Implement exact bootstrap recovery and artifact GC

crates/lazaret-prepared-lower/tests/prepared_lower.rs

@@ -1135,6 +1135,43 @@ fn reclaim_refuses_forged_identity_and_leases() {
     assert!(fixture.artifact_root(&artifact).exists());
 }
 
+#[test]
+fn selected_gc_is_idempotent_only_at_the_durable_reclaim_boundary() {
+    let fixture = Fixture::new();
+    let artifact = fixture
+        .store
+        .prepare(&fixture.request(
+            71,
+            &[(
+                layer(&[Entry {
+                    path: "payload",
+                    kind: EntryType::Regular,
+                    data: b"gc",
+                    target: None,
+                    mode: 0o644,
+                }]),
+                OCI_TAR,
+            )],
+        ))
+        .unwrap();
+    let id = artifact.prepared_artifact_id;
+    assert!(fixture.store.gc_artifacts(&[id, id]).is_err());
+
+    let lease = lazaret_core::records::ArtifactLease {
+        prepared_artifact_id: id,
+        domain_id: lazaret_core::identity::DomainId::new([72; 32]),
+        generation_id: lazaret_core::identity::GenerationId::new(1),
+    };
+    fixture.catalog.acquire_lease(&lease).unwrap();
+    assert!(fixture.store.gc_artifacts(&[id]).is_err());
+    fixture.catalog.release_lease(&lease).unwrap();
+
+    let result = fixture.store.gc_artifacts(&[id]).unwrap();
+    assert_eq!(result[0].prepared_artifact_id, id);
+    assert_eq!(result[0].outcome, ReclaimOutcome::Removed);
+    assert!(fixture.store.gc_artifacts(&[id]).is_err());
+}
+
 #[test]
 fn destination_layout_is_materialized_and_canonical_in_artifact_identity() {
     let fixture = Fixture::new();