Refactor: improve code quality and worker flow

Backend/internal/bootstrap/service_test.go

@@ -9,6 +9,66 @@ import (
 	"testing"
 )
 
+type fakeRow struct {
+	scan func(dest ...any) error
+}
+
+func (row fakeRow) Scan(dest ...any) error {
+	return row.scan(dest...)
+}
+
+func TestScanInstallationRecordDefaultsMaterializationStatus(t *testing.T) {
+	record, err := scanInstallationRecord(fakeRow{scan: func(dest ...any) error {
+		*(dest[0].(*string)) = "installation-1"
+		*(dest[1].(*string)) = "MangoPig"
+		*(dest[2].(*string)) = "personal"
+		*(dest[3].(*string)) = "local"
+		*(dest[4].(*string)) = "http"
+		*(dest[5].(*string)) = "localhost"
+		*(dest[6].(*bool)) = true
+		*(dest[7].(*string)) = ""
+		*(dest[8].(**string)) = nil
+		return nil
+	}})
+	if err != nil {
+		t.Fatalf("scanInstallationRecord: %v", err)
+	}
+
+	if record.MaterializationStatus != materializationNotStarted {
+		t.Fatalf("expected default materialization status %q, got %q", materializationNotStarted, record.MaterializationStatus)
+	}
+	if record.MaterializationError != nil {
+		t.Fatalf("expected nil materialization error, got %#v", record.MaterializationError)
+	}
+}
+
+func TestScanInstallationRecordPreservesMaterializationFields(t *testing.T) {
+	failure := "projection rebuild failed"
+
+	record, err := scanInstallationRecord(fakeRow{scan: func(dest ...any) error {
+		*(dest[0].(*string)) = "installation-2"
+		*(dest[1].(*string)) = "MangoPig"
+		*(dest[2].(*string)) = "personal"
+		*(dest[3].(*string)) = "local"
+		*(dest[4].(*string)) = "http"
+		*(dest[5].(*string)) = "localhost"
+		*(dest[6].(*bool)) = true
+		*(dest[7].(*string)) = materializationFailed
+		*(dest[8].(**string)) = &failure
+		return nil
+	}})
+	if err != nil {
+		t.Fatalf("scanInstallationRecord: %v", err)
+	}
+
+	if record.MaterializationStatus != materializationFailed {
+		t.Fatalf("expected materialization status %q, got %q", materializationFailed, record.MaterializationStatus)
+	}
+	if record.MaterializationError == nil || *record.MaterializationError != failure {
+		t.Fatalf("expected materialization error %q, got %#v", failure, record.MaterializationError)
+	}
+}
+
 func TestEnsureBootstrapPOSIXSkeletonInitializesEmptyRoot(t *testing.T) {
 	rootPath := filepath.Join(t.TempDir(), "POSIX")
 	t.Setenv("POSIX_ROOT", rootPath)