diff --git a/docs/roadmap/implementation.md b/docs/roadmap/implementation.md
index 049b405..788d997 100644
--- a/docs/roadmap/implementation.md
+++ b/docs/roadmap/implementation.md
@@ -360,7 +360,7 @@ preserving every durable transition and failure boundary.
 
 ## Stage 5 — Isolate Finalization And Simplify The Lifecycle Owner
 
-**Status: Pending**
+**Status: Completed**
 
 ### Goal
 
diff --git a/internal/app/runner.go b/internal/app/runner.go
index fd1fea8..1c25c36 100644
--- a/internal/app/runner.go
+++ b/internal/app/runner.go
@@ -71,10 +71,6 @@ func executePlanWithDependencies(ctx context.Context, cfg *config.Config, plan B
 		return nil, err
 	}
 
-	env := runtime.env
-	manifestPath := runtime.manifestPath
-	m := runtime.manifest
-	runID := runtime.identity.RunID
 	for _, selected := range runtime.stages {
 		runtime.stageNames = append(runtime.stageNames, selected.Name())
 		outcome, err := executeSelectedStage(runtime, selected)
@@ -88,25 +84,7 @@ func executePlanWithDependencies(ctx context.Context, cfg *config.Config, plan B
 			runtime.skipped = append(runtime.skipped, selected.Name())
 		}
 	}
-
-	if containsStage(runtime.executed, "publish") {
-		if err := runPostPublishCleanup(ctx, env, manifestPath, m, runtime.executed, runtime.dependencies.removeScopedDir); err != nil {
-			return nil, persistPostPublishCleanupFailure(
-				ctx, env.ManifestStore, manifestPath, m,
-				fmt.Errorf("post-publish cleanup incomplete: %w", err),
-				runtime.dependencies.now(),
-			)
-		}
-	}
-
-	return &RunSummary{
-		SessionID:    cfg.Session.SessionID,
-		RunID:        runID,
-		ManifestPath: manifestPath,
-		StageNames:   runtime.stageNames,
-		Executed:     runtime.executed,
-		Skipped:      runtime.skipped,
-	}, nil
+	return finalizeInvocation(runtime)
 }
 
 func stagesContainAny(stages []stage.Stage, names ...string) bool {
@@ -125,27 +103,6 @@ func stagesContainAny(stages []stage.Stage, names ...string) bool {
 	return false
 }
 
-func persistPostPublishCleanupFailure(
-	ctx context.Context,
-	sessionStore manifest.Store,
-	sessionManifestPath string,
-	sessionManifest *manifest.Manifest,
-	operationErr error,
-	at time.Time,
-) error {
-	if operationErr == nil {
-		return nil
-	}
-	if sessionManifest != nil {
-		sessionManifest.RecordFailure(at, operationErr.Error())
-	}
-	// Cleanup may have deliberately removed the selected run directory. The
-	// committed remote snapshot remains authoritative, while the session
-	// manifest records the outstanding local cleanup for the next invocation.
-	sessionErr := sessionStore.Save(ctx, sessionManifestPath, sessionManifest)
-	return errors.Join(operationErr, wrapTerminalPersistenceError("save terminal session manifest", sessionErr))
-}
-
 func persistSessionTerminalFailure(
 	ctx context.Context,
 	sessionStore manifest.Store,
diff --git a/internal/app/runner_finalization.go b/internal/app/runner_finalization.go
new file mode 100644
index 0000000..4689eb4
--- /dev/null
+++ b/internal/app/runner_finalization.go
@@ -0,0 +1,62 @@
+package app
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"time"
+
+	"gitea.maximumdirect.net/eric/narratio/internal/manifest"
+)
+
+func finalizeInvocation(runtime *invocationRuntime) (*RunSummary, error) {
+	if containsStage(runtime.executed, "publish") {
+		if err := runPostPublishCleanup(
+			runtime.ctx,
+			runtime.env,
+			runtime.manifestPath,
+			runtime.manifest,
+			runtime.executed,
+			runtime.dependencies.removeScopedDir,
+		); err != nil {
+			return nil, persistPostPublishCleanupFailure(
+				runtime.ctx,
+				runtime.manifestStore,
+				runtime.manifestPath,
+				runtime.manifest,
+				fmt.Errorf("post-publish cleanup incomplete: %w", err),
+				runtime.dependencies.now(),
+			)
+		}
+	}
+
+	return &RunSummary{
+		SessionID:    runtime.identity.SessionID,
+		RunID:        runtime.identity.RunID,
+		ManifestPath: runtime.manifestPath,
+		StageNames:   runtime.stageNames,
+		Executed:     runtime.executed,
+		Skipped:      runtime.skipped,
+	}, nil
+}
+
+func persistPostPublishCleanupFailure(
+	ctx context.Context,
+	sessionStore manifest.Store,
+	sessionManifestPath string,
+	sessionManifest *manifest.Manifest,
+	operationErr error,
+	at time.Time,
+) error {
+	if operationErr == nil {
+		return nil
+	}
+	if sessionManifest != nil {
+		sessionManifest.RecordFailure(at, operationErr.Error())
+	}
+	// Cleanup may have deliberately removed the selected run directory. The
+	// committed remote snapshot remains authoritative, while the session
+	// manifest records the outstanding local cleanup for the next invocation.
+	sessionErr := sessionStore.Save(ctx, sessionManifestPath, sessionManifest)
+	return errors.Join(operationErr, wrapTerminalPersistenceError("save terminal session manifest", sessionErr))
+}