Format Markdown with prettier in script/fmt and script/fmt-check

script/fmt and script/fmt-check now run prettier over all Markdown
after the Go step. The prettier config, package.json, yarn.lock and the
node and yarn steps of script/bootstrap are copied from sneak/prompts
with the same pinned versions.

script/bootstrap also installs curl when missing: script/install-go
needs it, so a host with only docker and git stopped there.

Model: opus-5-5

.prettierignore

@@ -0,0 +1,2 @@
+node_modules/
+yarn.lock

.prettierrc

@@ -0,0 +1,4 @@
+{
+    "tabWidth": 4,
+    "proseWrap": "always"
+}

README.md

@@ -32,8 +32,8 @@ mkdir /Volumes/usbstick/mybackup
 # (System Settings → Privacy & Security → Full Disk Access), otherwise
 # the backup will abort with a permission error on protected directories
 
-# run your first backup (the default config backs up ~ and /Applications
+# run your first backup (the default config backs up ~, and /Applications
-# with sensible excludes)
+# on macOS only, with sensible excludes)
 vaultik snapshot create
 
 # see what you have
@@ -957,7 +957,9 @@ development workflow, and the Makefile targets are thin shims that call
 them. We provide:
 
 * `script/bootstrap` — install all development dependencies (Go, Go
-  module download). A host without Go gets the `go.mod` version through
+  module download, and node, yarn and `prettier` for Markdown). Node
+  comes from the host, or else at a pinned version through `nvm`. A
+  host without Go gets the `go.mod` version through
   `script/install-go`, in `.tool/go`, which `script/bootstrap` itself,
   the `Makefile`, `script/fmt`, `script/fmt-check`, `script/precommit`
   and `script/release` add to their `PATH`. It
@@ -1011,9 +1013,11 @@ them. We provide:
   needs a *local* daemon. It is a developer convenience and never a
   gate: no gate reads its exit status. Run `make lint` afterwards to
   find out whether the tree is clean.
-* `script/fmt` — format all code (writes)
+* `script/fmt` — format all code (writes): Go with `go fmt`, Markdown
+  with `prettier`
 * `script/fmt-check` — check formatting (read-only). It runs `gofmt` on
-  the host, over every Go file outside `.tool`.
+  the host, over every Go file outside `.tool`, and `prettier --check`
+  over every Markdown file.
 * `script/check` — run `script/test`, `script/lint`, and
   `script/fmt-check`.
 * `script/docker` — build the Docker image tagged via

TODO.md

@@ -24,6 +24,17 @@ owner's; a `v*` tag runs the release build in
 
 # Completed Steps
 
+- 2026-11-10: Printed the status and progress lines of `remote info`
+  and `snapshot verify` through `internal/ui`, with its marker and
+  color, as the README describes
+  ([issue #410](https://git.eeqj.de/sneak/vaultik/issues/410)). Their
+  reports stay plain.
+
+- 2026-11-10: Made `config init` write the `apps` snapshot, which backs
+  up `/Applications`, only on macOS
+  ([issue #408](https://git.eeqj.de/sneak/vaultik/issues/408)). On
+  Linux the first `snapshot create` stopped on the missing directory.
+
 - 2026-10-15: Stopped `snapshot create --prune` pruning after a backup
   in which a volume mounted below a configured path in an earlier
   snapshot of the same name was not mounted

internal/cli/app.go

@@ -90,7 +90,7 @@ func setupGlobals(
 // blank line. Used both from the fx hook (for subcommand invocations) and
 // from the root cobra Run handler (for `vaultik` with no subcommand).
 func writeStartupBanner(w *ui.Writer, startTime time.Time, shortCommit string) {
-	w.Bannerf("%s %s by %s (commit %s, built on %s) starting up at %s.",
+	w.Bannerf("%s %s by %s (commit %s, commit date %s) starting up at %s.",
 		globals.Appname, globals.Version, globals.Author,
 		shortCommit, globals.CommitDate,
 		startTime.Format(time.RFC3339))

internal/cli/config.go

@@ -8,6 +8,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"reflect"
+	"runtime"
 	"slices"
 	"strconv"
 	"strings"
@@ -30,7 +31,7 @@ const configSetArgs = 2
 // parent config dirs (e.g. ~/.config) are conventionally traversable.
 const configDirMode = 0o755
 
-// configYAMLIndent matches the 2-space indentation of defaultConfigTemplate,
+// configYAMLIndent matches the 2-space indentation of the default config,
 // so `config set` writes the file back with the same indentation rather than
 // yaml.Marshal's 4-space default.
 const configYAMLIndent = 2
@@ -50,7 +51,22 @@ var (
 			"so the file was not changed")
 )
 
-const defaultConfigTemplate = `# vaultik configuration
+// macOS is the value of runtime.GOOS on macOS.
+const macOS = "darwin"
+
+// defaultConfigText returns the file `config init` writes on the operating
+// system goos, named as runtime.GOOS names it. Only macOS gets the apps
+// snapshot, since /Applications exists nowhere else.
+func defaultConfigText(goos string) string {
+	if goos == macOS {
+		return defaultConfigHead + appsSnapshotConfig + defaultConfigTail
+	}
+
+	return defaultConfigHead + defaultConfigTail
+}
+
+// defaultConfigHead is the default config up to the end of the home snapshot.
+const defaultConfigHead = `# vaultik configuration
 # Documentation: https://sneak.berlin/go/vaultik
 
 # ─── REQUIRED ────────────────────────────────────────────────────────────────
@@ -168,7 +184,10 @@ snapshots:
       - "/Movies/ProxyMedia"
       - "/Music/iTunes/Album Artwork"
       - "/Pictures/iPod Photo Cache"
+`
 
+// appsSnapshotConfig is the apps snapshot of the default config.
+const appsSnapshotConfig = `
   # Third-party applications. OS-provided apps live in /System/Applications
   # on modern macOS and are never in /Applications, but Apple-installed
   # App Store apps (Safari, GarageBand, iWork, iMovie) are excluded since
@@ -189,7 +208,10 @@ snapshots:
       - "/Steam.app"
       - "/VirtualBox.app"
       - "/Utilities/Adobe Installers"
+`
 
+// defaultConfigTail is the default config after the snapshots.
+const defaultConfigTail = `
 # Storage backend (pick ONE of the three forms below).
 #
 # S3-compatible:
@@ -311,7 +333,8 @@ on macOS, ~/.config/ on Linux, /etc/vaultik/ as root).`,
 				return fmt.Errorf("creating config directory %s: %w", dir, err)
 			}
 
-			err = os.WriteFile(path, []byte(defaultConfigTemplate), configFileMode)
+			err = os.WriteFile(path, []byte(defaultConfigText(runtime.GOOS)),
+				configFileMode)
 			if err != nil {
 				return fmt.Errorf("writing config file: %w", err)
 			}
@@ -560,7 +583,7 @@ func yamlPathOnly(root *yaml.Node, keys []string) (*yaml.Node, error) {
 }
 
 // marshalConfigYAML renders a config document tree with 2-space indentation,
-// matching defaultConfigTemplate. yaml.Marshal defaults to 4 spaces, which
+// matching the default config. yaml.Marshal defaults to 4 spaces, which
 // would reindent the whole file on the first `config set` despite the promise
 // to preserve formatting.
 func marshalConfigYAML(root *yaml.Node) ([]byte, error) {

internal/cli/config_test.go

@@ -13,14 +13,15 @@ import (
 	"sneak.berlin/go/vaultik/internal/ui"
 )
 
-// TestDefaultConfigTemplateParses ensures the init template is valid YAML
+// TestDefaultConfigParsesOnMacOS ensures the config `config init` writes on
-// that unmarshals into the Config struct with the expected snapshots.
+// macOS is valid YAML that unmarshals into the Config struct with the
-func TestDefaultConfigTemplateParses(t *testing.T) {
+// expected snapshots.
+func TestDefaultConfigParsesOnMacOS(t *testing.T) {
 	t.Parallel()
 
 	var cfg config.Config
 
-	err := yaml.Unmarshal([]byte(defaultConfigTemplate), &cfg)
+	err := yaml.Unmarshal([]byte(defaultConfigText("darwin")), &cfg)
 	if err != nil {
 		t.Fatalf("default config template is not valid YAML: %v", err)
 	}
@@ -58,6 +59,39 @@ func TestDefaultConfigTemplateParses(t *testing.T) {
 	}
 }
 
+// TestDefaultConfigOnLinux checks that the config `config init` writes on
+// Linux loads with its home snapshot and without the apps snapshot, whose
+// /Applications exists only on macOS.
+func TestDefaultConfigOnLinux(t *testing.T) {
+	t.Parallel()
+
+	path := filepath.Join(t.TempDir(), "config.yml")
+
+	err := os.WriteFile(path, []byte(defaultConfigText("linux")), configFileMode)
+	if err != nil {
+		t.Fatalf("write config: %v", err)
+	}
+
+	err = writeConfigSet(ui.NewWithColor(&bytes.Buffer{}, false),
+		path, "storage_url", "file:///mnt/backups")
+	if err != nil {
+		t.Fatalf("config set storage_url: %v", err)
+	}
+
+	cfg, err := config.Load(path)
+	if err != nil {
+		t.Fatalf("config.Load: %v", err)
+	}
+
+	if _, ok := cfg.Snapshots["home"]; !ok {
+		t.Error("expected 'home' snapshot in the Linux default config")
+	}
+
+	if _, ok := cfg.Snapshots["apps"]; ok {
+		t.Error("the Linux default config should have no 'apps' snapshot")
+	}
+}
+
 // testRecipient is a valid age public key.
 const testRecipient = "age1278m9q7dp3chsh2dcy82qk27v047zywyvtxwnj4cvt0z65jw6a7q5dqhfj"
 
@@ -71,7 +105,7 @@ func TestConfigSetRecipientOnFreshConfig(t *testing.T) {
 
 	path := filepath.Join(t.TempDir(), "config.yml")
 
-	err := os.WriteFile(path, []byte(defaultConfigTemplate), configFileMode)
+	err := os.WriteFile(path, []byte(defaultConfigText(macOS)), configFileMode)
 	if err != nil {
 		t.Fatalf("write config: %v", err)
 	}
@@ -220,7 +254,7 @@ func TestConfigSetKeepsFileThatWouldNotLoad(t *testing.T) {
 		{levelReference, "blob_size_limit", "1MB",
 			"blob_size_limit must be at least"},
 		// The type check on a config that does not load yet.
-		{defaultConfigTemplate, "snapshots.apps.paths", "/srv",
+		{defaultConfigText(macOS), "snapshots.apps.paths", "/srv",
 			"into []string"},
 		// The type check on a config that cannot be read here.
 		{configWithUnsetReference, "snapshots.home.paths", "/x",
@@ -380,7 +414,7 @@ func loadAfterConfigSet(t *testing.T, key, value string) *config.Config {
 
 	path := filepath.Join(t.TempDir(), "config.yml")
 
-	err := os.WriteFile(path, []byte(defaultConfigTemplate), configFileMode)
+	err := os.WriteFile(path, []byte(defaultConfigText(macOS)), configFileMode)
 	if err != nil {
 		t.Fatalf("write config: %v", err)
 	}

internal/cli/entry_banner_test.go

@@ -13,6 +13,7 @@ import (
 	"github.com/adrg/xdg"
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
+	"sneak.berlin/go/vaultik/internal/globals"
 )
 
 // Command words and flags used to build argument vectors below. They are
@@ -112,6 +113,35 @@ func TestBannerStillPrintedWithoutSuppressingFlag(t *testing.T) {
 	}
 }
 
+// TestBannerLabelsCommitDate checks that the banner prints the commit
+// and the commit date, each after its own label. Commit and CommitDate
+// get different values, so printing the wrong one fails.
+//
+//nolint:paralleltest // sets globals.Commit and globals.CommitDate
+func TestBannerLabelsCommitDate(t *testing.T) {
+	const (
+		commit     = "abc1234"
+		commitDate = "2026-11-09"
+	)
+
+	previousCommit, previousCommitDate := globals.Commit, globals.CommitDate
+
+	t.Cleanup(func() {
+		globals.Commit = previousCommit
+		globals.CommitDate = previousCommitDate
+	})
+
+	globals.Commit = commit
+	globals.CommitDate = commitDate
+
+	var banner bytes.Buffer
+
+	emitStartupBanner(nil, &banner)
+
+	assert.Contains(t, banner.String(),
+		"(commit "+commit+", commit date "+commitDate+")")
+}
+
 // TestBannerSuppressedInArgs covers the suppression scan directly,
 // including the flags that suppressed the banner before --json joined
 // them, so that adding --json cannot regress them.

internal/cli/version.go

@@ -38,7 +38,7 @@ func writeVersion(out *ui.Writer) {
 
 	_, _ = fmt.Fprintf(w, "vaultik %s\n", globals.Version)
 	_, _ = fmt.Fprintf(w, "  commit:      %s\n", globals.Commit)
-	_, _ = fmt.Fprintf(w, "  build date: %s\n", globals.CommitDate)
+	_, _ = fmt.Fprintf(w, "  commit date: %s\n", globals.CommitDate)
 	_, _ = fmt.Fprintf(w, "  go:          %s\n", runtime.Version())
 	_, _ = fmt.Fprintf(w, "  os/arch:     %s/%s\n", runtime.GOOS, runtime.GOARCH)
 	_, _ = fmt.Fprintf(w, "  author:      %s\n", globals.Author)

internal/cli/version_test.go

@@ -2,6 +2,7 @@ package cli_test
 
 import (
 	"bytes"
+	"runtime"
 	"strings"
 	"testing"
 
@@ -49,6 +50,42 @@ func TestVersionCommandReportsBuildVersion(t *testing.T) {
 	}
 }
 
+// TestVersionCommandReportLines checks the label, padding and value of
+// every line of the report. Commit and CommitDate get different values,
+// so a line that prints the wrong one fails.
+//
+//nolint:paralleltest // sets globals.Commit and globals.CommitDate
+func TestVersionCommandReportLines(t *testing.T) {
+	const (
+		commit     = "abc1234"
+		commitDate = "2026-11-09"
+	)
+
+	previousCommit, previousCommitDate := globals.Commit, globals.CommitDate
+
+	t.Cleanup(func() {
+		globals.Commit = previousCommit
+		globals.CommitDate = previousCommitDate
+	})
+
+	globals.Commit = commit
+	globals.CommitDate = commitDate
+
+	want := "vaultik " + globals.Version + "\n" +
+		"  commit:      " + commit + "\n" +
+		"  commit date: " + commitDate + "\n" +
+		"  go:          " + runtime.Version() + "\n" +
+		"  os/arch:     " + runtime.GOOS + "/" + runtime.GOARCH + "\n" +
+		"  author:      " + globals.Author + "\n" +
+		"  homepage:    " + globals.Homepage + "\n" +
+		"  license:     " + globals.License + "\n"
+
+	out := runVersionCommand(t)
+	if !strings.HasPrefix(out, want) {
+		t.Errorf("report:\n%s\nwant it to start with:\n%s", out, want)
+	}
+}
+
 // TestVersionCommandFlagsDevelopmentBuild is the regression test for
 // the thing this command exists to prevent: a build that is not a
 // release must say so. The notice used to be gated on the version

internal/snapshot/snapshot.go

@@ -271,16 +271,18 @@ func (sm *SnapshotManager) CompleteSnapshot(
 	return sm.MarkSnapshotComplete(ctx, snapshotID)
 }
 
-// ExportSnapshotMetadata exports snapshot metadata to S3
+// ExportSnapshotMetadata exports snapshot metadata to the backup destination store
 //
 // This method executes the complete snapshot metadata export process:
 // 1. Creates a temporary directory for working files
 // 2. Copies the main database to preserve its state
 // 3. Cleans the copy to contain only current snapshot data
-// 4. Dumps the cleaned database to SQL
+// 4. Vacuums the copy to remove the deleted data
-// 5. Compresses the SQL dump with zstd
+// 5. Compresses the copy with zstd
-// 6. Encrypts the compressed data with age (always; recipients are required)
+// 6. Encrypts the compressed copy with age (always; recipients are required)
-// 7. Uploads to S3 at: snapshots/{snapshot-id}.sql.zst[.age]
+// 7. Builds the blob manifest from the copy, compressed but not encrypted
+// 8. Uploads the database to metadata/{remote-key}/db.zst.age
+// 9. Uploads the manifest to metadata/{remote-key}/manifest.json.zst
 //
 // The only caller (finalizeSnapshotMetadata) does not close the main database
 // before calling this method: the index is copied at dbPath while it is still

internal/vaultik/info.go

@@ -246,7 +246,7 @@ func (v *Vaultik) RemoteInfo(jsonOutput bool) error {
 		v.stdoutf("Type:     %s\n", storageInfo.Type)
 		v.stdoutf("Location: %s\n", storageInfo.Location)
 		v.printlnStdout()
-		v.stdoutf("Scanning snapshot metadata...\n")
+		v.UI.Beginf("Scanning snapshot metadata...")
 	}
 
 	snapshotMetadata, snapshotIDs, skippedManifestCount, err := v.collectSnapshotMetadata()
@@ -265,7 +265,7 @@ func (v *Vaultik) RemoteInfo(jsonOutput bool) error {
 			}
 		}
 
-		v.stdoutf("Downloading %d manifest(s)...\n", manifestCount)
+		v.UI.Beginf("Downloading %d manifest(s)...", manifestCount)
 	}
 
 	referencedBlobs, unreadableManifests := v.collectReferencedBlobsFromManifests(
@@ -447,7 +447,7 @@ func (v *Vaultik) scanRemoteBlobStorage(
 	result *RemoteInfoResult, referencedBlobs map[string]int64, showText bool,
 ) error {
 	if showText {
-		v.stdoutf("Scanning blobs...\n")
+		v.UI.Beginf("Scanning blobs...")
 	}
 
 	// Use prune's listing, so a file under blobs/ that prune would never

internal/vaultik/remote_info_test.go

@@ -12,6 +12,7 @@ import (
 	"github.com/stretchr/testify/require"
 	"sneak.berlin/go/vaultik/internal/log"
 	"sneak.berlin/go/vaultik/internal/snapshot"
+	"sneak.berlin/go/vaultik/internal/ui"
 )
 
 // testBlobHashB is a blob that the manifest written by addRemote does
@@ -259,3 +260,24 @@ func TestRemoteInfo_DirectoryWithoutManifestLeavesOrphansKnown(t *testing.T) {
 	assert.NotContains(t, doc, "unreadable_manifests")
 	assert.NotContains(t, doc, "skipped_manifest_count")
 }
+
+// TestRemoteInfo_StatusLineUsesUIMarker checks that the remote info
+// status lines go through internal/ui: marker-prefixed, and silenced by
+// --quiet.
+func TestRemoteInfo_StatusLineUsesUIMarker(t *testing.T) {
+	log.Initialize(log.Config{})
+	t.Parallel()
+
+	env := newListEnv(t)
+	env.addRemote(t, listRemoteID, time.Date(2026, 3, 2, 0, 0, 0, 0, time.UTC))
+
+	const statusLine = ui.Marker + " Scanning snapshot metadata...\n"
+
+	require.NoError(t, env.v.RemoteInfo(false))
+	assert.Contains(t, env.stdout.String(), statusLine)
+
+	env.stdout.Reset()
+	env.v.UI.SetQuiet(true)
+	require.NoError(t, env.v.RemoteInfo(false))
+	assert.NotContains(t, env.stdout.String(), "Scanning snapshot metadata")
+}

internal/vaultik/snapshot.go

@@ -1019,7 +1019,7 @@ func (v *Vaultik) VerifySnapshotWithOptions(
 		v.printlnStdout()
 
 		// Check each blob is present with the size the manifest records.
-		v.stdoutf("Checking blob presence and sizes...\n")
+		v.UI.Beginf("Checking blob presence and sizes...")
 	}
 
 	v.checkSnapshotDatabase(remoteKey, result)

internal/vaultik/storage_bind.go

@@ -30,7 +30,7 @@ var errStorageBindingMismatch = errors.New(
 //     nothing and return nil.
 //   - When the two differ, refuse with an error that tells the user
 //     how to recover (revert the config, or run `vaultik database
-//     purge` to discard the local index and rebuild against the new
+//     delete` to discard the local index and rebuild against the new
 //     destination on the next backup).
 //
 // Read-only inspection commands (remote info, snapshot list, etc.)

internal/vaultik/verify.go

@@ -190,7 +190,7 @@ func (v *Vaultik) loadVerificationData(
 	log.Info("Downloading manifest", "remote_key", remoteKey)
 
 	if !opts.JSON && !v.UI.Quiet() {
-		v.stdoutf("Downloading manifest...\n")
+		v.UI.Beginf("Downloading manifest...")
 	}
 
 	manifest, err := v.downloadManifestByKey(remoteKey)
@@ -205,9 +205,9 @@ func (v *Vaultik) loadVerificationData(
 		"manifest_total_size", ubytes(manifest.TotalCompressedSize))
 
 	if !opts.JSON && !v.UI.Quiet() {
-		v.stdoutf("Manifest loaded: %d blobs (%s)\n",
+		v.UI.Completef("Manifest loaded: %d blobs (%s)",
 			manifest.BlobCount, ubytes(manifest.TotalCompressedSize))
-		v.stdoutf("Downloading and decrypting database...\n")
+		v.UI.Beginf("Downloading and decrypting database...")
 	}
 
 	tdb, err := v.downloadVerifiedSnapshotDB(
@@ -235,7 +235,7 @@ func (v *Vaultik) loadVerificationData(
 		"db_total_size", ubytes(dbTotalSize))
 
 	if !opts.JSON && !v.UI.Quiet() {
-		v.stdoutf("Database loaded: %d blobs (%s)\n",
+		v.UI.Completef("Database loaded: %d blobs (%s)",
 			len(dbBlobs), ubytes(dbTotalSize))
 	}
 
@@ -295,7 +295,7 @@ func (v *Vaultik) runVerificationSteps(
 	identities []age.Identity,
 ) error {
 	if !opts.JSON && !v.UI.Quiet() {
-		v.stdoutf("Verifying manifest against database...\n")
+		v.UI.Beginf("Verifying manifest against database...")
 	}
 
 	err := v.verifyManifestAgainstDatabase(manifest, dbBlobs)
@@ -304,8 +304,8 @@ func (v *Vaultik) runVerificationSteps(
 	}
 
 	if !opts.JSON && !v.UI.Quiet() {
-		v.stdoutf("Manifest verified.\n")
+		v.UI.Completef("Manifest verified.")
-		v.stdoutf("Checking blob existence in remote storage...\n")
+		v.UI.Beginf("Checking blob existence in remote storage...")
 	}
 
 	err = v.verifyBlobExistenceFromDB(dbBlobs, result)
@@ -314,8 +314,8 @@ func (v *Vaultik) runVerificationSteps(
 	}
 
 	if !opts.JSON && !v.UI.Quiet() {
-		v.stdoutf("All blobs exist.\n")
+		v.UI.Completef("All blobs exist.")
-		v.stdoutf("Downloading and verifying blob contents (%d blobs, %s)...\n",
+		v.UI.Beginf("Downloading and verifying blob contents (%d blobs, %s)...",
 			len(dbBlobs), ubytes(totalSize))
 	}
 
@@ -790,7 +790,7 @@ func (v *Vaultik) performDeepVerificationFromDB(
 		)
 
 		if !opts.JSON && !v.UI.Quiet() {
-			v.stdoutf("  Verified %d/%d blobs (%d remaining) - %s/%s - elapsed %s, eta %s\n",
+			v.UI.Progressf("Verified %d/%d blobs (%d remaining) - %s/%s - elapsed %s, eta %s",
 				i+1, len(blobs), remaining,
 				ubytes(bytesProcessed),
 				ubytes(totalBytesExpected),

internal/vaultik/verify_quiet_test.go

@@ -100,3 +100,51 @@ func TestVerify_QuietSuppressesReport(t *testing.T) {
 	require.Empty(t, stdout.String(),
 		"a failed verify must write no report under --quiet")
 }
+
+// TestVerify_DeepStatusLineUsesUIMarker checks that the deep verify
+// status lines go through internal/ui: marker-prefixed, and silenced by
+// --quiet.
+func TestVerify_DeepStatusLineUsesUIMarker(t *testing.T) {
+	log.Initialize(log.Config{})
+	t.Parallel()
+
+	fs := afero.NewOsFs()
+	tempDir := t.TempDir()
+
+	dataDir := filepath.Join(tempDir, "source")
+	storeDir := t.TempDir()
+	dbPath := filepath.Join(tempDir, "index.sqlite")
+
+	require.NoError(t, fs.MkdirAll(dataDir, 0o755))
+	require.NoError(t, afero.WriteFile(fs,
+		filepath.Join(dataDir, "data.bin"),
+		bytesPattern("marker-", 64*1024), 0o644))
+
+	ctx := context.Background()
+
+	cfg, storer, snapshotID := runFileStorageBackup(
+		ctx, t, fs, dataDir, storeDir, dbPath, 32*1024, 128*1024)
+
+	var stdout bytes.Buffer
+
+	v := &vaultik.Vaultik{
+		Config:  cfg,
+		Storage: storer,
+		Fs:      fs,
+		Stdout:  &stdout,
+		Stderr:  io.Discard,
+		UI:      ui.NewWithColor(&stdout, false),
+	}
+	v.SetContext(ctx)
+
+	opts := &vaultik.VerifyOptions{Deep: true}
+
+	require.NoError(t, v.VerifySnapshotWithOptions(snapshotID, opts))
+	require.Contains(t, stdout.String(),
+		"\n"+ui.Marker+" Downloading manifest...\n")
+
+	stdout.Reset()
+	v.UI.SetQuiet(true)
+	require.NoError(t, v.VerifySnapshotWithOptions(snapshotID, opts))
+	require.NotContains(t, stdout.String(), "Downloading manifest")
+}

package.json

@@ -0,0 +1,5 @@
+{
+  "devDependencies": {
+    "prettier": "3.8.1"
+  }
+}

script/bootstrap

@@ -3,11 +3,20 @@
 # this repo. Idempotent: every install is guarded by a check so already
 # installed tools are skipped. Base tooling comes from nix, apt, brew,
 # or apk (detected in that order); assumes NOTHING is present (not git,
-# make, or go).
+# make, or go). Node is used directly if installed; otherwise it is
+# installed at a pinned version via nvm (installing nvm itself first,
+# from a hash-verified release archive, never curl | sh).
 set -eu
 
 ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
 
+# Pinned versions, 2026-07-06
+NODE_VERSION="22.17.0"
+NVM_VERSION="0.40.3"
+# sha256 of https://github.com/nvm-sh/nvm/archive/refs/tags/v0.40.3.tar.gz
+NVM_SHA256="5f4d6aaa04a177dc93c985e31dbc411ab6b8c6e1e21d8015dbc1372625fcd1d0"
+YARN_VERSION="1.22.22"
+
 PKGMGR=""
 SUDO=""
 
@@ -48,6 +57,69 @@ missing() {
     ! command -v "$1" >/dev/null 2>&1
 }
 
+# verify_sha256 <file> <expected-hash>
+verify_sha256() {
+    if command -v sha256sum >/dev/null 2>&1; then
+        actual="$(sha256sum "$1" | cut -d' ' -f1)"
+    else
+        actual="$(shasum -a 256 "$1" | cut -d' ' -f1)"
+    fi
+    if [ "$actual" != "$2" ]; then
+        echo "bootstrap: sha256 mismatch for $1" >&2
+        echo "  expected: $2" >&2
+        echo "  actual:   $actual" >&2
+        exit 1
+    fi
+}
+
+# nvm is a bash script; run a command in a bash with nvm loaded
+nvm_sh() {
+    bash -c ". \"\$HOME/.nvm/nvm.sh\" && $*"
+}
+
+ensure_nvm() {
+    [ -s "$HOME/.nvm/nvm.sh" ] && return 0
+    # nvm prerequisites; nvm itself requires bash
+    if missing bash; then pkg_install bash bash bash bash; fi
+    if missing curl; then pkg_install curl curl curl curl; fi
+    if missing git; then pkg_install git git git git; fi
+    tmp="$(mktemp -d)"
+    curl -fsSL -o "$tmp/nvm.tar.gz" \
+        "https://github.com/nvm-sh/nvm/archive/refs/tags/v${NVM_VERSION}.tar.gz"
+    verify_sha256 "$tmp/nvm.tar.gz" "$NVM_SHA256"
+    mkdir -p "$HOME/.nvm"
+    tar -xzf "$tmp/nvm.tar.gz" -C "$HOME/.nvm" --strip-components=1
+    rm -rf "$tmp"
+}
+
+ensure_node() {
+    if ! missing node; then return 0; fi
+    ensure_nvm
+    nvm_sh "nvm install $NODE_VERSION"
+}
+
+ensure_yarn() {
+    if ! missing yarn; then return 0; fi
+    if ! missing corepack; then
+        corepack enable
+        corepack prepare "yarn@$YARN_VERSION" --activate
+    elif [ -s "$HOME/.nvm/nvm.sh" ]; then
+        nvm_sh "nvm use $NODE_VERSION >/dev/null && corepack enable && \
+            corepack prepare yarn@$YARN_VERSION --activate"
+    else
+        npm install -g "yarn@$YARN_VERSION"
+    fi
+}
+
+install_js_deps() {
+    if missing yarn && [ -s "$HOME/.nvm/nvm.sh" ]; then
+        nvm_sh "nvm use $NODE_VERSION >/dev/null && cd \"$ROOT\" && \
+            yarn install --frozen-lockfile"
+    else
+        yarn install --frozen-lockfile
+    fi
+}
+
 # Docker is a hard requirement, not a nice-to-have: script/lint and
 # script/test build the lint and test phases of the Dockerfile, the only
 # place the linter and the tests run, and script/check and
@@ -103,6 +175,8 @@ main() {
     # Base tooling (every repo)
     if missing git; then pkg_install git git git git; fi
     if missing make; then pkg_install gnumake make make make; fi
+    # script/install-go, script/install-goreleaser and nvm download with it.
+    if missing curl; then pkg_install curl curl curl curl; fi
 
     # Go toolchain: the host's own, or else the version go.mod names,
     # hash-verified, in .tool/go. That directory is not on the caller's
@@ -131,6 +205,11 @@ main() {
 
     go mod download
 
+    # prettier, which script/fmt and script/fmt-check run on Markdown.
+    ensure_node
+    ensure_yarn
+    install_js_deps
+
     # Last, so that everything installable is installed before the one
     # thing this script cannot install decides the outcome.
     require_docker

script/fmt

@@ -4,11 +4,31 @@ set -eu
 
 ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
 
+# Must match the pin in script/bootstrap.
+NODE_VERSION="22.17.0"
+
+# script/bootstrap installs node and yarn under nvm and leaves neither
+# on the PATH of the shell that called it, so resolve the pinned
+# toolchain here the way bootstrap's own install step does. nvm is a
+# bash script, hence the subshell.
+run_yarn() {
+    if command -v yarn >/dev/null 2>&1; then
+        exec yarn "$@"
+    fi
+    if [ ! -s "$HOME/.nvm/nvm.sh" ]; then
+        echo "fmt: no yarn; run script/bootstrap first" >&2
+        exit 1
+    fi
+    exec bash -c '. "$HOME/.nvm/nvm.sh" && nvm use "$1" >/dev/null &&
+        shift && exec yarn "$@"' bash "$NODE_VERSION" "$@"
+}
+
 main() {
     cd "$ROOT"
     # Where script/bootstrap installs Go when the host has none.
     PATH="$PATH:$ROOT/.tool/go/bin"
     go fmt ./...
+    run_yarn run prettier --write '**/*.md' --tab-width 4 --prose-wrap always
 }
 
 main "$@"

script/fmt-check

@@ -3,11 +3,30 @@
 # writing. It checks every Go file outside .tool, which is more than
 # script/fmt formats: `go fmt ./...` skips `testdata` directories and
 # files and directories whose names start with `.` or `_`. Fix a file
-# only this reports with `gofmt -w`.
+# only this reports with `gofmt -w`. Markdown is checked with prettier.
 set -eu
 
 ROOT="$(cd "$(dirname "$0")/.." && pwd -P)"
 
+# Must match the pin in script/bootstrap.
+NODE_VERSION="22.17.0"
+
+# script/bootstrap installs node and yarn under nvm and leaves neither
+# on the PATH of the shell that called it, so resolve the pinned
+# toolchain here the way bootstrap's own install step does. nvm is a
+# bash script, hence the subshell.
+run_yarn() {
+    if command -v yarn >/dev/null 2>&1; then
+        exec yarn "$@"
+    fi
+    if [ ! -s "$HOME/.nvm/nvm.sh" ]; then
+        echo "fmt-check: no yarn; run script/bootstrap first" >&2
+        exit 1
+    fi
+    exec bash -c '. "$HOME/.nvm/nvm.sh" && nvm use "$1" >/dev/null &&
+        shift && exec yarn "$@"' bash "$NODE_VERSION" "$@"
+}
+
 main() {
     cd "$ROOT"
     # Where script/bootstrap installs Go when the host has none.
@@ -23,6 +42,7 @@ main() {
         echo "$unformatted" >&2
         exit 1
     fi
+    run_yarn run prettier --check '**/*.md' --tab-width 4 --prose-wrap always
 }
 
 main "$@"

yarn.lock

@@ -0,0 +1,8 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+prettier@3.8.1:
+  version "3.8.1"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-3.8.1.tgz#edf48977cf991558f4fcbd8a3ba6015ba2a3a173"
+  integrity sha512-UOnG6LftzbdaHZcKoPFtOcCKztrQ57WkHDeRD9t/PTQtmT0NHSeWWepj6pS0z/N7+08BHFDQVUrfmfMRcZwbMg==