Apply mechanical lint fixes for golangci-lint v2.12.2 rollout

Auto-remediate style-only findings (wsl_v5, nlreturn, noinlineerr,
modernize, intrange, perfsprint, usetesting, unconvert, errorlint,
gocritic, testifylint) and rename printf-style helpers to f-suffixed
names (goprintffuncname): ui.Writer message methods, cli.ReportErrorf,
database.Fatalf, vaultik stdoutf.

internal/storage/module.go

@@ -24,6 +24,7 @@ func NewStorer(cfg *config.Config) (Storer, error) {
 	if cfg.StorageURL != "" {
 		return storerFromURL(cfg.StorageURL, cfg)
 	}
+
 	return storerFromLegacyS3Config(cfg)
 }
 
@@ -71,6 +72,7 @@ func storerFromURL(rawURL string, cfg *config.Config) (Storer, error) {
 		if err != nil {
 			return nil, fmt.Errorf("creating S3 client: %w", err)
 		}
+
 		return NewS3Storer(client), nil
 
 	case "rclone":
@@ -109,5 +111,6 @@ func storerFromLegacyS3Config(cfg *config.Config) (Storer, error) {
 	if err != nil {
 		return nil, fmt.Errorf("creating S3 client: %w", err)
 	}
+
 	return NewS3Storer(client), nil
 }