fix(auth): expose sealed finalizer evidence

Signed-off-by: Cea Stapleton Cordasco <261786559+cea-block@users.noreply.github.com>

crates/buzz-auth/src/context/mod.rs

@@ -203,10 +203,23 @@ impl AuthContextInput {
         self.nostr_proof.authorized_transport()
     }
 
+    #[allow(dead_code)]
+    pub(crate) const fn proof_method(&self) -> AuthMethod {
+        self.nostr_proof.proof_method()
+    }
+
     #[allow(dead_code)]
     pub(crate) const fn actor_pubkey(&self) -> PublicKey {
         self.nostr_proof.actor_pubkey()
     }
+
+    #[allow(dead_code)]
+    pub(crate) const fn verified_owner_pubkey(&self) -> Option<PublicKey> {
+        match self.nostr_proof.verified_delegation() {
+            Some(delegation) => Some(delegation.owner_pubkey()),
+            None => None,
+        }
+    }
 }
 
 impl fmt::Debug for AuthContextV1 {