Implement direct Notarius extraction execution

internal/artifacts/paths.go

@@ -86,6 +86,36 @@ func SessionRunStageDirForCampaign(rootDir, campaign, sessionID, runID, stageNam
 	return filepath.Join(SessionRunRootForCampaign(rootDir, campaign, sessionID, runID), stageName)
 }
 
+// SessionRunExtractDirForCampaign returns the invocation-local extraction directory.
+func SessionRunExtractDirForCampaign(rootDir, campaign, sessionID, runID string) string {
+	return SessionRunStageDirForCampaign(rootDir, campaign, sessionID, runID, "extract")
+}
+
+// SessionRunNotariusReceiptPathForCampaign returns the invocation-local receipt path.
+func SessionRunNotariusReceiptPathForCampaign(rootDir, campaign, sessionID, runID string) string {
+	return filepath.Join(SessionRunExtractDirForCampaign(rootDir, campaign, sessionID, runID), "notarius.receipt.json")
+}
+
+// SessionRunNotariusLogPathForCampaign returns the invocation-local stderr log path.
+func SessionRunNotariusLogPathForCampaign(rootDir, campaign, sessionID, runID string) string {
+	return filepath.Join(SessionRunExtractDirForCampaign(rootDir, campaign, sessionID, runID), "notarius.stderr.log")
+}
+
+// SessionRunNotariusOutputRootForCampaign returns the invocation-local Notarius output root.
+func SessionRunNotariusOutputRootForCampaign(rootDir, campaign, sessionID, runID string) string {
+	return filepath.Join(SessionRunExtractDirForCampaign(rootDir, campaign, sessionID, runID), "notarius-output")
+}
+
+// SessionNotariusBundleDirForCampaign returns one immutable durable bundle destination.
+func SessionNotariusBundleDirForCampaign(rootDir, campaign, sessionID, runID string) string {
+	return filepath.Join(
+		SessionWorkDirForCampaign(rootDir, campaign, sessionID),
+		config.PathArtifactsDirSegment,
+		"notarius",
+		runID,
+	)
+}
+
 // SessionSpoolAudioDir returns the campaign/session/run scoped local spool audio path.
 func SessionSpoolAudioDir(spoolRoot, campaign, sessionID, runID string) string {
 	return filepath.Join(spoolRoot, campaign, sessionID, runID, config.PathAudioDirSegment)