fresh.

(inputs: &LiftInputs)

/// `content_hash` and never feeds it. `attest` writes it; `validate`/`show`/
/// `verify` recompute it to decide whether a sidecar is still fresh.
pub fn source_content_hash(inputs: &LiftInputs) -> String {
    let fm = serde_json::to_string(&inputs.frontmatter).unwrap_or_default();
    let mut hasher = blake3::Hasher::new();
    hasher.update(fm.as_bytes());
    hasher.update(b"\0");
    hasher.update(inputs.body.as_bytes());
    format!("blake3:{}", hasher.finalize().to_hex())
}

/// The state of an intent's attestation sidecar relative to the current source.
pub enum Attestation {