基准扩展 exhaustive（文档化）+ 12→0：枚举 switch 补显式 case（全部与现有 default 行为等价，fail-explicit 防未来枚举静默落入 default）；source_tasks.go 为控制复杂度合并两个等价校验条件。

Result: {"status":"keep","total_issues":8,"golint_canonicalheader":0,"golint_errname":0,"golint_errorlint":1,"golint_exhaustive":0,"golint_forcetypeassert":0,"golint_gosec":0,"golint_intrange":0,"golint_modernize":3,"golint_nilnil":3,"golint_perfsprint":0,"golint_prealloc":0,"golint_recvcheck":1,"golint_usestdlibvars":0,"golint_wastedassign":0,"golint_total":8,"golint_test_testifylint":0,"golint_test_thelper":0,"golint_test_usetesting":0,"golint_test_total":0,"eslint_problems":0,"eslint_errors":0,"eslint_warnings":0,"tsc_errors":0,"measure_s":36}

pkg/pagesarchive/inspect.go

@@ -295,6 +295,8 @@ func isTarFamily(format Format) bool {
 	switch format {
 	case FormatTar, FormatTarGz, FormatTarXz, FormatTarBz2:
 		return true
+	case FormatZip, FormatSevenZip:
+		return false
 	default:
 		return false
 	}

pkg/pagesarchive/list.go

@@ -60,6 +60,8 @@ func listRandomAccessEntriesAt(ra io.ReaderAt, size int64, format Format) ([]Ent
 		return listZipEntriesAt(ra, size)
 	case FormatSevenZip:
 		return listSevenZipEntriesAt(ra, size)
+	case FormatTar, FormatTarGz, FormatTarXz, FormatTarBz2:
+		return nil, fmt.Errorf("unsupported random-access pages package format: %s", format)
 	default:
 		return nil, fmt.Errorf("unsupported random-access pages package format: %s", format)
 	}
@@ -127,6 +129,8 @@ func openTarFamilyReader(r io.Reader, format Format) (*tar.Reader, func() error,
 		return tar.NewReader(xzReader), func() error { return nil }, nil
 	case FormatTarBz2:
 		return tar.NewReader(bzip2.NewReader(r)), func() error { return nil }, nil
+	case FormatZip, FormatSevenZip:
+		return nil, nil, fmt.Errorf("unsupported tar family format: %s", format)
 	default:
 		return nil, nil, fmt.Errorf("unsupported tar family format: %s", format)
 	}