wip snapshot after account logout; squash into the unit commit

Model: fable-5-1

internal/cli/gen.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"io"
 	"os"
 	"os/signal"
 	"path/filepath"
@@ -235,6 +236,35 @@ func (mfa *CLIApp) runEnumeratePhase(cmd *cli.Command, s *mfer.Scanner) error {
 	return nil
 }
 
+// runScanPhase reads the enumerated files and writes the manifest to out,
+// with optional progress reporting.
+func (mfa *CLIApp) runScanPhase(
+	ctx context.Context, cmd *cli.Command, s *mfer.Scanner, out io.Writer,
+) error {
+	var (
+		scanProgress chan mfer.ScanStatus
+		scanWg       sync.WaitGroup
+	)
+
+	if cmd.Bool("progress") {
+		scanProgress = make(chan mfer.ScanStatus, 1)
+
+		scanWg.Add(1)
+
+		go reportScanProgress(scanProgress, &scanWg)
+	}
+
+	err := s.ToManifest(ctx, out, scanProgress)
+
+	scanWg.Wait()
+
+	if err != nil {
+		return fmt.Errorf("generate manifest: %w", err)
+	}
+
+	return nil
+}
+
 func (mfa *CLIApp) generateManifestOperation(
 	ctx context.Context, cmd *cli.Command,
 ) error {
@@ -253,8 +283,6 @@ func (mfa *CLIApp) generateManifestOperation(
 		return err
 	}
 
-	showProgress := cmd.Bool("progress")
-
 	// Check if output file exists
 	if exists, _ := afero.Exists(mfa.Fs, outputPath); exists && !cmd.Bool("force") {
 		return fmt.Errorf("output file %s %w", outputPath, errOutputExists)
@@ -286,25 +314,9 @@ func (mfa *CLIApp) generateManifestOperation(
 	}()
 
 	// Phase 2: Scan - read file contents and generate manifest
-	var (
-		scanProgress chan mfer.ScanStatus
-		scanWg       sync.WaitGroup
-	)
-
-	if showProgress {
-		scanProgress = make(chan mfer.ScanStatus, 1)
-
-		scanWg.Add(1)
-
-		go reportScanProgress(scanProgress, &scanWg)
-	}
-
-	err = s.ToManifest(ctx, outFile, scanProgress)
-
-	scanWg.Wait()
-
+	err = mfa.runScanPhase(ctx, cmd, s, outFile)
 	if err != nil {
-		return fmt.Errorf("generate manifest: %w", err)
+		return err
 	}
 
 	// Close file before rename to ensure all data is flushed