Add artifact provenance and stage skip outcomes

internal/artifacts/store.go

@@ -1,16 +1,23 @@
 package artifacts
 
-import "os"
+import (
+	"os"
+
+	"gitea.maximumdirect.net/eric/narratio/internal/artifactmodel"
+)
 
 // Ref identifies a pipeline artifact and its local/remote coordinates.
 type Ref struct {
-	Kind         string
-	Category     string
-	SessionID    string
-	RelativePath string
-	AbsolutePath string
-	RemoteKey    string
-	Checksum     string
+	Kind               string
+	SourceID           string
+	Category           string
+	SessionID          string
+	RelativePath       string
+	AbsolutePath       string
+	RemoteKey          string
+	Checksum           string
+	Contract           *artifactmodel.ContractMetadata
+	ExternalProvenance *artifactmodel.ExternalProvenance
 }
 
 // Store is the local artifact/workdir abstraction used by orchestration code.