diff --git a/.gitignore b/.gitignore
index f07adae..c7f1e6c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,6 +28,7 @@
 # Local artifacts (binaries, staging scripts, backups)
 /release-diag
 /worker
+/libraryctl
 /apply_s5_patch.py
 /tmp_*
 .style-backup-*/
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d9b9545..188729a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## 开发快照 snapshot/v0.1.108 - 2026-10-28
+
+### Added
+
+- 新增整库封存的真实业务入口 `libraryctl`（status / preflight / capture / list / verify / recover）：从本机真实测试栈只读读取来源，核对处理已结清，推出兼容契约，在维护窗口内停住声明过的写入者，导出 PostgreSQL 十表、原始索引正文与向量、对象资源与 Wiki 快照，封存为内容寻址候选产物后恢复写入者并等到 healthy。
+- 新增按 Compose 项目固定身份的冻结控制器：整个项目逐服务声明，出现未声明服务或容器被重建即拒绝，只发 SIGTERM，恢复后必须 healthy。
+- 新增「整库版本」页（只读）：对内/对外最新封存、分项数量与字节、摘要、兼容契约、归档占用；未接线时明确显示原因，不提供未实现的封存按钮。
+- 新增运维手册 `docs/library-capture.md`，含 2026-10-28 两次真实封存的快照 ID 与实测数字。
+
+### Changed
+
+- api 增加 `LIBRARY_ARCHIVE_ROOT` 与整库归档根的只读挂载（写入只发生在主机上的 libraryctl）。
+
+### Not included
+
+- 本快照不代表整库业务验收通过：内容/问答/性能验收未绑定，跨系统一致切点、Wiki 删除语义重算、生产预备份与恢复演练、双闸授权、整库同步协调与失败续作仍未完成。
+
 ## 开发快照 snapshot/v0.1.105 - 2026-10-28
 
 ### Fixed
diff --git a/cmd/api/main.go b/cmd/api/main.go
index b890fee..9b88bd6 100644
--- a/cmd/api/main.go
+++ b/cmd/api/main.go
@@ -201,6 +201,7 @@ func run(ctx context.Context, getenv func(string) string) error {
 		BackupSchedule:     postgresstore.NewStore(pool),
 		VersionHistory:     versionHistoryStore,
 		VersionHistoryRepo: versionHistoryRepo,
+		LibraryArchiveRoot: config.LibraryArchiveRoot,
 		BackupHost: backuphost.New(backuphost.Config{
 			SSHConfig: config.BackupHostSSHConfig,
 			Target:    config.BackupHostTarget,
diff --git a/cmd/libraryctl/main.go b/cmd/libraryctl/main.go
new file mode 100644
index 0000000..ebd5672
--- /dev/null
+++ b/cmd/libraryctl/main.go
@@ -0,0 +1,705 @@
+// Command libraryctl is the operator entry point for the whole-library capture
+// chain: it reads one test knowledge base (internal or external) from the real
+// WeKnora test stack, freezes its writers for the duration of the export and
+// seals a content-addressed candidate artifact.
+//
+// Boundaries this command keeps:
+//   - the source is read through a read-only PostgreSQL session; no source
+//     schema, data or program is modified;
+//   - only SIGTERM is sent to the declared writer group, and only when every
+//     service of the Compose project is declared (a new sibling container is
+//     refused, not ignored);
+//   - credentials are read from the running containers at the moment of the
+//     call and are never printed, logged or written to disk;
+//   - the sealed artifact is a *candidate*: it is not a release, and it does
+//     not replace snapshot-bound content, Q&A and performance acceptance.
+package main
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"flag"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"sort"
+	"strings"
+	"time"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"knowledge-governance/internal/libraryfreeze"
+	"knowledge-governance/internal/librarysnapshot"
+	v071 "knowledge-governance/internal/releaseadapter/v071"
+	releaseworkflow "knowledge-governance/internal/workflows/release"
+)
+
+type options struct {
+	sourceApp      string
+	sourcePG       string
+	sourceES       string
+	governancePG   string
+	project        string
+	writers        string
+	nonWriters     string
+	archiveRoot    string
+	journalRoot    string
+	dockerSocket   string
+	maxDocuments   int
+	maxObjectBytes int64
+	scope          string
+	job            string
+	dryRun         bool
+	snapshot       string
+}
+
+func main() {
+	if len(os.Args) < 2 {
+		usage()
+		os.Exit(2)
+	}
+	command := os.Args[1]
+	opts, rest, err := parseFlags(command, os.Args[2:])
+	if err != nil {
+		fmt.Fprintln(os.Stderr, "LIBRARYCTL_FLAGS:", err)
+		os.Exit(2)
+	}
+	_ = rest
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Minute)
+	defer cancel()
+	var runErr error
+	switch command {
+	case "status":
+		runErr = runStatus(ctx, opts)
+	case "preflight":
+		runErr = runPreflight(ctx, opts)
+	case "capture":
+		runErr = runCapture(ctx, opts)
+	case "list":
+		runErr = runList(opts)
+	case "verify":
+		runErr = runVerify(opts)
+	case "recover":
+		runErr = runRecover(ctx, opts)
+	default:
+		usage()
+		os.Exit(2)
+	}
+	if runErr != nil {
+		fmt.Fprintln(os.Stderr, "LIBRARYCTL_FAILED:", runErr)
+		os.Exit(1)
+	}
+}
+
+func usage() {
+	fmt.Fprint(os.Stderr, `libraryctl <status|preflight|capture|list|verify|recover> [flags]
+
+  status      probe the real source and print what is configured / blocked
+  preflight   read the source, run settlement + candidate validation (no writes, no stop)
+  capture     freeze the declared writer group, archive a candidate, restore writers
+  list        list sealed candidates and stored bytes
+  verify      re-verify one sealed candidate (digests, coverage, identity)
+  recover     restore writers from an interrupted freeze journal
+
+Flags (defaults target the local WKNFull test stack):
+  -source-app WKNFull-app         container whose env describes the source
+  -source-pg WKNFull-postgres     source PostgreSQL container (address resolution)
+  -source-es WKNFull-elasticsearch
+  -governance-pg knowledge-governance-p1-postgres-1   routing bindings read here
+  -project weknora071full         Compose project owning the writer group
+  -writers WKNFull-app            declared writer services (comma separated)
+  -non-writers WKNFull-frontend=reason,...            every other project service
+  -archive ~/.local/share/knowledge-governance/library
+  -journal ~/.local/share/knowledge-governance/freeze
+  -docker-socket /var/run/docker.sock
+  -scope internal|external        (preflight/capture)
+  -job <id>                       (capture; default: lib-<scope>-<UTC timestamp>)
+  -dry-run                        (capture: export + validate only, no archive, no stop)
+  -snapshot <id>                  (verify)
+`)
+}
+
+func parseFlags(command string, args []string) (options, []string, error) {
+	home, _ := os.UserHomeDir()
+	opts := options{
+		sourceApp:      "WKNFull-app",
+		sourcePG:       "WKNFull-postgres",
+		sourceES:       "WKNFull-elasticsearch",
+		governancePG:   "knowledge-governance-p1-postgres-1",
+		project:        "weknora071full",
+		writers:        "WKNFull-app",
+		archiveRoot:    filepath.Join(home, ".local/share/knowledge-governance/library"),
+		journalRoot:    filepath.Join(home, ".local/share/knowledge-governance/freeze"),
+		dockerSocket:   "/var/run/docker.sock",
+		maxDocuments:   100000,
+		maxObjectBytes: 134217728,
+	}
+	set := flag.NewFlagSet(command, flag.ContinueOnError)
+	set.SetOutput(os.Stderr)
+	set.StringVar(&opts.sourceApp, "source-app", opts.sourceApp, "source container describing the stack")
+	set.StringVar(&opts.sourcePG, "source-pg", opts.sourcePG, "source PostgreSQL container")
+	set.StringVar(&opts.sourceES, "source-es", opts.sourceES, "source Elasticsearch container")
+	set.StringVar(&opts.governancePG, "governance-pg", opts.governancePG, "governance PostgreSQL container")
+	set.StringVar(&opts.project, "project", opts.project, "Compose project owning the writers")
+	set.StringVar(&opts.writers, "writers", opts.writers, "declared writer services")
+	set.StringVar(&opts.nonWriters, "non-writers", "", "service=reason for every other project service")
+	set.StringVar(&opts.archiveRoot, "archive", opts.archiveRoot, "sealed artifact root")
+	set.StringVar(&opts.journalRoot, "journal", opts.journalRoot, "freeze journal root")
+	set.StringVar(&opts.dockerSocket, "docker-socket", opts.dockerSocket, "Docker engine socket")
+	set.IntVar(&opts.maxDocuments, "max-documents", opts.maxDocuments, "maximum indexed documents per scope")
+	set.Int64Var(&opts.maxObjectBytes, "max-object-bytes", opts.maxObjectBytes, "maximum bytes per stored object")
+	set.StringVar(&opts.scope, "scope", "", "internal|external")
+	set.StringVar(&opts.job, "job", "", "capture job id")
+	set.BoolVar(&opts.dryRun, "dry-run", false, "export and validate without archiving or stopping")
+	set.StringVar(&opts.snapshot, "snapshot", "", "snapshot id for verify")
+	if err := set.Parse(args); err != nil {
+		return opts, nil, err
+	}
+	return opts, set.Args(), nil
+}
+
+// ---------------------------------------------------------------- discovery
+
+func dockerOutput(ctx context.Context, args ...string) (string, error) {
+	bounded, cancel := context.WithTimeout(ctx, 60*time.Second)
+	defer cancel()
+	out, err := exec.CommandContext(bounded, "docker", args...).Output()
+	if err != nil {
+		var exit *exec.ExitError
+		if errors.As(err, &exit) && len(exit.Stderr) > 0 {
+			return "", fmt.Errorf("docker %s failed", args[0])
+		}
+		return "", fmt.Errorf("docker %s failed", args[0])
+	}
+	return strings.TrimSpace(string(out)), nil
+}
+
+func containerEnv(ctx context.Context, name string) (map[string]string, error) {
+	raw, err := dockerOutput(ctx, "inspect", "--format", "{{json .Config.Env}}", name)
+	if err != nil {
+		return nil, err
+	}
+	var entries []string
+	if err := json.Unmarshal([]byte(raw), &entries); err != nil {
+		return nil, errors.New("invalid container environment")
+	}
+	env := map[string]string{}
+	for _, entry := range entries {
+		if key, value, ok := strings.Cut(entry, "="); ok {
+			env[key] = value
+		}
+	}
+	return env, nil
+}
+
+func containerAddress(ctx context.Context, name string) (string, error) {
+	raw, err := dockerOutput(ctx, "inspect", "--format",
+		"{{range .NetworkSettings.Networks}}{{.IPAddress}} {{end}}", name)
+	if err != nil {
+		return "", err
+	}
+	for _, field := range strings.Fields(raw) {
+		if field != "" && field != "0.0.0.0" {
+			return field, nil
+		}
+	}
+	return "", fmt.Errorf("container %s has no reachable address", name)
+}
+
+func containerImageID(ctx context.Context, name string) (string, error) {
+	return dockerOutput(ctx, "inspect", "--format", "{{.Image}}", name)
+}
+
+// sourceConfig is everything needed to read the test library. Credential fields
+// are never printed: String() masks them and no log line formats the struct.
+type sourceConfig struct {
+	Scopes       map[string]string
+	DatabaseURL  string
+	Search       v071.SearchExporterConfig
+	Object       v071.S3ObjectStoreConfig
+	AppImageID   string
+	SearchIndex  string
+	ObjectDetail string
+}
+
+func discoverSource(ctx context.Context, opts options) (sourceConfig, error) {
+	var config sourceConfig
+	binding, err := readRoutingBindings(ctx, opts.governancePG)
+	if err != nil {
+		return config, err
+	}
+	config.Scopes = binding
+	app, err := containerEnv(ctx, opts.sourceApp)
+	if err != nil {
+		return config, err
+	}
+	if app["DB_DRIVER"] != "postgres" {
+		return config, errors.New("source database driver is not postgres")
+	}
+	if app["STORAGE_TYPE"] != "oss" {
+		return config, fmt.Errorf("unsupported source storage type %q", app["STORAGE_TYPE"])
+	}
+	address, err := containerAddress(ctx, opts.sourcePG)
+	if err != nil {
+		return config, err
+	}
+	dsn := strings.Join([]string{
+		"postgres://" + urlEscape(app["DB_USER"]) + ":" + urlEscape(app["DB_PASSWORD"]) +
+			"@" + address + ":" + app["DB_PORT"] + "/" + urlEscape(app["DB_NAME"]) + "?sslmode=disable",
+	}, "")
+	config.DatabaseURL = dsn
+	config.AppImageID, err = containerImageID(ctx, opts.sourceApp)
+	if err != nil {
+		return config, err
+	}
+	esAddress, err := containerAddress(ctx, opts.sourceES)
+	if err != nil {
+		return config, err
+	}
+	config.SearchIndex = app["ELASTICSEARCH_INDEX"]
+	config.Search = v071.SearchExporterConfig{BaseURL: "http://" + esAddress + ":9200", Index: app["ELASTICSEARCH_INDEX"],
+		AuthorizationToken: app["ELASTICSEARCH_PASSWORD"], PageSize: 500}
+	endpoint := app["OSS_ENDPOINT"]
+	if endpoint == "" {
+		return config, errors.New("source object endpoint is not configured")
+	}
+	if !strings.Contains(endpoint, "://") {
+		endpoint = "https://" + endpoint
+	}
+	config.Object = v071.S3ObjectStoreConfig{Provider: "oss", Endpoint: endpoint, Region: app["OSS_REGION"],
+		AccessKeyID: app["OSS_ACCESS_KEY"], SecretAccessKey: app["OSS_SECRET_KEY"], Bucket: app["OSS_BUCKET_NAME"],
+		Secure: strings.HasPrefix(endpoint, "https://"), MaxObjectBytes: opts.maxObjectBytes}
+	config.ObjectDetail = "bucket=" + app["OSS_BUCKET_NAME"] + " region=" + app["OSS_REGION"]
+	return config, nil
+}
+
+func urlEscape(value string) string {
+	replacer := strings.NewReplacer("%", "%25", ":", "%3A", "@", "%40", "/", "%2F", "?", "%3F", "#", "%23", "&", "%26", " ", "%20")
+	return replacer.Replace(value)
+}
+
+func readRoutingBindings(ctx context.Context, container string) (map[string]string, error) {
+	raw, err := dockerOutput(ctx, "exec", container, "psql", "-U", "governance", "-d", "governance", "-tAc",
+		"SELECT internal_kb_id||'|'||external_kb_id FROM routing_kb_bindings WHERE id='active'")
+	if err != nil {
+		return nil, errors.New("read routing bindings failed")
+	}
+	internal, external, ok := strings.Cut(strings.TrimSpace(raw), "|")
+	if !ok || internal == "" || external == "" {
+		return nil, errors.New("routing bindings are incomplete")
+	}
+	return map[string]string{"internal": internal, "external": external}, nil
+}
+
+func openSourceDatabase(ctx context.Context, config sourceConfig) (*pgxpool.Pool, error) {
+	parsed, err := pgxpool.ParseConfig(config.DatabaseURL)
+	if err != nil {
+		return nil, errors.New("invalid source database url")
+	}
+	// The capture chain never writes to the source. The read-only session makes
+	// that a database-enforced property rather than a convention.
+	parsed.ConnConfig.RuntimeParams["default_transaction_read_only"] = "on"
+	parsed.ConnConfig.RuntimeParams["statement_timeout"] = "120000"
+	pool, err := pgxpool.NewWithConfig(ctx, parsed)
+	if err != nil {
+		return nil, errors.New("open source database failed")
+	}
+	var readOnly string
+	if err = pool.QueryRow(ctx, "SHOW default_transaction_read_only").Scan(&readOnly); err != nil || readOnly != "on" {
+		pool.Close()
+		return nil, errors.New("source session is not read-only")
+	}
+	return pool, nil
+}
+
+func tenantAndKnowledgeBase(ctx context.Context, pool *pgxpool.Pool, knowledgeBaseID string) (uint64, error) {
+	var tenant uint64
+	err := pool.QueryRow(ctx, "SELECT tenant_id FROM knowledge_bases WHERE id=$1 AND deleted_at IS NULL", knowledgeBaseID).Scan(&tenant)
+	if err != nil || tenant == 0 {
+		return 0, errors.New("knowledge base not found in source")
+	}
+	return tenant, nil
+}
+
+func writerDeclaration(opts options) ([]string, map[string]string, error) {
+	writers := []string{}
+	for _, name := range strings.Split(opts.writers, ",") {
+		if trimmed := strings.TrimSpace(name); trimmed != "" {
+			writers = append(writers, trimmed)
+		}
+	}
+	if len(writers) == 0 {
+		return nil, nil, errors.New("no writer service declared")
+	}
+	nonWriters := map[string]string{}
+	for _, entry := range strings.Split(opts.nonWriters, ",") {
+		entry = strings.TrimSpace(entry)
+		if entry == "" {
+			continue
+		}
+		name, reason, ok := strings.Cut(entry, "=")
+		if !ok || strings.TrimSpace(reason) == "" {
+			return nil, nil, fmt.Errorf("non-writer %q needs service=reason", entry)
+		}
+		nonWriters[strings.TrimSpace(name)] = strings.TrimSpace(reason)
+	}
+	return writers, nonWriters, nil
+}
+
+func openFreeze(ctx context.Context, opts options) (*libraryfreeze.Coordinator, *libraryfreeze.ProjectController, error) {
+	writers, nonWriters, err := writerDeclaration(opts)
+	if err != nil {
+		return nil, nil, err
+	}
+	if err = os.MkdirAll(opts.journalRoot, 0700); err != nil {
+		return nil, nil, err
+	}
+	if err = os.Chmod(opts.journalRoot, 0700); err != nil {
+		return nil, nil, err
+	}
+	control, err := libraryfreeze.NewProjectController(opts.dockerSocket, opts.project, writers, nonWriters, 2*time.Minute)
+	if err != nil {
+		return nil, nil, err
+	}
+	coordinator, err := libraryfreeze.Open(opts.journalRoot, opts.project, control)
+	if err != nil {
+		control.Close()
+		return nil, nil, err
+	}
+	return coordinator, control, nil
+}
+
+func openArchive(opts options) (*librarysnapshot.Archive, error) {
+	if err := os.MkdirAll(opts.archiveRoot, 0700); err != nil {
+		return nil, err
+	}
+	if err := os.Chmod(opts.archiveRoot, 0700); err != nil {
+		return nil, err
+	}
+	return librarysnapshot.Open(opts.archiveRoot, 256*1024*1024)
+}
+
+// ---------------------------------------------------------------- commands
+
+func runStatus(ctx context.Context, opts options) error {
+	report := map[string]any{}
+	config, err := discoverSource(ctx, opts)
+	if err != nil {
+		report["source_discovery"] = err.Error()
+	} else {
+		report["source"] = map[string]any{
+			"app_image":          config.AppImageID,
+			"scopes":             config.Scopes,
+			"search_index":       config.SearchIndex,
+			"elasticsearch":      config.Search.BaseURL,
+			"object_store":       config.ObjectDetail,
+			"database":           "postgres (read-only session, credentials withheld)",
+			"credentials_logged": false,
+		}
+		pool, poolErr := openSourceDatabase(ctx, config)
+		if poolErr != nil {
+			report["database"] = poolErr.Error()
+		} else {
+			defer pool.Close()
+			settled := "settled"
+			if settleErr := v071.LibrarySourceSettled(ctx, pool); settleErr != nil {
+				settled = settleErr.Error()
+			}
+			report["settlement"] = settled
+			counts := map[string]int{}
+			for _, scope := range []string{"internal", "external"} {
+				kb := config.Scopes[scope]
+				tenant, tenantErr := tenantAndKnowledgeBase(ctx, pool, kb)
+				if tenantErr != nil {
+					counts[scope+"_error"] = -1
+					continue
+				}
+				pg, exportErr := v071.ExportLibrary(ctx, pool, v071.PostgresIdentity{TenantID: tenant, KnowledgeBaseID: kb})
+				if exportErr != nil {
+					counts[scope+"_error"] = -1
+					continue
+				}
+				for _, table := range pg.Tables {
+					if table.Name == "chunks" || table.Name == "knowledges" {
+						counts[scope+"_"+table.Name] = len(table.Rows)
+					}
+				}
+				_ = kb
+			}
+			report["postgres_rows"] = counts
+		}
+	}
+	archive, err := openArchive(opts)
+	if err != nil {
+		report["archive"] = err.Error()
+	} else {
+		defer archive.Close()
+		usage, usageErr := archive.Usage()
+		if usageErr != nil {
+			report["archive"] = usageErr.Error()
+		} else {
+			total := int64(0)
+			for _, item := range usage {
+				total += item.UniqueBytes
+			}
+			report["archive"] = map[string]any{"root": opts.archiveRoot, "snapshots": len(usage), "stored_bytes": total}
+		}
+	}
+	if coordinator, control, freezeErr := openFreeze(ctx, opts); freezeErr != nil {
+		report["freeze"] = freezeErr.Error()
+	} else {
+		defer coordinator.Close()
+		defer control.Close()
+		items, inventoryErr := control.Inventory(ctx)
+		if inventoryErr != nil {
+			report["freeze"] = inventoryErr.Error()
+		} else {
+			group := []map[string]any{}
+			for _, item := range items {
+				group = append(group, map[string]any{"id": item.ID, "running": item.Running, "healthy": item.Healthy})
+			}
+			report["freeze"] = map[string]any{"project": opts.project, "writers": group, "journal": opts.journalRoot}
+		}
+	}
+	printJSON(report)
+	return nil
+}
+
+func runPreflight(ctx context.Context, opts options) error {
+	if opts.scope != "internal" && opts.scope != "external" {
+		return errors.New("-scope must be internal or external")
+	}
+	config, err := discoverSource(ctx, opts)
+	if err != nil {
+		return err
+	}
+	pool, err := openSourceDatabase(ctx, config)
+	if err != nil {
+		return err
+	}
+	defer pool.Close()
+	kb := config.Scopes[opts.scope]
+	tenant, err := tenantAndKnowledgeBase(ctx, pool, kb)
+	if err != nil {
+		return err
+	}
+	if err = v071.LibrarySourceSettled(ctx, pool); err != nil {
+		return err
+	}
+	search, err := v071.NewSearchExporter(config.Search)
+	if err != nil {
+		return err
+	}
+	contract, err := compatibilityContract(ctx, pool, search, config.SearchIndex, tenant, kb)
+	if err != nil {
+		return err
+	}
+	pg, err := v071.ExportLibrary(ctx, pool, v071.PostgresIdentity{TenantID: tenant, KnowledgeBaseID: kb})
+	if err != nil {
+		return err
+	}
+	es, err := search.ExportLibrary(ctx, v071.SearchIdentity{TenantID: tenant, KnowledgeBaseID: kb}, opts.maxDocuments)
+	if err != nil {
+		return err
+	}
+	validation := "candidate-valid"
+	if err = v071.ValidateLibraryCandidateForPreflight(v071.PostgresIdentity{TenantID: tenant, KnowledgeBaseID: kb}, pg, es); err != nil {
+		validation = err.Error()
+	}
+	tables := map[string]int{}
+	for _, table := range pg.Tables {
+		tables[table.Name] = len(table.Rows)
+	}
+	printJSON(map[string]any{"scope": opts.scope, "knowledge_base_id": kb, "tenant_id": tenant,
+		"compatibility": contract, "postgres_rows": tables, "index_documents": len(es.Documents),
+		"mapping_sha256": es.MappingSHA256, "validation": validation, "writes": 0, "writers_stopped": 0})
+	if validation != "candidate-valid" {
+		return errors.New("candidate validation failed: " + validation)
+	}
+	return nil
+}
+
+func compatibilityContract(ctx context.Context, pool *pgxpool.Pool, search *v071.SearchExporter, index string, tenant uint64, kb string) (v071.LibrarySnapshotCompatibility, error) {
+	inspector, err := v071.NewTargetContractInspector(v071.TargetContractInspectorConfig{DB: pool, Mapping: search,
+		KnowledgeBaseID: kb, TenantID: tenant, IndexName: index, ReadTestedBase: true})
+	if err != nil {
+		return v071.LibrarySnapshotCompatibility{}, err
+	}
+	contract, err := inspector.Contract(ctx, releaseworkflow.PlanItem{TestKnowledgeBaseID: kb})
+	if err != nil {
+		return v071.LibrarySnapshotCompatibility{}, err
+	}
+	return v071.LibrarySnapshotCompatibility{WeKnoraVersion: contract.WeKnoraVersion, SchemaVersion: contract.MigrationVersion,
+		RetrieverEngine: contract.RetrieverEngine, EmbeddingModel: contract.EmbeddingModel,
+		EmbeddingDimension: contract.EmbeddingDimension, IndexMappingSHA256: contract.ElasticsearchMappingSHA256}, nil
+}
+
+func runCapture(ctx context.Context, opts options) error {
+	if opts.scope != "internal" && opts.scope != "external" {
+		return errors.New("-scope must be internal or external")
+	}
+	if opts.dryRun {
+		return runPreflight(ctx, opts)
+	}
+	job := opts.job
+	if job == "" {
+		job = "lib-" + opts.scope + "-" + time.Now().UTC().Format("20060102T150405")
+	}
+	config, err := discoverSource(ctx, opts)
+	if err != nil {
+		return err
+	}
+	pool, err := openSourceDatabase(ctx, config)
+	if err != nil {
+		return err
+	}
+	defer pool.Close()
+	kb := config.Scopes[opts.scope]
+	tenant, err := tenantAndKnowledgeBase(ctx, pool, kb)
+	if err != nil {
+		return err
+	}
+	search, err := v071.NewSearchExporter(config.Search)
+	if err != nil {
+		return err
+	}
+	objects, err := v071.NewS3ObjectStore(config.Object)
+	if err != nil {
+		return err
+	}
+	contract, err := compatibilityContract(ctx, pool, search, config.SearchIndex, tenant, kb)
+	if err != nil {
+		return err
+	}
+	archive, err := openArchive(opts)
+	if err != nil {
+		return err
+	}
+	defer archive.Close()
+	coordinator, control, err := openFreeze(ctx, opts)
+	if err != nil {
+		return err
+	}
+	defer coordinator.Close()
+	defer control.Close()
+	if err = coordinator.Recover(ctx); err != nil {
+		return fmt.Errorf("pending freeze requires recovery: %w", err)
+	}
+	// sourceReady proves the *group* is complete and consistent. Recorded work
+	// settlement is enforced separately by CaptureLibrary; neither check can see
+	// unrecorded or remote work.
+	sourceReady := func(ctx context.Context) error {
+		items, err := control.Inventory(ctx)
+		if err != nil {
+			return err
+		}
+		if len(items) == 0 {
+			return errors.New("writer group is empty")
+		}
+		return nil
+	}
+	result, err := v071.CaptureLibrary(ctx, coordinator, archive, pool, search, objects, sourceReady,
+		v071.LibraryCaptureRequest{JobID: job, Scope: opts.scope,
+			Identity:      v071.PostgresIdentity{TenantID: tenant, KnowledgeBaseID: kb},
+			Compatibility: contract, CreatedAt: time.Now().UTC(), MaxDocuments: opts.maxDocuments})
+	if err != nil {
+		printJSON(map[string]any{"job": job, "state": result.State, "snapshot_id": result.SnapshotID, "error": err.Error()})
+		return err
+	}
+	manifest, err := archive.Load(result.SnapshotID)
+	if err != nil {
+		return err
+	}
+	parts := make([]map[string]any, 0, len(manifest.Parts))
+	var total int64
+	for _, part := range manifest.Parts {
+		parts = append(parts, map[string]any{"kind": part.Kind, "name": part.Name, "count": part.Count, "bytes": part.Bytes, "sha256": part.SHA256})
+		total += part.Bytes
+	}
+	sort.Slice(parts, func(i, j int) bool {
+		return fmt.Sprint(parts[i]["kind"])+fmt.Sprint(parts[i]["name"]) < fmt.Sprint(parts[j]["kind"])+fmt.Sprint(parts[j]["name"])
+	})
+	printJSON(map[string]any{"job": job, "state": result.State, "snapshot_id": result.SnapshotID,
+		"scope": manifest.Scope, "knowledge_base_id": manifest.KnowledgeBaseID, "tenant_id": manifest.TenantID,
+		"compatibility": manifest.Compatibility, "parts": parts, "logical_bytes": total,
+		"validation_policy": manifest.ValidationPolicy, "writers_restored": true})
+	return nil
+}
+
+func runList(opts options) error {
+	archive, err := openArchive(opts)
+	if err != nil {
+		return err
+	}
+	defer archive.Close()
+	usage, err := archive.Usage()
+	if err != nil {
+		return err
+	}
+	items := make([]map[string]any, 0, len(usage))
+	for _, item := range usage {
+		manifest, err := archive.Load(item.VersionID)
+		if err != nil {
+			return err
+		}
+		items = append(items, map[string]any{"snapshot_id": item.VersionID, "scope": manifest.Scope,
+			"knowledge_base_id": manifest.KnowledgeBaseID, "created_at": manifest.CreatedAt,
+			"logical_bytes": item.LogicalBytes, "unique_bytes": item.UniqueBytes, "shared_bytes": item.SharedBytes,
+			"parts": len(manifest.Parts), "policy": manifest.ValidationPolicy})
+	}
+	printJSON(map[string]any{"archive": opts.archiveRoot, "snapshots": items})
+	return nil
+}
+
+func runVerify(opts options) error {
+	if opts.snapshot == "" {
+		return errors.New("-snapshot is required")
+	}
+	archive, err := openArchive(opts)
+	if err != nil {
+		return err
+	}
+	defer archive.Close()
+	manifest, err := archive.Load(opts.snapshot)
+	if err != nil {
+		return err
+	}
+	parts := make([]map[string]any, 0, len(manifest.Parts))
+	for _, part := range manifest.Parts {
+		parts = append(parts, map[string]any{"kind": part.Kind, "name": part.Name, "count": part.Count, "bytes": part.Bytes, "sha256": part.SHA256})
+	}
+	printJSON(map[string]any{"snapshot_id": opts.snapshot, "verified": true, "format": manifest.Format,
+		"policy": manifest.ValidationPolicy, "scope": manifest.Scope, "knowledge_base_id": manifest.KnowledgeBaseID,
+		"tenant_id": manifest.TenantID, "created_at": manifest.CreatedAt, "compatibility": manifest.Compatibility, "parts": parts})
+	return nil
+}
+
+func runRecover(ctx context.Context, opts options) error {
+	coordinator, control, err := openFreeze(ctx, opts)
+	if err != nil {
+		return err
+	}
+	defer coordinator.Close()
+	defer control.Close()
+	if err = coordinator.Recover(ctx); err != nil {
+		return err
+	}
+	items, err := control.Inventory(ctx)
+	if err != nil {
+		return err
+	}
+	group := []map[string]any{}
+	for _, item := range items {
+		group = append(group, map[string]any{"id": item.ID, "running": item.Running, "healthy": item.Healthy})
+	}
+	printJSON(map[string]any{"recovered": true, "writers": group})
+	return nil
+}
+
+func printJSON(value any) {
+	encoder := json.NewEncoder(os.Stdout)
+	encoder.SetIndent("", "  ")
+	_ = encoder.Encode(value)
+}
diff --git a/compose.yaml b/compose.yaml
index 11595ea..d658536 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -49,6 +49,9 @@ services:
         VERSION_HISTORY_LINK_ORIGIN: "${VERSION_HISTORY_LINK_ORIGIN:-}"
         VERSION_HISTORY_HTTP_TIMEOUT: "${VERSION_HISTORY_HTTP_TIMEOUT:-15s}"
         VERSION_HISTORY_MAX_PAGES: "${VERSION_HISTORY_MAX_PAGES:-200}"
+        # 「整库版本」页：只读已封存的整库候选产物。归档根由 `libraryctl capture`
+        # 在主机上写入（私有 0700），这里只挂只读；留空 = 未接线（页面降级展示原因）。
+        LIBRARY_ARCHIVE_ROOT: "${LIBRARY_ARCHIVE_ROOT:-/var/lib/knowledge-governance/library}"
       # Mount this independent master-key file read-only using the deployment overlay.
       QA_AI_MASTER_KEY_FILE: "${QA_AI_MASTER_KEY_FILE:-}"
       QA_AI_DNS_OVER_TLS: "${QA_AI_DNS_OVER_TLS:-}"
@@ -73,6 +76,8 @@ services:
       - pgpass
       - test_weknora_api_key
     volumes:
+      # 整库封存产物：只读挂载，api 只读不写（写入只发生在主机上的 libraryctl）。
+      - /home/zheromiku/.local/share/knowledge-governance/library:/var/lib/knowledge-governance/library:ro
       # 与 worker 共用同一份 dws 状态：refresh token 是轮换制，绝不能在两处各留一份。
       - /home/zheromiku/.dws:/data/dws
       # dws 的文件型 keychain 必须有 $HOME/.local/share/dws-cli，故挂到 DWS_HOME 下。
diff --git a/docs/library-capture.md b/docs/library-capture.md
new file mode 100644
index 0000000..8a6d6f7
--- /dev/null
+++ b/docs/library-capture.md
@@ -0,0 +1,69 @@
+# 整库封存（libraryctl）运维手册
+
+本文只讲**测试库**的整库封存链：怎么跑、它证明了什么、它**没有**证明什么。生产发布与恢复、清理不在本文范围。
+
+## 它做什么
+
+`libraryctl capture -scope internal|external`：
+
+1. 从**本机真实测试栈**（默认 Compose 项目 `weknora071full`）读来源配置：容器环境里的数据库/检索/对象存储参数，运行时读取，不落盘、不回显。
+2. 用**只读会话**（`default_transaction_read_only=on`）连来源 PostgreSQL；连接串只在进程内存里。
+3. 核对来源已结清：所有文档 `parse_status=completed`、无待处理操作、无死信（任一不满足就拒绝，不看其他 KB 的局部状态）。
+4. 从持久数据推出兼容契约：迁移版本、dirty、租户、Embedding 模型与维度、检索引擎、索引名、索引映射摘要（`text-embedding-v4` / 1024 维 / schema 74）。
+5. 在**维护窗口**内停住声明过的写入者（只对声明为 writer 的服务发 SIGTERM，等它真的停下），导出 PostgreSQL 十表 + Elasticsearch 正文与向量 + 对象资源，做双向覆盖与摘要核验，封存为内容寻址产物。
+6. 无论成败都恢复写入者并等到 healthy；崩溃留下的日志用 `libraryctl recover` 收尾。
+7. 打印快照 ID、分项（kind/name/数量/字节/SHA256）与兼容契约。
+
+## 写入者声明（安全边界）
+
+`scripts/library-capture.sh` 里逐项声明了项目内**每一个**服务：一个 writer（`app`），其余每个都写了"为什么它不会写知识"。`ProjectController` 的规则：
+
+- 整个 Compose 项目被枚举（含停止的），只按声明停机；
+- 项目里出现未声明的服务 → **拒绝执行**，不会"只停已知的那几个"；
+- 首次清点后固定容器 ID，容器被重建（同名新实例）→ 拒绝，避免停到一个没被声明的实例；
+- 只发 SIGTERM，没有会在恢复后才触发的 SIGKILL 定时器；
+- 启动后必须等到 healthy 才算恢复。
+
+## 命令
+
+```bash
+# 接线与来源探针（只读，不停服务）
+./scripts/library-capture.sh status
+# 预检：读来源 + 结清检查 + 候选校验，不写盘、不停服务
+./scripts/library-capture.sh preflight -scope internal
+# 真实封存（停 app → 导出 → 恢复 app）
+./scripts/library-capture.sh capture -scope internal
+./scripts/library-capture.sh capture -scope external
+# 已封存产物
+./scripts/library-capture.sh list
+./scripts/library-capture.sh verify -snapshot <id>
+# 崩溃后的收尾（恢复写入者）
+./scripts/library-capture.sh recover
+```
+
+产物默认写到 `~/.local/share/knowledge-governance/library`（0700），日志写到 `~/.local/share/knowledge-governance/freeze`（0700）。api 容器只以只读方式挂载前者，「整库版本」页据此展示；页面**没有**封存按钮，因为封存要维护窗口与来源凭据，只能在目标主机执行。
+
+## 2026-10-28 实测（本机测试栈）
+
+| 项 | 对内 | 对外 |
+| --- | --- | --- |
+| 快照 | `f992d64ea45bf737a0721a465b5aef2b150ef7757157eb84f3aaf8b6972d98f9` | `01343b0b310b3977c2fdda05f5b8a6272148c4f7bfa124a6c5944123cf0c51c3` |
+| 文档 / 分块 / 索引 | 4 / 38 / 122 | 0 / 0 / 0 |
+| 资源 / Wiki 页 | 21 / 31 | 0 / 1 |
+| 分项数 / 逻辑字节 | 32 / 55,309,044 | 13 / 1,121 |
+| 策略 | artifact-acceptance-v1 | artifact-acceptance-v1 |
+
+两次封存都记录了 `stop_verified=true`、`restored=true`，`WKNFull-app` 恢复后 healthy；来源未做任何写操作。
+
+## 它证明了什么 / 没有证明什么
+
+已证明：这一份整库内容在**写入者停住**之后被完整导出，PostgreSQL 与 Elasticsearch 双向覆盖、生成问题、资源与摘要逐项核验通过，产物可寻址、可复读、可校验。
+
+没有证明（不要把候选当版本）：
+
+- **内容/问答/性能验收**没有做，也没有把结果绑定到快照；
+- **跨 PG / ES / 资源的一致切点**只是在维护窗口里取得，没有独立的切点证据；
+- **Wiki 删除贡献的语义重算**没有做；Wiki 队列空不等于语义正确；
+- 对外库当前是空的（0 文档 1 Wiki 页），这份快照只说明"它当时确实是空的"；
+- 生产备份/恢复、双闸授权、整库同步与失败续作都没有接线，本文不涉及；
+- 上游父子分块漏正文索引的风险仍在：本次候选通过是因为库里现有数据已补齐，**以后再重解析**仍可能漏项，届时封存会因覆盖核验失败而阻断（这是设计如此）。
\ No newline at end of file
diff --git a/internal/appconfig/config.go b/internal/appconfig/config.go
index 8a72748..e40a20c 100644
--- a/internal/appconfig/config.go
+++ b/internal/appconfig/config.go
@@ -69,6 +69,9 @@ type Config struct {
 	VersionHistoryAllowedOrigins []string
 	// VersionHistoryLinkOrigin 是**页面链接**用的 origin（给内网外的浏览器点开），
 	// 留空即与抓取 origin 相同。只用于拼展示链接，不参与任何请求。
+	// LibraryArchiveRoot 是整库封存产物的只读归档根（主机私有 0700 目录的只读挂载）。
+	// 留空即"未接线"：页面只显示原因，不显示空表冒充没有快照。
+	LibraryArchiveRoot        string
 	VersionHistoryLinkOrigin  string
 	VersionHistoryHTTPTimeout time.Duration
 	VersionHistoryMaxPages    int
@@ -116,6 +119,7 @@ func Load(getenv func(string) string) (Config, error) {
 		VersionHistoryGiteaBaseURL:   strings.TrimSpace(getenv("VERSION_HISTORY_GITEA_BASE_URL")),
 		VersionHistoryRepo:           valueOrDefault(strings.TrimSpace(getenv("VERSION_HISTORY_REPO")), "Weknora/knowledge-governance"),
 		VersionHistoryAllowedOrigins: splitOrigins(getenv("VERSION_HISTORY_ALLOWED_ORIGINS")),
+		LibraryArchiveRoot:           strings.TrimSpace(getenv("LIBRARY_ARCHIVE_ROOT")),
 		VersionHistoryLinkOrigin:     strings.TrimSpace(getenv("VERSION_HISTORY_LINK_ORIGIN")),
 		VersionHistoryHTTPTimeout:    15 * time.Second,
 		VersionHistoryMaxPages:       valueOrDefaultInt(getenv("VERSION_HISTORY_MAX_PAGES"), 200),
@@ -226,6 +230,9 @@ func Load(getenv func(string) string) (Config, error) {
 			}
 		}
 	}
+	if config.LibraryArchiveRoot != "" && !filepath.IsAbs(config.LibraryArchiveRoot) {
+		return Config{}, errors.New("LIBRARY_ARCHIVE_ROOT 必须是绝对路径（归档根按只读目录挂载）")
+	}
 	if config.TestWeKnoraHTTPTimeout, err = durationOrDefault(getenv("TEST_WEKNORA_HTTP_TIMEOUT"), config.TestWeKnoraHTTPTimeout); err != nil {
 		return Config{}, fmt.Errorf("TEST_WEKNORA_HTTP_TIMEOUT: %w", err)
 	}
diff --git a/internal/httpapi/library_snapshots.go b/internal/httpapi/library_snapshots.go
new file mode 100644
index 0000000..50d1c58
--- /dev/null
+++ b/internal/httpapi/library_snapshots.go
@@ -0,0 +1,190 @@
+package httpapi
+
+import (
+	"errors"
+	"net/http"
+	"sort"
+	"strings"
+	"time"
+
+	"knowledge-governance/internal/librarysnapshot"
+)
+
+// 「整库版本」只读视图：把已经封存的候选产物（artifact-acceptance-v1）如实列出来。
+//
+// 边界（刻意不做的事）：
+//   - 不触发封存、不停/起写入者：封存需要维护窗口与来源凭据，只能由运维命令
+//     scripts/library-capture.sh 在目标主机执行；
+//   - 不把候选当版本：候选只证明"这一份内容被完整、可核验地封存了"，内容/问答/
+//     性能验收与生产发布是另外的、需要独立授权的事；
+//   - 归档根没接线时返回可用性=false 与原因，不返回空表冒充"没有快照"。
+type librarySnapshotPart struct {
+	Kind   string `json:"kind"`
+	Name   string `json:"name"`
+	SHA256 string `json:"sha256"`
+	Count  int64  `json:"count"`
+	Bytes  int64  `json:"bytes"`
+}
+
+type librarySnapshotView struct {
+	SnapshotID       string                        `json:"snapshot_id"`
+	Scope            string                        `json:"scope"`
+	KnowledgeBaseID  string                        `json:"knowledge_base_id"`
+	TenantID         uint64                        `json:"tenant_id"`
+	CreatedAt        time.Time                     `json:"created_at"`
+	ValidationPolicy string                        `json:"validation_policy"`
+	Format           string                        `json:"format"`
+	Compatibility    librarysnapshot.Compatibility `json:"compatibility"`
+	Parts            []librarySnapshotPart         `json:"parts"`
+	LogicalBytes     int64                         `json:"logical_bytes"`
+	UniqueBytes      int64                         `json:"unique_bytes"`
+	SharedBytes      int64                         `json:"shared_bytes"`
+	Totals           map[string]int64              `json:"totals"`
+}
+
+type librarySnapshotList struct {
+	Available   bool                  `json:"available"`
+	Reason      string                `json:"reason,omitempty"`
+	ArchiveRoot string                `json:"archive_root,omitempty"`
+	Snapshots   []librarySnapshotView `json:"snapshots"`
+	StoredBytes int64                 `json:"stored_bytes"`
+	// 页面必须能说清"封存由谁执行"，不能让人以为页面上有个没实现的按钮。
+	CaptureNote string `json:"capture_note"`
+}
+
+const libraryCaptureNote = "封存由运维命令 scripts/library-capture.sh capture -scope internal|external 在目标主机执行（停写入者→导出→恢复）。页面只读展示已封存的候选；候选不等于验收通过或可发布。"
+
+func librarySnapshotsList(w http.ResponseWriter, r *http.Request, config Config) {
+	view, err := readLibrarySnapshots(config.LibraryArchiveRoot)
+	if err != nil {
+		writeJSON(w, http.StatusServiceUnavailable, librarySnapshotList{Available: false,
+			Reason: "归档不可读：" + err.Error(), Snapshots: []librarySnapshotView{}, CaptureNote: libraryCaptureNote})
+		return
+	}
+	writeJSON(w, http.StatusOK, view)
+}
+
+func librarySnapshotDetail(w http.ResponseWriter, r *http.Request, config Config) {
+	id := strings.TrimSpace(r.PathValue("id"))
+	if id == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "snapshot id required"})
+		return
+	}
+	if config.LibraryArchiveRoot == "" {
+		writeJSON(w, http.StatusOK, map[string]any{"available": false,
+			"reason": "未接线：LIBRARY_ARCHIVE_ROOT 未配置，本平台没有整库归档可读"})
+		return
+	}
+	archive, err := librarysnapshot.Open(config.LibraryArchiveRoot, 256*1024*1024)
+	if err != nil {
+		writeJSON(w, http.StatusServiceUnavailable, map[string]any{"available": false, "reason": "归档不可读"})
+		return
+	}
+	defer archive.Close()
+	manifest, err := archive.Load(id)
+	if err != nil {
+		writeJSON(w, http.StatusNotFound, map[string]any{"available": false, "reason": "快照不存在或校验失败"})
+		return
+	}
+	usage, err := archive.Usage()
+	if err != nil {
+		writeJSON(w, http.StatusServiceUnavailable, map[string]any{"available": false, "reason": "归档用量不可读"})
+		return
+	}
+	view, ok := librarySnapshotViewOf(id, manifest, usage)
+	if !ok {
+		view = librarySnapshotViewOfNoUsage(id, manifest)
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"available": true, "snapshot": view, "capture_note": libraryCaptureNote})
+}
+
+func readLibrarySnapshots(root string) (librarySnapshotList, error) {
+	view := librarySnapshotList{Snapshots: []librarySnapshotView{}, CaptureNote: libraryCaptureNote}
+	if root == "" {
+		view.Reason = "未接线：LIBRARY_ARCHIVE_ROOT 未配置，本平台没有整库归档可读"
+		return view, nil
+	}
+	view.ArchiveRoot = root
+	archive, err := librarysnapshot.Open(root, 256*1024*1024)
+	if err != nil {
+		return view, errors.New("归档根不可用")
+	}
+	defer archive.Close()
+	usage, err := archive.Usage()
+	if err != nil {
+		return view, errors.New("归档用量不可读")
+	}
+	byID := map[string]librarysnapshot.Usage{}
+	for _, item := range usage {
+		byID[item.VersionID] = item
+		view.StoredBytes += item.UniqueBytes
+	}
+	for id, item := range byID {
+		manifest, loadErr := archive.Load(id)
+		if loadErr != nil {
+			return view, errors.New("归档快照校验失败")
+		}
+		snapshot, ok := librarySnapshotViewOf(id, manifest, []librarysnapshot.Usage{item})
+		if !ok {
+			snapshot = librarySnapshotViewOfNoUsage(id, manifest)
+		}
+		view.Snapshots = append(view.Snapshots, snapshot)
+	}
+	sort.Slice(view.Snapshots, func(i, j int) bool {
+		if view.Snapshots[i].CreatedAt.Equal(view.Snapshots[j].CreatedAt) {
+			return view.Snapshots[i].SnapshotID > view.Snapshots[j].SnapshotID
+		}
+		return view.Snapshots[i].CreatedAt.After(view.Snapshots[j].CreatedAt)
+	})
+	view.Available = true
+	return view, nil
+}
+
+func librarySnapshotViewOf(id string, manifest librarysnapshot.Manifest, usage []librarysnapshot.Usage) (librarySnapshotView, bool) {
+	snapshot := librarySnapshotViewOfNoUsage(id, manifest)
+	for _, item := range usage {
+		if item.VersionID == id {
+			snapshot.LogicalBytes = item.LogicalBytes
+			snapshot.UniqueBytes = item.UniqueBytes
+			snapshot.SharedBytes = item.SharedBytes
+			return snapshot, true
+		}
+	}
+	return snapshot, false
+}
+
+func librarySnapshotViewOfNoUsage(id string, manifest librarysnapshot.Manifest) librarySnapshotView {
+	snapshot := librarySnapshotView{SnapshotID: id, Scope: manifest.Scope, KnowledgeBaseID: manifest.KnowledgeBaseID,
+		TenantID: manifest.TenantID, CreatedAt: manifest.CreatedAt, ValidationPolicy: manifest.ValidationPolicy,
+		Format: manifest.Format, Compatibility: manifest.Compatibility, Parts: make([]librarySnapshotPart, 0, len(manifest.Parts)),
+		Totals: map[string]int64{}}
+	for _, part := range manifest.Parts {
+		snapshot.Parts = append(snapshot.Parts, librarySnapshotPart{Kind: part.Kind, Name: part.Name,
+			SHA256: part.SHA256, Count: part.Count, Bytes: part.Bytes})
+		snapshot.LogicalBytes += part.Bytes
+		// 汇总按"数量字段"给出人看得懂的四个数字：文档/分块/索引/资源/Wiki 页。
+		switch part.Name {
+		case "knowledges":
+			snapshot.Totals["documents"] = part.Count
+		case "chunks":
+			if part.Kind == "database" {
+				snapshot.Totals["chunks"] = part.Count
+			} else {
+				snapshot.Totals["index_documents"] = part.Count
+			}
+		case "resources":
+			snapshot.Totals["resources"] = part.Count
+		case "wiki_pages":
+			snapshot.Totals["wiki_pages"] = part.Count
+		case "wiki_folders":
+			snapshot.Totals["wiki_folders"] = part.Count
+		}
+	}
+	sort.Slice(snapshot.Parts, func(i, j int) bool {
+		if snapshot.Parts[i].Kind == snapshot.Parts[j].Kind {
+			return snapshot.Parts[i].Name < snapshot.Parts[j].Name
+		}
+		return snapshot.Parts[i].Kind < snapshot.Parts[j].Kind
+	})
+	return snapshot
+}
diff --git a/internal/httpapi/server.go b/internal/httpapi/server.go
index 541f479..1d3211b 100644
--- a/internal/httpapi/server.go
+++ b/internal/httpapi/server.go
@@ -127,8 +127,10 @@ type Config struct {
 	// 所在主机上读回/下发计划并触发一次整库备份（未接线时页面降级展示）。
 	// VersionHistory 是「版本记录」页的只读查询面；VersionHistoryRepo 是固定的仓库标识
 	// （owner/name）。两者都给才接线，否则页面降级为"未接线"（不报 500）。
-	VersionHistory                   VersionHistoryStore
-	VersionHistoryRepo               string
+	VersionHistory     VersionHistoryStore
+	VersionHistoryRepo string
+	// LibraryArchiveRoot 是整库封存产物的只读归档根；留空即未接线（页面降级）。
+	LibraryArchiveRoot               string
 	BackupSchedule                   BackupScheduleStore
 	BackupHost                       BackupHost
 	BackupRuns                       *BackupRunTracker
@@ -387,6 +389,13 @@ func NewHandler(config Config) (http.Handler, error) {
 	mux.HandleFunc("GET /api/v1/build-info", func(w http.ResponseWriter, r *http.Request) {
 		buildInfo(w, r)
 	})
+	// 整库版本（只读）：列出已封存的整库候选产物与其分项数量/字节/摘要。
+	mux.HandleFunc("GET /api/v1/library/snapshots", func(w http.ResponseWriter, r *http.Request) {
+		librarySnapshotsList(w, r, config)
+	})
+	mux.HandleFunc("GET /api/v1/library/snapshots/{id}", func(w http.ResponseWriter, r *http.Request) {
+		librarySnapshotDetail(w, r, config)
+	})
 	// 全部 main 提交时间线（读本库缓存，不直接打 Gitea）
 	mux.HandleFunc("GET /api/v1/version-history", func(w http.ResponseWriter, r *http.Request) {
 		versionHistoryList(w, r, config)
diff --git a/internal/libraryfreeze/project.go b/internal/libraryfreeze/project.go
new file mode 100644
index 0000000..678576f
--- /dev/null
+++ b/internal/libraryfreeze/project.go
@@ -0,0 +1,267 @@
+package libraryfreeze
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"io"
+	"net"
+	"net/http"
+	"net/url"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"time"
+)
+
+// A deployed test stack owns its containers: it cannot be relabelled without
+// recreating it, which would be a change to that stack rather than to this
+// platform. ProjectController therefore pins the writer group by the identity
+// the stack already carries: the Compose project and the exact service names.
+//
+// Safety properties (the reason this is not a name filter):
+//   - the whole Compose project is enumerated, not just the running subset;
+//   - every service in the project must be declared, either as a writer or as
+//     explicitly non-writing with a reason, so a new sibling container cannot
+//     be silently omitted from the maintenance window;
+//   - container IDs are pinned on first inventory, so a recreated container is
+//     refused instead of being stopped by a stale identity;
+//   - only SIGTERM is sent and start waits for health, exactly like the
+//     label-scoped controller.
+type ProjectController struct {
+	project   string
+	writers   map[string]bool
+	nonWriter map[string]string
+	timeout   time.Duration
+	client    *http.Client
+	transport *http.Transport
+	pinned    map[string]string
+}
+
+const composeProjectLabel = "com.docker.compose.project"
+const composeServiceLabel = "com.docker.compose.service"
+
+// NewProjectController validates the declaration. nonWriter must explain every
+// service in the project which is not a writer; an empty reason is rejected.
+func NewProjectController(socket, project string, writers []string, nonWriter map[string]string, timeout time.Duration) (*ProjectController, error) {
+	if !filepath.IsAbs(socket) || !validID(project) || timeout <= 0 || timeout > 5*time.Minute || len(writers) == 0 || len(writers) > 32 {
+		return nil, errors.New("invalid project Docker controller configuration")
+	}
+	set := map[string]bool{}
+	for _, name := range writers {
+		if !validID(name) || set[name] {
+			return nil, errors.New("invalid project writer declaration")
+		}
+		if _, both := nonWriter[name]; both {
+			return nil, errors.New("project service declared as both writer and non-writer")
+		}
+		set[name] = true
+	}
+	for name, reason := range nonWriter {
+		if !validID(name) || strings.TrimSpace(reason) == "" {
+			return nil, errors.New("invalid non-writer declaration")
+		}
+	}
+	info, err := os.Stat(socket)
+	if err != nil || info.Mode()&os.ModeSocket == 0 {
+		return nil, errors.New("local Docker socket unavailable")
+	}
+	transport := &http.Transport{DialContext: func(ctx context.Context, _, _ string) (net.Conn, error) {
+		return (&net.Dialer{}).DialContext(ctx, "unix", socket)
+	}}
+	client := &http.Client{Transport: transport, Timeout: timeout, CheckRedirect: func(*http.Request, []*http.Request) error {
+		return errors.New("Docker redirects prohibited")
+	}}
+	return &ProjectController{project: project, writers: set, nonWriter: nonWriter, timeout: timeout,
+		client: client, transport: transport, pinned: map[string]string{}}, nil
+}
+
+func (p *ProjectController) Close() { p.transport.CloseIdleConnections() }
+
+func (p *ProjectController) request(ctx context.Context, method, path string, out any) error {
+	req, err := http.NewRequestWithContext(ctx, method, "http://docker"+path, nil)
+	if err != nil {
+		return errors.New("invalid Docker request")
+	}
+	resp, err := p.client.Do(req)
+	if err != nil {
+		return errors.New("project Docker request failed")
+	}
+	defer resp.Body.Close()
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return errors.New("project Docker request rejected")
+	}
+	if out != nil {
+		data, readErr := io.ReadAll(io.LimitReader(resp.Body, 1024*1024+1))
+		if readErr != nil || len(data) > 1024*1024 || json.Unmarshal(data, out) != nil {
+			return errors.New("invalid Docker response")
+		}
+	}
+	return nil
+}
+
+type projectInspection struct {
+	ID     string `json:"Id"`
+	Config struct {
+		Labels map[string]string `json:"Labels"`
+		Image  string            `json:"Image"`
+	} `json:"Config"`
+	State struct {
+		Running    bool
+		Paused     bool
+		Restarting bool
+		Dead       bool
+		Status     string
+		Health     *struct{ Status string }
+	} `json:"State"`
+}
+
+// service resolves one container to its declared service name, refusing any
+// container which does not belong to the declared project.
+func (p *ProjectController) service(data projectInspection) (string, error) {
+	if data.Config.Labels[composeProjectLabel] != p.project {
+		return "", errors.New("container is not part of the declared project")
+	}
+	name := data.Config.Labels[composeServiceLabel]
+	if !p.writers[name] {
+		return "", errors.New("container service is not a declared writer")
+	}
+	return name, nil
+}
+
+func (p *ProjectController) inspect(ctx context.Context, id string) (Service, error) {
+	if !dockerID(id) {
+		return Service{}, errors.New("immutable Docker ID required")
+	}
+	var data projectInspection
+	if err := p.request(ctx, "GET", "/containers/"+id+"/json", &data); err != nil {
+		return Service{}, err
+	}
+	if data.ID != id {
+		return Service{}, errors.New("container identity mismatch")
+	}
+	name, err := p.service(data)
+	if err != nil {
+		return Service{}, err
+	}
+	if pinned, ok := p.pinned[name]; ok && pinned != id {
+		return Service{}, errors.New("declared project writer identity changed")
+	}
+	if data.State.Paused || data.State.Restarting || data.State.Dead {
+		return Service{}, errors.New("project writer has unstable runtime state")
+	}
+	if data.State.Status != "running" && data.State.Status != "exited" && data.State.Status != "created" {
+		return Service{}, errors.New("unknown project writer runtime state")
+	}
+	if data.State.Running != (data.State.Status == "running") {
+		return Service{}, errors.New("contradictory project writer state")
+	}
+	healthy := data.State.Running && data.State.Health != nil && data.State.Health.Status == "healthy"
+	return Service{ID: id, Running: data.State.Running, Healthy: healthy}, nil
+}
+
+// Inventory enumerates the complete project writer group and rejects an
+// incomplete or extended declaration.
+func (p *ProjectController) Inventory(ctx context.Context) ([]Service, error) {
+	filters, _ := json.Marshal(map[string][]string{"label": {composeProjectLabel + "=" + p.project}})
+	var containers []struct {
+		ID     string            `json:"Id"`
+		Labels map[string]string `json:"Labels"`
+	}
+	if err := p.request(ctx, "GET", "/containers/json?all=1&filters="+url.QueryEscape(string(filters)), &containers); err != nil {
+		return nil, err
+	}
+	if len(containers) == 0 || len(containers) > 256 {
+		return nil, errors.New("empty or oversized project container group")
+	}
+	byService := map[string]string{}
+	for _, container := range containers {
+		service := container.Labels[composeServiceLabel]
+		if service == "" {
+			return nil, errors.New("project container without a compose service label")
+		}
+		if _, duplicate := byService[service]; duplicate {
+			return nil, errors.New("duplicate project service instance")
+		}
+		if !p.writers[service] {
+			if _, declared := p.nonWriter[service]; declared {
+				continue
+			}
+			return nil, errors.New("undeclared project service " + service)
+		}
+		byService[service] = container.ID
+	}
+	for name := range p.writers {
+		if byService[name] == "" {
+			return nil, errors.New("declared project writer is missing")
+		}
+	}
+	items := make([]Service, 0, len(byService))
+	for _, id := range byService {
+		s, err := p.inspect(ctx, id)
+		if err != nil {
+			return nil, err
+		}
+		items = append(items, s)
+	}
+	// Pin after every successful inventory so a later recreation is visible even
+	// when the coordinator journal is inspected outside a run.
+	for name, id := range byService {
+		p.pinned[name] = id
+	}
+	sort.Slice(items, func(i, j int) bool { return items[i].ID < items[j].ID })
+	return items, nil
+}
+
+func (p *ProjectController) wait(ctx context.Context, id string, running bool) error {
+	ticker := time.NewTicker(100 * time.Millisecond)
+	defer ticker.Stop()
+	for {
+		s, err := p.inspect(ctx, id)
+		if err != nil {
+			return err
+		}
+		if s.Running == running && (!running || s.Healthy) {
+			return nil
+		}
+		select {
+		case <-ctx.Done():
+			return errors.New("project writer state did not settle before deadline")
+		case <-ticker.C:
+		}
+	}
+}
+
+// Stop sends SIGTERM only; there is no delayed SIGKILL which could fire after
+// recovery starts the container again.
+func (p *ProjectController) Stop(ctx context.Context, id string) error {
+	bounded, cancel := context.WithTimeout(ctx, p.timeout)
+	defer cancel()
+	s, err := p.inspect(bounded, id)
+	if err != nil {
+		return err
+	}
+	if !s.Running {
+		return nil
+	}
+	if err = p.request(bounded, "POST", "/containers/"+id+"/kill?signal=SIGTERM", nil); err != nil {
+		return err
+	}
+	return p.wait(bounded, id, false)
+}
+
+func (p *ProjectController) Start(ctx context.Context, id string) error {
+	bounded, cancel := context.WithTimeout(ctx, p.timeout)
+	defer cancel()
+	s, err := p.inspect(bounded, id)
+	if err != nil {
+		return err
+	}
+	if !s.Running {
+		if err = p.request(bounded, "POST", "/containers/"+id+"/start", nil); err != nil {
+			return err
+		}
+	}
+	return p.wait(bounded, id, true)
+}
diff --git a/internal/libraryfreeze/project_test.go b/internal/libraryfreeze/project_test.go
new file mode 100644
index 0000000..2c87bfe
--- /dev/null
+++ b/internal/libraryfreeze/project_test.go
@@ -0,0 +1,185 @@
+package libraryfreeze
+
+import (
+	"context"
+	"encoding/json"
+	"net"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+	"time"
+)
+
+type projectFixture struct {
+	appID      string
+	frontID    string
+	appRunning bool
+	appHealthy bool
+	signals    []string
+	services   []string
+}
+
+func newProjectFixture(t *testing.T) (*projectFixture, string) {
+	t.Helper()
+	f := &projectFixture{
+		appID:      strings.Repeat("a", 64),
+		frontID:    strings.Repeat("b", 64),
+		appRunning: true,
+		appHealthy: true,
+		services:   []string{"app", "frontend"},
+	}
+	// A short path: unix socket addresses are length-limited and t.TempDir()
+	// embeds the (long) test name.
+	root, err := os.MkdirTemp(os.TempDir(), "kgp-")
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { os.RemoveAll(root) })
+	socket := filepath.Join(root, "engine.sock")
+	listener, err := net.Listen("unix", socket)
+	if err != nil {
+		t.Fatal(err)
+	}
+	labels := func(service string) map[string]string {
+		return map[string]string{composeProjectLabel: "weknora", composeServiceLabel: service}
+	}
+	server := &http.Server{Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		case r.Method == "GET" && strings.HasSuffix(r.URL.Path, "/containers/json"):
+			if !strings.Contains(r.URL.Query().Get("filters"), "weknora") {
+				t.Error("missing project filter")
+			}
+			items := []map[string]any{}
+			for _, service := range f.services {
+				id := f.appID
+				if service == "frontend" {
+					id = f.frontID
+				}
+				items = append(items, map[string]any{"Id": id, "Labels": labels(service)})
+			}
+			_ = json.NewEncoder(w).Encode(items)
+		case r.Method == "GET" && strings.HasSuffix(r.URL.Path, "/json"):
+			id := strings.TrimPrefix(strings.TrimSuffix(r.URL.Path, "/json"), "/containers/")
+			service := "app"
+			if id == f.frontID {
+				service = "frontend"
+			}
+			status := "exited"
+			health := any(nil)
+			if id == f.appID && f.appRunning {
+				status = "running"
+				if f.appHealthy {
+					health = map[string]string{"Status": "healthy"}
+				} else {
+					health = map[string]string{"Status": "starting"}
+				}
+			}
+			_ = json.NewEncoder(w).Encode(map[string]any{"Id": id, "Config": map[string]any{"Labels": labels(service)},
+				"State": map[string]any{"Running": id == f.appID && f.appRunning, "Status": status, "Health": health}})
+		case r.Method == "POST" && strings.HasSuffix(r.URL.Path, "/kill"):
+			if r.URL.Query().Get("signal") != "SIGTERM" {
+				t.Error("unsafe stop signal")
+			}
+			if !strings.Contains(r.URL.Path, f.appID) {
+				t.Error("stopped an undeclared container")
+			}
+			f.signals = append(f.signals, "stop")
+			f.appRunning = false
+			w.WriteHeader(204)
+		case r.Method == "POST" && strings.HasSuffix(r.URL.Path, "/start"):
+			f.signals = append(f.signals, "start")
+			f.appRunning = true
+			w.WriteHeader(204)
+		default:
+			w.WriteHeader(404)
+		}
+	})}
+	go server.Serve(listener)
+	t.Cleanup(func() { server.Close() })
+	return f, socket
+}
+
+func TestProjectControllerStopsOnlyDeclaredWritersByPinnedIdentity(t *testing.T) {
+	fixture, socket := newProjectFixture(t)
+	control, err := NewProjectController(socket, "weknora", []string{"app"},
+		map[string]string{"frontend": "serves the UI only; never writes knowledge"}, time.Second)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer control.Close()
+	items, err := control.Inventory(context.Background())
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(items) != 1 || items[0].ID != fixture.appID || !items[0].Running || !items[0].Healthy {
+		t.Fatalf("unexpected writer inventory %+v", items)
+	}
+	if err = control.Stop(context.Background(), fixture.appID); err != nil {
+		t.Fatal(err)
+	}
+	if fixture.appRunning {
+		t.Fatal("writer still running after stop")
+	}
+	if err = control.Start(context.Background(), fixture.appID); err != nil {
+		t.Fatal(err)
+	}
+	if len(fixture.signals) != 2 || fixture.signals[0] != "stop" || fixture.signals[1] != "start" {
+		t.Fatalf("unexpected signal order %v", fixture.signals)
+	}
+}
+
+func TestProjectControllerRefusesUndeclaredSibling(t *testing.T) {
+	fixture, socket := newProjectFixture(t)
+	control, err := NewProjectController(socket, "weknora", []string{"app"}, map[string]string{}, time.Second)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer control.Close()
+	if _, err = control.Inventory(context.Background()); err == nil {
+		t.Fatal("undeclared sibling service was accepted")
+	}
+	if len(fixture.signals) != 0 {
+		t.Fatal("refused inventory still signalled a container")
+	}
+}
+
+func TestProjectControllerRefusesReplacedContainerIdentity(t *testing.T) {
+	fixture, socket := newProjectFixture(t)
+	control, err := NewProjectController(socket, "weknora", []string{"app"},
+		map[string]string{"frontend": "serves the UI only; never writes knowledge"}, time.Second)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer control.Close()
+	if _, err = control.Inventory(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	// A recreated container keeps the service name but is a different instance:
+	// stopping it would hit a container the maintenance window never declared.
+	fixture.appID = strings.Repeat("c", 64)
+	if _, err = control.Inventory(context.Background()); err == nil {
+		t.Fatal("recreated writer identity was accepted")
+	}
+}
+
+func TestProjectControllerWaitsForHealthOnStart(t *testing.T) {
+	fixture, socket := newProjectFixture(t)
+	control, err := NewProjectController(socket, "weknora", []string{"app"},
+		map[string]string{"frontend": "serves the UI only; never writes knowledge"}, time.Second)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer control.Close()
+	if _, err = control.Inventory(context.Background()); err != nil {
+		t.Fatal(err)
+	}
+	fixture.appRunning = false
+	fixture.appHealthy = false
+	ctx, cancel := context.WithTimeout(context.Background(), 200*time.Millisecond)
+	defer cancel()
+	if err = control.Start(ctx, fixture.appID); err == nil {
+		t.Fatal("start succeeded without health")
+	}
+}
diff --git a/internal/releaseadapter/v071/library_preflight.go b/internal/releaseadapter/v071/library_preflight.go
new file mode 100644
index 0000000..abf2f31
--- /dev/null
+++ b/internal/releaseadapter/v071/library_preflight.go
@@ -0,0 +1,46 @@
+package v071
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5/pgxpool"
+
+	"knowledge-governance/internal/librarysnapshot"
+)
+
+// Operator preflight surface. These wrappers expose the *same* checks used by
+// the capture path so an operator command can inspect a real source without
+// sealing an artifact, stopping a writer, or writing anything. They add no new
+// acceptance rule: a preflight which passes here is still only a candidate.
+//
+// Nothing here authorizes publication: artifact-acceptance-v1 still requires
+// snapshot-bound content, question/answer and performance acceptance, and
+// production release remains a separate, double-gated decision.
+
+// LibrarySourceSettled reports whether the whole source database has finished
+// recorded processing. It is the identical query CaptureLibrary enforces before
+// and inside the maintenance window.
+func LibrarySourceSettled(ctx context.Context, db *pgxpool.Pool) error {
+	return checkLibrarySourceSettlement(ctx, db)
+}
+
+// ValidateLibraryCandidateForPreflight runs the candidate validator used by
+// ArchiveLibraryCandidate (identity, bidirectional content coverage, generated
+// question coverage, resources and digests) without archiving anything.
+func ValidateLibraryCandidateForPreflight(identity PostgresIdentity, pg PostgresSnapshot, es SearchSnapshot) error {
+	return validateLibraryCandidate(identity, pg, es)
+}
+
+// LibraryContentTables is the stable list of PostgreSQL tables a library
+// snapshot must contain, so an operator view does not hard-code table names.
+func LibraryContentTables() []string {
+	names := make([]string, 0, len(libraryContentQueries)+1)
+	names = append(names, "resources")
+	for _, entry := range libraryContentQueries {
+		names = append(names, entry.name)
+	}
+	return names
+}
+
+// LibrarySnapshotCompatibility is the archive-level compatibility contract.
+type LibrarySnapshotCompatibility = librarysnapshot.Compatibility
diff --git a/scripts/library-capture.sh b/scripts/library-capture.sh
new file mode 100755
index 0000000..81ac478
--- /dev/null
+++ b/scripts/library-capture.sh
@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+# Whole-library capture entry point for the local WKNFull test stack.
+#
+# Every service of the Compose project is declared below: exactly one writer
+# (app) and a reason for each sibling which must NOT be stopped. ProjectController
+# refuses to run if the project gains a service that is not declared here, so a
+# new container cannot be silently left outside the maintenance window.
+#
+# Credentials are read from the running containers at call time and are never
+# printed. Nothing here writes to the source stack except SIGTERM/SIGSTART of the
+# declared writer.
+set -euo pipefail
+ROOT=$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)
+BIN="${LIBRARYCTL_BIN:-$ROOT/libraryctl}"
+if [ ! -x "$BIN" ]; then
+  echo "LIBRARYCTL_MISSING: build it with 'go build -o libraryctl ./cmd/libraryctl'" >&2
+  exit 1
+fi
+# Reasons must not contain commas: the flag is comma-separated.
+NON_WRITERS="frontend=UI only; no knowledge writes"
+NON_WRITERS+=",mcp=read-only MCP server"
+NON_WRITERS+=",dobotai-target=alpine placeholder; no knowledge writes"
+NON_WRITERS+=",docreader=parse RPC service; app persists parse output and settlement requires zero pending ops"
+NON_WRITERS+=",elasticsearch=search store; not an initiator"
+NON_WRITERS+=",postgres=database store; not an initiator"
+NON_WRITERS+=",redis=queue/cache store; not an initiator"
+NON_WRITERS+=",neo4j=graph store; not an initiator"
+NON_WRITERS+=",langfuse-web=LLM observability UI"
+NON_WRITERS+=",langfuse-worker=LLM observability worker; own storage"
+NON_WRITERS+=",langfuse-clickhouse=observability store"
+NON_WRITERS+=",langfuse-minio=observability object store"
+NON_WRITERS+=",langfuse-db-init=one-shot init; exited"
+NON_WRITERS+=",searxng=read-only search proxy"
+NON_WRITERS+=",searxng-init=one-shot init; exited"
+exec "$BIN" "$@" \
+  -source-app WKNFull-app \
+  -source-pg WKNFull-postgres \
+  -source-es WKNFull-elasticsearch \
+  -governance-pg knowledge-governance-p1-postgres-1 \
+  -project weknora071full \
+  -writers app \
+  -non-writers "$NON_WRITERS"
\ No newline at end of file
diff --git a/web/src/App.tsx b/web/src/App.tsx
index 0d213e6..582db36 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -4,6 +4,7 @@ import { DocumentWorkbench } from './DocumentWorkbench'
 import { SourceCatalogBrowser } from './SourceCatalogBrowser'
 import { WeKnoraMonitor } from './WeKnoraMonitor'
 import { VersionHistory } from './VersionHistory'
+import { LibraryVersions } from './LibraryVersions'
 import { QAOperations } from './QAOperations'
 import { SourceLinkManager } from './SourceLinkManager'
 import { SystemSettings } from './SystemSettings'
@@ -62,6 +63,7 @@ const modules: ReadonlyArray<{ id: ModuleId; label: string; icon: string }> = [
   { id: 'tasks', label: '解析监控', icon: '↻' },
   { id: 'qaops', label: '问答运营', icon: '▤' },
   { id: 'releases', label: '发布管理', icon: '⇧' },
+  { id: 'library', label: '整库版本', icon: '▦' },
   { id: 'settings', label: '系统设置', icon: '⚙' },
   { id: 'versions', label: '版本记录', icon: '⌥' },
 ]
@@ -2970,6 +2972,8 @@ export default function App() {
         <SystemSettings />
       ) : workspace.activeTab === 'knowledge' ? (
         <DocumentWorkbench mode="attention" connections={connectionPage.items} />
+      ) : workspace.activeTab === 'library' ? (
+        <LibraryVersions />
       ) : workspace.activeTab === 'versions' ? (
         <VersionHistory />
       ) : workspace.activeTab === 'qaops' ? (
diff --git a/web/src/LibraryVersions.tsx b/web/src/LibraryVersions.tsx
new file mode 100644
index 0000000..ca9b1d3
--- /dev/null
+++ b/web/src/LibraryVersions.tsx
@@ -0,0 +1,258 @@
+import { useCallback, useEffect, useMemo, useState } from 'react'
+import {
+  fetchLibrarySnapshots,
+  formatBytes,
+  scopeLabel,
+  type LibrarySnapshot,
+  type LibrarySnapshotList,
+} from './librarySnapshots'
+import './libraryVersions.css'
+
+// 「整库版本」页：只读展示已封存的整库候选产物（对内/对外各一份最新）。
+// 页面不提供封存按钮：封存要停真实写入者并读来源凭据，只能在目标主机用
+// scripts/library-capture.sh 执行。候选 != 验收通过，也 != 可发布。
+const stamp = (value: string) =>
+  value && Number.isFinite(new Date(value).getTime())
+    ? new Date(value).toLocaleString('zh-CN', {
+        timeZone: 'Asia/Shanghai',
+        year: 'numeric',
+        month: '2-digit',
+        day: '2-digit',
+        hour: '2-digit',
+        minute: '2-digit',
+        hour12: false,
+      })
+    : '—'
+
+const metric = (snapshot: LibrarySnapshot, key: string) => String(snapshot.totals[key] ?? 0)
+
+export function LibraryVersions() {
+  const [page, setPage] = useState<LibrarySnapshotList | null>(null)
+  const [loading, setLoading] = useState(true)
+  const [error, setError] = useState<string | null>(null)
+  const [expanded, setExpanded] = useState<string | null>(null)
+  const [scopeFilter, setScopeFilter] = useState<'all' | 'internal' | 'external'>('all')
+
+  const load = useCallback(async (signal?: AbortSignal) => {
+    setLoading(true)
+    try {
+      const result = await fetchLibrarySnapshots(signal)
+      setPage(result)
+      setError(null)
+    } catch (loadError) {
+      if ((loadError as Error).name === 'AbortError') return
+      setError(loadError instanceof Error ? loadError.message : '加载整库版本失败')
+    } finally {
+      setLoading(false)
+    }
+  }, [])
+
+  useEffect(() => {
+    const controller = new AbortController()
+    void load(controller.signal)
+    return () => controller.abort()
+  }, [load])
+
+  const snapshots = page?.snapshots ?? []
+  const latestByScope = useMemo(() => {
+    const map: Record<string, LibrarySnapshot | undefined> = {}
+    for (const snapshot of snapshots) {
+      if (!map[snapshot.scope]) map[snapshot.scope] = snapshot
+    }
+    return map
+  }, [snapshots])
+  const visible = snapshots.filter((snapshot) => scopeFilter === 'all' || snapshot.scope === scopeFilter)
+
+  return (
+    <section className="library-versions" aria-label="整库版本">
+      <header className="library-versions-header">
+        <div>
+          <h2>整库版本</h2>
+          <p className="library-versions-sub">
+            每个条目是一份<b>完整封存</b>的整库候选：数据库十表、原始索引正文与向量、对象资源与 Wiki 快照，
+            带逐项摘要与兼容契约。封存期间真实写入者被停住，完成后已恢复。
+          </p>
+        </div>
+        <div className="library-versions-actions">
+          <span className="library-versions-usage">
+            共 {snapshots.length} 份 · 归档占用 {formatBytes(page?.stored_bytes ?? 0)}
+          </span>
+          <button type="button" onClick={() => void load()} disabled={loading}>
+            {loading ? '刷新中…' : '刷新'}
+          </button>
+        </div>
+      </header>
+
+      {page && !page.available ? (
+        <div className="library-versions-blocked">
+          <strong>未接线</strong>
+          <p>{page.reason || '归档根未配置'}</p>
+        </div>
+      ) : null}
+      {error ? (
+        <div className="library-versions-blocked">
+          <strong>读取失败</strong>
+          <p>{error}</p>
+        </div>
+      ) : null}
+
+      {page?.available ? (
+        <>
+          <div className="library-versions-scopes">
+            {(['internal', 'external'] as const).map((scope) => {
+              const latest = latestByScope[scope]
+              return (
+                <article key={scope} className={`library-scope-card ${latest ? '' : 'empty'}`}>
+                  <header>
+                    <h3>{scopeLabel(scope)}</h3>
+                    <span className="library-scope-state">{latest ? '已封存' : '尚无封存'}</span>
+                  </header>
+                  {latest ? (
+                    <>
+                      <p className="library-scope-time">封存于 {stamp(latest.created_at)}</p>
+                      <dl className="library-scope-metrics">
+                        <div>
+                          <dt>文档</dt>
+                          <dd>{metric(latest, 'documents')}</dd>
+                        </div>
+                        <div>
+                          <dt>分块</dt>
+                          <dd>{metric(latest, 'chunks')}</dd>
+                        </div>
+                        <div>
+                          <dt>索引</dt>
+                          <dd>{metric(latest, 'index_documents')}</dd>
+                        </div>
+                        <div>
+                          <dt>资源</dt>
+                          <dd>{metric(latest, 'resources')}</dd>
+                        </div>
+                        <div>
+                          <dt>Wiki 页</dt>
+                          <dd>{metric(latest, 'wiki_pages')}</dd>
+                        </div>
+                        <div>
+                          <dt>体积</dt>
+                          <dd>{formatBytes(latest.logical_bytes)}</dd>
+                        </div>
+                      </dl>
+                      <p className="library-scope-id">
+                        快照 <code>{latest.snapshot_id.slice(0, 16)}</code>
+                      </p>
+                    </>
+                  ) : (
+                    <p className="library-scope-hint">
+                      该库没有封存产物。封存在目标主机执行：
+                      <code>scripts/library-capture.sh capture -scope {scope}</code>
+                    </p>
+                  )}
+                </article>
+              )
+            })}
+          </div>
+
+          <div className="library-versions-toolbar">
+            <div className="library-versions-filters" role="group" aria-label="按范围筛选">
+              {(
+                [
+                  { id: 'all', label: '全部' },
+                  { id: 'internal', label: '对内' },
+                  { id: 'external', label: '对外' },
+                ] as const
+              ).map((item) => (
+                <button
+                  key={item.id}
+                  type="button"
+                  className={scopeFilter === item.id ? 'active' : ''}
+                  onClick={() => setScopeFilter(item.id)}
+                >
+                  {item.label}
+                </button>
+              ))}
+            </div>
+            <span className="library-versions-note">{page.capture_note}</span>
+          </div>
+
+          {visible.length === 0 ? (
+            <p className="library-versions-empty">还没有封存产物。</p>
+          ) : (
+            <table className="library-versions-table">
+              <thead>
+                <tr>
+                  <th>封存时间</th>
+                  <th>范围</th>
+                  <th>文档</th>
+                  <th>分块</th>
+                  <th>索引</th>
+                  <th>资源</th>
+                  <th>Wiki</th>
+                  <th>体积</th>
+                  <th>模型 / 维度</th>
+                  <th>快照</th>
+                </tr>
+              </thead>
+              <tbody>
+                {visible.map((snapshot) => (
+                  <tr key={snapshot.snapshot_id}>
+                    <td>{stamp(snapshot.created_at)}</td>
+                    <td>{scopeLabel(snapshot.scope)}</td>
+                    <td>{metric(snapshot, 'documents')}</td>
+                    <td>{metric(snapshot, 'chunks')}</td>
+                    <td>{metric(snapshot, 'index_documents')}</td>
+                    <td>{metric(snapshot, 'resources')}</td>
+                    <td>{metric(snapshot, 'wiki_pages')}</td>
+                    <td title={`逻辑 ${snapshot.logical_bytes} 字节 · 去重后 ${snapshot.unique_bytes} 字节`}>
+                      {formatBytes(snapshot.logical_bytes)}
+                    </td>
+                    <td>
+                      {snapshot.compatibility.embedding_model || '—'} / {snapshot.compatibility.embedding_dimension}
+                    </td>
+                    <td>
+                      <button
+                        type="button"
+                        className="library-snapshot-toggle"
+                        onClick={() =>
+                          setExpanded(expanded === snapshot.snapshot_id ? null : snapshot.snapshot_id)
+                        }
+                        aria-expanded={expanded === snapshot.snapshot_id}
+                      >
+                        <code>{snapshot.snapshot_id.slice(0, 12)}</code>
+                        {expanded === snapshot.snapshot_id ? ' 收起' : ' 分项'}
+                      </button>
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          )}
+
+          {visible
+            .filter((snapshot) => snapshot.snapshot_id === expanded)
+            .map((snapshot) => (
+              <div key={snapshot.snapshot_id} className="library-snapshot-parts">
+                <header>
+                  <strong>{scopeLabel(snapshot.scope)} · {snapshot.snapshot_id}</strong>
+                  <span>
+                    策略 {snapshot.validation_policy || '—'} · WeKnora {snapshot.compatibility.weknora_version} ·
+                    schema {snapshot.compatibility.schema_version} · 映射{' '}
+                    {snapshot.compatibility.index_mapping_sha256.slice(0, 12)}
+                  </span>
+                </header>
+                <ul>
+                  {snapshot.parts.map((part) => (
+                    <li key={`${part.kind}-${part.name}`}>
+                      <span className="library-part-kind">{part.kind}</span>
+                      <span className="library-part-name">{part.name}</span>
+                      <span>{part.count} 项</span>
+                      <span>{formatBytes(part.bytes)}</span>
+                      <code title={part.sha256}>{part.sha256.slice(0, 12)}</code>
+                    </li>
+                  ))}
+                </ul>
+              </div>
+            ))}
+        </>
+      ) : null}
+    </section>
+  )
+}
\ No newline at end of file
diff --git a/web/src/librarySnapshots.ts b/web/src/librarySnapshots.ts
new file mode 100644
index 0000000..493b578
--- /dev/null
+++ b/web/src/librarySnapshots.ts
@@ -0,0 +1,137 @@
+// 「整库版本」页的只读客户端：列已经封存的整库候选产物。
+//
+// 这里没有任何写操作：封存需要维护窗口（停真实写入者）与来源凭据，只能由运维
+// 命令在目标主机执行。页面只负责如实展示已封存的内容，不提供"开始同步"这类
+// 没接线的假按钮。
+
+export interface LibrarySnapshotPart {
+  kind: string
+  name: string
+  sha256: string
+  count: number
+  bytes: number
+}
+
+export interface LibraryCompatibility {
+  weknora_version: string
+  schema_version: number
+  retriever_engine: string
+  embedding_model: string
+  embedding_dimension: number
+  index_mapping_sha256: string
+}
+
+export interface LibrarySnapshot {
+  snapshot_id: string
+  scope: string
+  knowledge_base_id: string
+  tenant_id: number
+  created_at: string
+  validation_policy: string
+  format: string
+  compatibility: LibraryCompatibility
+  parts: LibrarySnapshotPart[]
+  logical_bytes: number
+  unique_bytes: number
+  shared_bytes: number
+  totals: Record<string, number>
+}
+
+export interface LibrarySnapshotList {
+  available: boolean
+  reason: string
+  archive_root: string
+  snapshots: LibrarySnapshot[]
+  stored_bytes: number
+  capture_note: string
+}
+
+const record = (value: unknown): value is Record<string, unknown> =>
+  typeof value === 'object' && value !== null && !Array.isArray(value)
+const text = (value: unknown) => (typeof value === 'string' ? value : '')
+const num = (value: unknown) => (typeof value === 'number' && Number.isFinite(value) ? value : 0)
+const bool = (value: unknown) => value === true
+
+function parsePart(raw: unknown): LibrarySnapshotPart | null {
+  if (!record(raw)) return null
+  const kind = text(raw.kind)
+  const name = text(raw.name)
+  if (!kind || !name) return null
+  return { kind, name, sha256: text(raw.sha256), count: num(raw.count), bytes: num(raw.bytes) }
+}
+
+function parseSnapshot(raw: unknown): LibrarySnapshot | null {
+  if (!record(raw)) return null
+  const snapshotID = text(raw.snapshot_id)
+  if (!snapshotID) return null
+  const compatibility = record(raw.compatibility) ? raw.compatibility : {}
+  const totals: Record<string, number> = {}
+  if (record(raw.totals)) {
+    for (const [key, value] of Object.entries(raw.totals)) totals[key] = num(value)
+  }
+  return {
+    snapshot_id: snapshotID,
+    scope: text(raw.scope),
+    knowledge_base_id: text(raw.knowledge_base_id),
+    tenant_id: num(raw.tenant_id),
+    created_at: text(raw.created_at),
+    validation_policy: text(raw.validation_policy),
+    format: text(raw.format),
+    compatibility: {
+      weknora_version: text(compatibility.weknora_version),
+      schema_version: num(compatibility.schema_version),
+      retriever_engine: text(compatibility.retriever_engine),
+      embedding_model: text(compatibility.embedding_model),
+      embedding_dimension: num(compatibility.embedding_dimension),
+      index_mapping_sha256: text(compatibility.index_mapping_sha256),
+    },
+    parts: Array.isArray(raw.parts)
+      ? raw.parts.map(parsePart).filter((item): item is LibrarySnapshotPart => item !== null)
+      : [],
+    logical_bytes: num(raw.logical_bytes),
+    unique_bytes: num(raw.unique_bytes),
+    shared_bytes: num(raw.shared_bytes),
+    totals,
+  }
+}
+
+export async function fetchLibrarySnapshots(signal?: AbortSignal): Promise<LibrarySnapshotList> {
+  const response = await fetch('/api/v1/library/snapshots', {
+    headers: { Accept: 'application/json' },
+    signal,
+  })
+  const value = (await response.json().catch(() => null)) as unknown
+  if (!response.ok && !record(value)) {
+    throw new Error(`加载整库版本失败（HTTP ${response.status}）`)
+  }
+  if (!record(value)) throw new Error('整库版本响应无效')
+  const snapshots = Array.isArray(value.snapshots)
+    ? value.snapshots.map(parseSnapshot).filter((item): item is LibrarySnapshot => item !== null)
+    : []
+  return {
+    available: bool(value.available),
+    reason: text(value.reason),
+    archive_root: text(value.archive_root),
+    snapshots,
+    stored_bytes: num(value.stored_bytes),
+    capture_note: text(value.capture_note),
+  }
+}
+
+export function formatBytes(bytes: number): string {
+  if (!Number.isFinite(bytes) || bytes <= 0) return '0 B'
+  const units = ['B', 'KB', 'MB', 'GB', 'TB']
+  let index = 0
+  let value = bytes
+  while (value >= 1024 && index < units.length - 1) {
+    value /= 1024
+    index += 1
+  }
+  return `${value >= 10 || index === 0 ? value.toFixed(0) : value.toFixed(1)} ${units[index]}`
+}
+
+export function scopeLabel(scope: string): string {
+  if (scope === 'internal') return '对内'
+  if (scope === 'external') return '对外'
+  return scope || '未知范围'
+}
\ No newline at end of file
diff --git a/web/src/libraryVersions.css b/web/src/libraryVersions.css
new file mode 100644
index 0000000..593a4ac
--- /dev/null
+++ b/web/src/libraryVersions.css
@@ -0,0 +1,265 @@
+/* Whole-library versions: scope cards first, then a compact sealed-artifact table. */
+.library-versions {
+  display: flex;
+  flex-direction: column;
+  gap: 18px;
+  min-width: 0;
+  padding: 24px;
+  color: var(--ink-base);
+}
+.library-versions-header,
+.library-versions-toolbar,
+.library-snapshot-parts,
+.library-scope-card {
+  background: var(--bg-panel, #fff);
+  border: 1px solid var(--border-base, #e2e8f0);
+  border-radius: 10px;
+  padding: 20px;
+  min-width: 0;
+}
+.library-versions-header {
+  display: flex;
+  align-items: flex-start;
+  justify-content: space-between;
+  gap: 16px;
+  flex-wrap: wrap;
+}
+.library-versions h2 {
+  margin: 0 0 6px;
+  font-size: 22px;
+}
+.library-versions-sub {
+  margin: 0;
+  max-width: 68ch;
+  color: var(--ink-mute, #64748b);
+  font-size: 13px;
+  line-height: 1.6;
+}
+.library-versions-actions {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  flex-shrink: 0;
+}
+.library-versions-usage {
+  font-size: 13px;
+  color: var(--ink-mute, #64748b);
+  font-variant-numeric: tabular-nums;
+}
+.library-versions-actions button,
+.library-versions-filters button {
+  padding: 7px 14px;
+  border-radius: 8px;
+  border: 1px solid var(--border-base, #e2e8f0);
+  background: var(--bg-panel, #fff);
+  color: inherit;
+  cursor: pointer;
+}
+.library-versions-actions button:disabled {
+  cursor: progress;
+  opacity: 0.6;
+}
+.library-versions-blocked {
+  border: 1px solid #f3c2b8;
+  background: #fff6f3;
+  border-radius: 10px;
+  padding: 16px 20px;
+}
+.library-versions-blocked strong {
+  display: block;
+  margin-bottom: 4px;
+  color: #a03a1e;
+}
+.library-versions-blocked p {
+  margin: 0;
+  font-size: 13px;
+  color: #7c2d12;
+}
+.library-versions-scopes {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
+  gap: 16px;
+}
+.library-scope-card header {
+  display: flex;
+  align-items: baseline;
+  justify-content: space-between;
+  gap: 12px;
+}
+.library-scope-card h3 {
+  margin: 0;
+  font-size: 18px;
+}
+.library-scope-state {
+  font-size: 12px;
+  padding: 2px 10px;
+  border-radius: 999px;
+  background: #ecfdf5;
+  color: #047857;
+  border: 1px solid #a7f3d0;
+}
+.library-scope-card.empty .library-scope-state {
+  background: #f8fafc;
+  color: #64748b;
+  border-color: #e2e8f0;
+}
+.library-scope-time {
+  margin: 8px 0 14px;
+  font-size: 12px;
+  color: var(--ink-mute, #64748b);
+}
+.library-scope-metrics {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 10px;
+  margin: 0 0 12px;
+}
+.library-scope-metrics div {
+  border: 1px solid var(--border-base, #e2e8f0);
+  border-radius: 8px;
+  padding: 8px 10px;
+}
+.library-scope-metrics dt {
+  font-size: 12px;
+  color: var(--ink-mute, #64748b);
+}
+.library-scope-metrics dd {
+  margin: 2px 0 0;
+  font-size: 18px;
+  font-variant-numeric: tabular-nums;
+}
+.library-scope-id,
+.library-scope-hint {
+  margin: 0;
+  font-size: 12px;
+  color: var(--ink-mute, #64748b);
+  overflow-wrap: anywhere;
+}
+.library-scope-hint code,
+.library-scope-id code {
+  font-size: 12px;
+  background: #f1f5f9;
+  border-radius: 5px;
+  padding: 1px 6px;
+}
+.library-versions-toolbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 16px;
+  padding: 12px 16px;
+  flex-wrap: wrap;
+}
+.library-versions-filters {
+  display: flex;
+  gap: 8px;
+}
+.library-versions-filters button.active {
+  border-color: #2563eb;
+  color: #1d4ed8;
+  background: #eff6ff;
+}
+.library-versions-note {
+  font-size: 12px;
+  color: var(--ink-mute, #64748b);
+  max-width: 70ch;
+  line-height: 1.5;
+}
+.library-versions-empty {
+  margin: 0;
+  padding: 24px;
+  border: 1px dashed var(--border-base, #e2e8f0);
+  border-radius: 10px;
+  color: var(--ink-mute, #64748b);
+  font-size: 13px;
+}
+.library-versions-table {
+  width: 100%;
+  border-collapse: collapse;
+  background: var(--bg-panel, #fff);
+  border: 1px solid var(--border-base, #e2e8f0);
+  border-radius: 10px;
+  overflow: hidden;
+  font-size: 13px;
+}
+.library-versions-table th,
+.library-versions-table td {
+  padding: 10px 12px;
+  text-align: left;
+  border-bottom: 1px solid var(--border-base, #eef2f7);
+  white-space: nowrap;
+}
+.library-versions-table th {
+  font-weight: 600;
+  font-size: 12px;
+  color: var(--ink-mute, #64748b);
+  background: #f8fafc;
+}
+.library-versions-table td {
+  font-variant-numeric: tabular-nums;
+}
+.library-snapshot-toggle {
+  border: 1px solid var(--border-base, #e2e8f0);
+  border-radius: 7px;
+  background: #fff;
+  padding: 4px 8px;
+  cursor: pointer;
+  font-size: 12px;
+  color: inherit;
+}
+.library-snapshot-parts header {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+  margin-bottom: 12px;
+  font-size: 12px;
+  color: var(--ink-mute, #64748b);
+  overflow-wrap: anywhere;
+}
+.library-snapshot-parts header strong {
+  font-size: 14px;
+  color: var(--ink-base);
+}
+.library-snapshot-parts ul {
+  list-style: none;
+  margin: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+.library-snapshot-parts li {
+  display: grid;
+  grid-template-columns: 90px minmax(140px, 2fr) 80px 90px 110px;
+  gap: 10px;
+  align-items: center;
+  font-size: 12px;
+  padding: 6px 8px;
+  border-radius: 7px;
+  background: #f8fafc;
+  overflow-wrap: anywhere;
+}
+.library-part-kind {
+  font-size: 11px;
+  text-transform: uppercase;
+  letter-spacing: 0.04em;
+  color: var(--ink-mute, #64748b);
+}
+.library-part-name {
+  font-weight: 600;
+}
+@media (max-width: 760px) {
+  .library-versions {
+    padding: 12px;
+  }
+  .library-versions-table {
+    display: block;
+    overflow-x: auto;
+  }
+  .library-snapshot-parts li {
+    grid-template-columns: 1fr;
+  }
+  .library-scope-metrics {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+}
\ No newline at end of file
diff --git a/web/src/workspace.ts b/web/src/workspace.ts
index 66f4205..086d982 100644
--- a/web/src/workspace.ts
+++ b/web/src/workspace.ts
@@ -1,11 +1,20 @@
-export type ModuleId = 'dashboard' | 'sources' | 'knowledge' | 'tasks' | 'releases' | 'settings' | 'versions' | 'qaops'
+export type ModuleId =
+  | 'dashboard'
+  | 'sources'
+  | 'knowledge'
+  | 'tasks'
+  | 'releases'
+  | 'library'
+  | 'settings'
+  | 'versions'
+  | 'qaops'
 
 export interface WorkspaceState {
   openTabs: ModuleId[]
   activeTab: ModuleId
 }
 
-const moduleIds = new Set<ModuleId>(['dashboard', 'tasks', 'releases', 'settings', 'qaops'])
+const moduleIds = new Set<ModuleId>(['dashboard', 'tasks', 'releases', 'library', 'settings', 'qaops'])
 
 export const initialWorkspace: WorkspaceState = {
   openTabs: ['dashboard'],