diff --git a/backend/internal/app/certificate_tasks.go b/backend/internal/app/certificate_tasks.go
index 699a575..f6354ad 100644
--- a/backend/internal/app/certificate_tasks.go
+++ b/backend/internal/app/certificate_tasks.go
@@ -53,6 +53,7 @@ func (w *certificateTaskWorkflow) run(ctx context.Context, id, taskType, stage s
 		finished := time.Now().UTC()
 		status, message := certificateTaskOutcome(resultErr)
 		auditErr := w.audit.CreateAuditLog(finishCtx, repository.AuditLog{
+			TaskID: task.ID,
 			Action: taskType, ResourceType: "domain", ResourceID: id,
 			Status: status, Message: message,
 		})
@@ -67,6 +68,7 @@ func (w *certificateTaskWorkflow) run(ctx context.Context, id, taskType, stage s
 		}
 	}()
 	if err := w.audit.CreateAuditLog(ctx, repository.AuditLog{
+		TaskID: task.ID,
 		Action: taskType, ResourceType: "domain", ResourceID: id,
 		Status: "running", Message: "开始执行证书工作流",
 	}); err != nil {
diff --git a/backend/internal/app/certificate_tasks_test.go b/backend/internal/app/certificate_tasks_test.go
index cd27cfe..78a3939 100644
--- a/backend/internal/app/certificate_tasks_test.go
+++ b/backend/internal/app/certificate_tasks_test.go
@@ -40,6 +40,9 @@ func assertCertificateTask(t *testing.T, a *App, status string, statuses ...stri
 		t.Fatalf("任务数量错误：%+v %v", items, err)
 	}
 	item := items[0]
+	if item.ScopeType != repository.ScopeProject || item.ProjectID != domain.DefaultProjectID || item.OperatorID != "" {
+		t.Fatalf("后台任务范围错误或伪造操作者：%+v", item)
+	}
 	if item.Status != status || item.StartedAt == nil || item.FinishedAt == nil {
 		t.Fatalf("任务未正确收尾：%+v", item)
 	}
@@ -59,6 +62,9 @@ func assertCertificateTask(t *testing.T, a *App, status string, statuses ...stri
 	if err := a.Database.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM audit_logs WHERE action = ? AND resource_id = ? AND status = ?", item.TaskType, item.DomainID, status).Scan(&count); err != nil || count != 1 {
 		t.Fatalf("审计记录缺失：%d %v", count, err)
 	}
+	if err := a.Database.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM audit_logs WHERE task_id = ? AND scope_type = 'project' AND project_id = ? AND operator_id = '' AND status IN ('running', ?)", item.ID, item.ProjectID, status).Scan(&count); err != nil || count != 2 {
+		t.Fatalf("后台任务开始与收尾审计关联缺失：%d，%v", count, err)
+	}
 	return item
 }
 
diff --git a/backend/internal/app/management_renewal.go b/backend/internal/app/management_renewal.go
index 6d94fa2..1c6c6c3 100644
--- a/backend/internal/app/management_renewal.go
+++ b/backend/internal/app/management_renewal.go
@@ -14,7 +14,7 @@ import (
 	"git.pcux.cn/xuans/Scert/backend/internal/repository"
 )
 
-const managementResourceID = "management-certificate"
+const managementResourceID = repository.ManagementResourceID
 
 type managementActivator interface {
 	Ready(context.Context, httpapi.ManagementCertificateState) error
@@ -106,12 +106,14 @@ func (m *managementRenewal) renew(ctx context.Context, state httpapi.ManagementC
 		finished := time.Now().UTC()
 		taskErr := m.tasks.UpdateTask(finishCtx, task.ID, status, stage, message, &started, &finished)
 		auditErr := m.audit.CreateAuditLog(finishCtx, repository.AuditLog{
+			TaskID: task.ID,
 			Action: "management_renewal", ResourceType: "management_certificate", ResourceID: managementResourceID,
 			Status: status, Message: state.Hostname + "：" + message,
 		})
 		resultErr = errors.Join(resultErr, taskErr, auditErr)
 	}()
 	if err := m.audit.CreateAuditLog(ctx, repository.AuditLog{
+		TaskID: task.ID,
 		Action: "management_renewal", ResourceType: "management_certificate", ResourceID: managementResourceID,
 		Status: "running", Message: state.Hostname + "：开始管理证书续期",
 	}); err != nil {
diff --git a/backend/internal/app/management_renewal_test.go b/backend/internal/app/management_renewal_test.go
index 02a9eee..2d4cbb9 100644
--- a/backend/internal/app/management_renewal_test.go
+++ b/backend/internal/app/management_renewal_test.go
@@ -94,6 +94,9 @@ func (f *managementFixture) assertTask(t *testing.T, status string, attempts int
 		t.Fatalf("管理任务未独立持久化：%+v %v", items, err)
 	}
 	item := items[0]
+	if item.ScopeType != repository.ScopeSystem || item.ProjectID != "" || item.OperatorID != "" {
+		t.Fatalf("管理任务没有保持系统范围：%+v", item)
+	}
 	if item.Status != status || item.FinishedAt == nil || item.TaskType != "management_renewal" {
 		t.Fatalf("管理任务终态异常：%+v", item)
 	}
@@ -110,6 +113,9 @@ func (f *managementFixture) assertTask(t *testing.T, status string, attempts int
 	if err := f.app.Database.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM audit_logs WHERE action = ? AND status = ?", "management_renewal", status).Scan(&count); err != nil || count != 1 {
 		t.Fatalf("管理续期审计缺失：%d %v", count, err)
 	}
+	if err := f.app.Database.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM audit_logs WHERE action = 'management_renewal' AND (task_id <> ? OR scope_type <> 'system' OR project_id <> '' OR operator_id <> '')", item.ID).Scan(&count); err != nil || count != 0 {
+		t.Fatalf("管理续期审计范围或关联错误：%d，%v", count, err)
+	}
 	return item
 }
 
@@ -119,7 +125,11 @@ func TestManagementRenewalPersistsWithoutBusinessDomain(t *testing.T) {
 	if err != nil || report.Checked != 1 || report.Selected != 1 || report.Succeeded != 1 || f.issues != 1 || f.activator.calls != 1 {
 		t.Fatalf("管理续期未完成：%+v %v", report, err)
 	}
-	f.assertTask(t, "success", 1)
+	task := f.assertTask(t, "success", 1)
+	var count int
+	if err := f.app.Database.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM audit_logs WHERE task_id = ? AND status IN ('running', 'success')", task.ID).Scan(&count); err != nil || count != 2 {
+		t.Fatalf("正常管理续期缺少开始或收尾审计：%d，%v", count, err)
+	}
 	items, err := f.app.Repository.List(t.Context())
 	if err != nil || len(items) != 0 {
 		t.Fatalf("管理续期不得创建业务域名：%+v %v", items, err)
diff --git a/backend/internal/cli/sqlite_upgrade_cli_test.go b/backend/internal/cli/sqlite_upgrade_cli_test.go
index ebc67e3..1b44c20 100644
--- a/backend/internal/cli/sqlite_upgrade_cli_test.go
+++ b/backend/internal/cli/sqlite_upgrade_cli_test.go
@@ -241,7 +241,7 @@ func assertSQLiteCLIUpgradeUsable(t *testing.T, fixture sqliteBusinessFixture) {
 	}
 	defer db.Close()
 	var version, bindings int
-	if err := db.DB.QueryRowContext(t.Context(), "SELECT MAX(version) FROM schema_migrations").Scan(&version); err != nil || version != 12 {
+	if err := db.DB.QueryRowContext(t.Context(), "SELECT MAX(version) FROM schema_migrations").Scan(&version); err != nil || version != 13 {
 		t.Fatalf("正式应用入口未完成历史升级：%d，%v", version, err)
 	}
 	project, err := repository.NewSQLProjectRepository(db.DB).GetProject(t.Context(), domain.DefaultProjectID)
@@ -249,7 +249,7 @@ func assertSQLiteCLIUpgradeUsable(t *testing.T, fixture sqliteBusinessFixture) {
 		t.Fatalf("正式应用入口未保留默认项目：%+v，%v", project, err)
 	}
 	task, err := repository.NewSQLTaskRepository(db.DB).GetTask(t.Context(), "task")
-	if err != nil || task.Message != "历史任务" || task.DomainID != "domain" || task.Status != "success" {
+	if err != nil || task.Message != "历史任务" || task.DomainID != "domain" || task.Status != "success" || task.ScopeType != repository.ScopeProject || task.ProjectID != domain.DefaultProjectID {
 		t.Fatalf("历史任务不可用：%v", err)
 	}
 	if err := db.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM domain_servers WHERE domain_id = 'domain' AND server_id = 'server'").Scan(&bindings); err != nil || bindings != 1 {
diff --git a/backend/internal/database/history_scope.go b/backend/internal/database/history_scope.go
new file mode 100644
index 0000000..c6f25fa
--- /dev/null
+++ b/backend/internal/database/history_scope.go
@@ -0,0 +1,42 @@
+package database
+
+import (
+	"context"
+	"database/sql"
+	"fmt"
+)
+
+// 历史范围是不可级联删除的快照，不强行给已删除资源补默认项目或操作者。
+// MySQL 的部分 DDL 重试只回填仍未知的记录，不覆盖已经保存的范围。
+func backfillHistoryScope(ctx context.Context, db interface {
+	ExecContext(context.Context, string, ...any) (sql.Result, error)
+}) error {
+	statements := []string{
+		`UPDATE tasks SET scope_type = 'system' WHERE scope_type = 'unknown'
+			AND task_type = 'management_renewal' AND domain_id = 'management-certificate'`,
+		`UPDATE tasks SET scope_type = 'project',
+			project_id = (SELECT d.project_id FROM domains d WHERE d.id = tasks.domain_id)
+			WHERE scope_type = 'unknown' AND EXISTS (SELECT 1 FROM domains d WHERE d.id = tasks.domain_id)`,
+		`UPDATE audit_logs SET scope_type = 'system' WHERE scope_type = 'unknown'
+			AND (resource_type IN ('auth', 'user', 'super_admin')
+			OR (resource_type = 'management_certificate' AND resource_id = 'management-certificate'))`,
+		`UPDATE audit_logs SET task_id = resource_id WHERE resource_type = 'task' AND task_id = ''`,
+		`UPDATE audit_logs SET scope_type = (SELECT t.scope_type FROM tasks t WHERE t.id = audit_logs.task_id),
+			project_id = (SELECT t.project_id FROM tasks t WHERE t.id = audit_logs.task_id)
+			WHERE scope_type = 'unknown' AND task_id <> '' AND EXISTS (SELECT 1 FROM tasks t WHERE t.id = audit_logs.task_id)`,
+		`UPDATE audit_logs SET scope_type = 'project',
+			project_id = (SELECT d.project_id FROM domains d WHERE d.id = audit_logs.resource_id)
+			WHERE scope_type = 'unknown' AND resource_type IN ('domain', 'certificate')
+			AND EXISTS (SELECT 1 FROM domains d WHERE d.id = audit_logs.resource_id)`,
+		`UPDATE audit_logs SET scope_type = 'project',
+			project_id = (SELECT s.project_id FROM servers s WHERE s.id = audit_logs.resource_id)
+			WHERE scope_type = 'unknown' AND resource_type = 'server'
+			AND EXISTS (SELECT 1 FROM servers s WHERE s.id = audit_logs.resource_id)`,
+	}
+	for _, statement := range statements {
+		if _, err := db.ExecContext(ctx, statement); err != nil {
+			return fmt.Errorf("回填任务审计历史范围失败：%w", err)
+		}
+	}
+	return nil
+}
diff --git a/backend/internal/database/history_scope_test.go b/backend/internal/database/history_scope_test.go
new file mode 100644
index 0000000..a8333f2
--- /dev/null
+++ b/backend/internal/database/history_scope_test.go
@@ -0,0 +1,223 @@
+package database
+
+import (
+	"database/sql"
+	"strings"
+	"testing"
+)
+
+func seedHistoryScope(t *testing.T, db *sql.DB, driver string) {
+	t.Helper()
+	if _, err := db.ExecContext(t.Context(), migrationTableSQL(driver)); err != nil {
+		t.Fatal(err)
+	}
+	for version := 1; version <= 12; version++ {
+		if err := applyMigration(t.Context(), db, driver, version); err != nil {
+			t.Fatal(err)
+		}
+	}
+	for _, statement := range []string{
+		`INSERT INTO domains (id, name, certificate_type, sans_json, status) VALUES ('domain', 'history.example.test', 'single', '[]', 'pending')`,
+		`INSERT INTO servers (id, name, address, port, username, private_key_ref, host_key_fingerprint, certificate_path, private_key_path, certificate_chain_path, web_server, reload_command_json, validation_command_json, ssh_key_error) VALUES ('server', '历史服务器', '192.0.2.1', 22, 'deploy', 'secret://test', 'test-only', '/test/cert.pem', '/test/key.pem', '/test/chain.pem', 'nginx', '[]', '[]', '')`,
+		`INSERT INTO tasks (id, domain_id, task_type, status, message, operator_id) VALUES
+			('business', 'domain', 'certificate_issue', 'success', '保留原记录', 'known-actor'),
+			('orphan', 'deleted-domain', 'certificate_issue', 'success', '保留原记录', ''),
+			('management', 'management-certificate', 'management_renewal', 'success', '保留原记录', ''),
+			('unknown', 'management-certificate', 'certificate_issue', 'success', '保留原记录', '')`,
+		`INSERT INTO task_attempts (id, task_id, attempt_number, stage, status, message) VALUES
+			('business-attempt', 'business', 1, 'issue', 'success', '保留原记录'),
+			('deleted-attempt', 'deleted-task', 1, 'issue', 'success', '保留原记录')`,
+		`INSERT INTO audit_logs (action, resource_type, resource_id, status, message) VALUES
+			('business', 'domain', 'domain', 'success', '保留原记录'),
+			('certificate', 'certificate', 'domain', 'success', '保留原记录'),
+			('server', 'server', 'server', 'success', '保留原记录'),
+			('orphan', 'domain', 'deleted-domain', 'success', '保留原记录'),
+			('task', 'task', 'business', 'success', '保留原记录'),
+			('deleted-task', 'task', 'deleted-task', 'success', '保留原记录'),
+			('management', 'management_certificate', 'management-certificate', 'success', '保留原记录'),
+			('unknown', 'management_certificate', 'different', 'success', '保留原记录'),
+			('auth', 'auth', 'login', 'success', '保留原记录')`,
+	} {
+		if _, err := db.ExecContext(t.Context(), statement); err != nil {
+			t.Fatal(err)
+		}
+	}
+}
+
+func assertHistoryScope(t *testing.T, db *sql.DB) {
+	t.Helper()
+	rows, err := db.QueryContext(t.Context(), `SELECT id, scope_type, project_id, operator_id, message FROM tasks ORDER BY id`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	count := 0
+	for rows.Next() {
+		var id, scope, project, actor, message string
+		if err := rows.Scan(&id, &scope, &project, &actor, &message); err != nil {
+			t.Fatal(err)
+		}
+		wantScope, wantProject, wantActor := "unknown", "", ""
+		if id == "business" {
+			wantScope, wantProject, wantActor = "project", "default", "known-actor"
+		}
+		if id == "management" {
+			wantScope = "system"
+		}
+		if scope != wantScope || project != wantProject || actor != wantActor || message != "保留原记录" {
+			t.Errorf("任务历史错误：%s %s %s %s", id, scope, project, actor)
+		}
+		count++
+	}
+	if err := rows.Err(); err != nil {
+		t.Fatal(err)
+	}
+	if err := rows.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if count != 4 {
+		t.Fatalf("任务历史丢失：%d", count)
+	}
+	rows, err = db.QueryContext(t.Context(), `SELECT action, scope_type, project_id, task_id, operator_id, message FROM audit_logs`)
+	if err != nil {
+		t.Fatal(err)
+	}
+	count = 0
+	for rows.Next() {
+		var action, scope, project, task, actor, message string
+		if err := rows.Scan(&action, &scope, &project, &task, &actor, &message); err != nil {
+			t.Fatal(err)
+		}
+		wantScope, wantProject, wantTask := "unknown", "", ""
+		switch action {
+		case "business", "certificate", "server", "task":
+			wantScope, wantProject = "project", "default"
+		case "management", "auth":
+			wantScope = "system"
+		}
+		if action == "task" {
+			wantTask = "business"
+		}
+		if action == "deleted-task" {
+			wantTask = "deleted-task"
+		}
+		if scope != wantScope || project != wantProject || task != wantTask || actor != "" || message != "保留原记录" {
+			t.Errorf("审计历史错误：%s %s %s %s %s", action, scope, project, task, actor)
+		}
+		count++
+	}
+	if err := rows.Err(); err != nil {
+		t.Fatal(err)
+	}
+	if err := rows.Close(); err != nil {
+		t.Fatal(err)
+	}
+	if count != 9 {
+		t.Fatalf("审计历史丢失：%d", count)
+	}
+	if err := db.QueryRowContext(t.Context(), `SELECT COUNT(*) FROM task_attempts WHERE message = '保留原记录'`).Scan(&count); err != nil || count != 2 {
+		t.Fatalf("历史尝试被改写或删除：%d，%v", count, err)
+	}
+}
+
+func TestHistoryScopeSQLiteMigration(t *testing.T) {
+	db, err := Open(t.Context(), sqliteBusinessUpgradeConfig(t))
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer db.Close()
+	seedHistoryScope(t, db.DB, "sqlite")
+	before := snapshotSQLiteHistoricalBusiness(t, db.DB)
+	if err := Migrate(t.Context(), db.DB, "sqlite"); err != nil {
+		t.Fatal(err)
+	}
+	assertSQLiteHistoricalBusiness(t, db.DB, before)
+	assertHistoryScope(t, db.DB)
+	after := snapshotSQLiteHistoricalBusiness(t, db.DB)
+	if err := Migrate(t.Context(), db.DB, "sqlite"); err != nil {
+		t.Fatal(err)
+	}
+	assertSQLiteHistoricalBusiness(t, db.DB, after)
+}
+
+func TestHistoryScopeSQLiteMigrationRollback(t *testing.T) {
+	for _, tc := range []struct{ name, setup, repair string }{
+		{"version", `CREATE TRIGGER fail_history_version BEFORE INSERT ON schema_migrations WHEN NEW.version = 13 BEGIN SELECT RAISE(ABORT, 'test-only'); END`, `DROP TRIGGER fail_history_version`},
+		{"backfill", `CREATE TRIGGER fail_history_backfill BEFORE UPDATE ON audit_logs BEGIN SELECT RAISE(ABORT, 'test-only'); END`, `DROP TRIGGER fail_history_backfill`},
+		{"index", `CREATE INDEX idx_audit_project_history ON audit_logs(status)`, `DROP INDEX idx_audit_project_history`},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			db, err := Open(t.Context(), sqliteBusinessUpgradeConfig(t))
+			if err != nil {
+				t.Fatal(err)
+			}
+			defer db.Close()
+			seedHistoryScope(t, db.DB, "sqlite")
+			if _, err := db.DB.ExecContext(t.Context(), tc.setup); err != nil {
+				t.Fatal(err)
+			}
+			before := snapshotSQLiteHistoricalBusiness(t, db.DB)
+			schemaQuery := `SELECT type, name, sql FROM sqlite_master ORDER BY name`
+			schema := snapshotSQLiteUpgradeQuery(t, db.DB, schemaQuery)
+			if err := Migrate(t.Context(), db.DB, "sqlite"); err == nil {
+				t.Fatal("故障迁移未拒绝")
+			}
+			assertSQLiteHistoricalBusiness(t, db.DB, before)
+			if snapshotSQLiteUpgradeQuery(t, db.DB, schemaQuery) != schema {
+				t.Fatal("失败迁移没有完整回滚模式")
+			}
+			if version, err := currentMigrationVersion(t.Context(), db.DB); err != nil || version != 12 {
+				t.Fatalf("失败迁移版本错误：%d，%v", version, err)
+			}
+			if _, err := db.DB.ExecContext(t.Context(), tc.repair); err != nil {
+				t.Fatal(err)
+			}
+			for repeat := 0; repeat < 2; repeat++ {
+				if err := Migrate(t.Context(), db.DB, "sqlite"); err != nil {
+					t.Fatal(err)
+				}
+			}
+			assertHistoryScope(t, db.DB)
+		})
+	}
+}
+
+func TestHistoryScopeMySQLMigrationRetry(t *testing.T) {
+	fixture := startRealMySQL(t)
+	for _, phase := range []string{"backfill", "version"} {
+		t.Run(phase, func(t *testing.T) {
+			db := fixture.database(t)
+			ctx := t.Context()
+			seedHistoryScope(t, db.DB, "mysql")
+			var schema string
+			if err := db.DB.QueryRowContext(ctx, "SELECT DATABASE()").Scan(&schema); err != nil {
+				t.Fatal(err)
+			}
+			schema = "`" + strings.ReplaceAll(schema, "`", "``") + "`"
+			target := "BEFORE INSERT ON " + schema + ".schema_migrations"
+			if phase == "backfill" {
+				target = "BEFORE UPDATE ON " + schema + ".audit_logs"
+			}
+			if _, err := fixture.admin.ExecContext(ctx, `CREATE TRIGGER `+schema+`.fail_history `+target+` FOR EACH ROW SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'test-only'`); err != nil {
+				t.Fatal(err)
+			}
+			if err := Migrate(ctx, db.DB, "mysql"); err == nil {
+				t.Fatal("故障未阻断迁移")
+			}
+			if version, err := currentMigrationVersion(ctx, db.DB); err != nil || version != 12 {
+				t.Fatalf("失败版本错误：%d，%v", version, err)
+			}
+			if _, err := fixture.admin.ExecContext(ctx, "DROP TRIGGER "+schema+".fail_history"); err != nil {
+				t.Fatal(err)
+			}
+			for repeat := 0; repeat < 2; repeat++ {
+				if err := Migrate(ctx, db.DB, "mysql"); err != nil {
+					t.Fatal(err)
+				}
+			}
+			assertHistoryScope(t, db.DB)
+			if version, err := currentMigrationVersion(ctx, db.DB); err != nil || version != 13 {
+				t.Fatalf("重试版本错误：%d，%v", version, err)
+			}
+		})
+	}
+}
diff --git a/backend/internal/database/migrate.go b/backend/internal/database/migrate.go
index eaff615..01bbed5 100644
--- a/backend/internal/database/migrate.go
+++ b/backend/internal/database/migrate.go
@@ -14,6 +14,7 @@ import (
 //go:embed migrations/sqlite/0010_projects.sql migrations/mysql/0010_projects.sql migrations/postgres/0010_projects.sql
 //go:embed migrations/sqlite/0011_resource_projects.sql migrations/mysql/0011_resource_projects.sql migrations/postgres/0011_resource_projects.sql
 //go:embed migrations/sqlite/0012_resource_replacement.sql migrations/mysql/0012_resource_replacement.sql migrations/postgres/0012_resource_replacement.sql
+//go:embed migrations/sqlite/0013_history_scope.sql migrations/mysql/0013_history_scope.sql migrations/postgres/0013_history_scope.sql
 var migrationFiles embed.FS
 
 func Migrate(ctx context.Context, db *sql.DB, driver string) error {
@@ -38,7 +39,7 @@ func Migrate(ctx context.Context, db *sql.DB, driver string) error {
 	return nil
 }
 
-const latestMigrationVersion = 12
+const latestMigrationVersion = 13
 
 // currentMigrationVersion 在执行业务迁移前拒绝新版数据库及不连续的迁移历史。
 func currentMigrationVersion(ctx context.Context, db *sql.DB) (int, error) {
@@ -90,6 +91,11 @@ func applyMigration(ctx context.Context, db *sql.DB, driver string, version int)
 				return fmt.Errorf("执行数据库迁移失败：%w", err)
 			}
 		}
+		if version == 13 {
+			if err := backfillHistoryScope(ctx, db); err != nil {
+				return err
+			}
+		}
 		if _, err := db.ExecContext(ctx, "INSERT INTO schema_migrations (version) VALUES (?)", version); err != nil {
 			return fmt.Errorf("记录迁移版本失败：%w", err)
 		}
@@ -117,6 +123,12 @@ func applyMigration(ctx context.Context, db *sql.DB, driver string, version int)
 			return err
 		}
 	}
+	if version == 13 {
+		if err := backfillHistoryScope(ctx, tx); err != nil {
+			_ = tx.Rollback()
+			return err
+		}
+	}
 	migrationVersionInsert := "INSERT INTO schema_migrations (version) VALUES (?)"
 	if driver == "postgres" {
 		migrationVersionInsert = "INSERT INTO schema_migrations (version) VALUES ($1)"
@@ -192,6 +204,8 @@ func migrationName(version int) string {
 		return "resource_projects"
 	case 12:
 		return "resource_replacement"
+	case 13:
+		return "history_scope"
 	default:
 		return "unknown"
 	}
diff --git a/backend/internal/database/migrations/mysql/0013_history_scope.sql b/backend/internal/database/migrations/mysql/0013_history_scope.sql
new file mode 100644
index 0000000..6317e51
--- /dev/null
+++ b/backend/internal/database/migrations/mysql/0013_history_scope.sql
@@ -0,0 +1,9 @@
+ALTER TABLE tasks ADD COLUMN scope_type VARCHAR(16) NOT NULL DEFAULT 'unknown';
+ALTER TABLE tasks ADD COLUMN project_id VARCHAR(36) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN scope_type VARCHAR(16) NOT NULL DEFAULT 'unknown';
+ALTER TABLE audit_logs ADD COLUMN project_id VARCHAR(36) CHARACTER SET utf8mb4 COLLATE utf8mb4_bin NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN task_id VARCHAR(36) NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN operator_id VARCHAR(36) NOT NULL DEFAULT '';
+CREATE INDEX idx_tasks_project_history ON tasks(project_id, created_at);
+CREATE INDEX idx_audit_project_history ON audit_logs(project_id, created_at);
+CREATE INDEX idx_audit_task_history ON audit_logs(task_id);
diff --git a/backend/internal/database/migrations/postgres/0013_history_scope.sql b/backend/internal/database/migrations/postgres/0013_history_scope.sql
new file mode 100644
index 0000000..5a8aabb
--- /dev/null
+++ b/backend/internal/database/migrations/postgres/0013_history_scope.sql
@@ -0,0 +1,9 @@
+ALTER TABLE tasks ADD COLUMN scope_type TEXT NOT NULL DEFAULT 'unknown';
+ALTER TABLE tasks ADD COLUMN project_id TEXT NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN scope_type TEXT NOT NULL DEFAULT 'unknown';
+ALTER TABLE audit_logs ADD COLUMN project_id TEXT NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN task_id TEXT NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN operator_id TEXT NOT NULL DEFAULT '';
+CREATE INDEX idx_tasks_project_history ON tasks(project_id, created_at);
+CREATE INDEX idx_audit_project_history ON audit_logs(project_id, created_at);
+CREATE INDEX idx_audit_task_history ON audit_logs(task_id);
diff --git a/backend/internal/database/migrations/sqlite/0013_history_scope.sql b/backend/internal/database/migrations/sqlite/0013_history_scope.sql
new file mode 100644
index 0000000..5a8aabb
--- /dev/null
+++ b/backend/internal/database/migrations/sqlite/0013_history_scope.sql
@@ -0,0 +1,9 @@
+ALTER TABLE tasks ADD COLUMN scope_type TEXT NOT NULL DEFAULT 'unknown';
+ALTER TABLE tasks ADD COLUMN project_id TEXT NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN scope_type TEXT NOT NULL DEFAULT 'unknown';
+ALTER TABLE audit_logs ADD COLUMN project_id TEXT NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN task_id TEXT NOT NULL DEFAULT '';
+ALTER TABLE audit_logs ADD COLUMN operator_id TEXT NOT NULL DEFAULT '';
+CREATE INDEX idx_tasks_project_history ON tasks(project_id, created_at);
+CREATE INDEX idx_audit_project_history ON audit_logs(project_id, created_at);
+CREATE INDEX idx_audit_task_history ON audit_logs(task_id);
diff --git a/backend/internal/database/sqlite_task_migration_test.go b/backend/internal/database/sqlite_task_migration_test.go
index 7fccc70..58459bd 100644
--- a/backend/internal/database/sqlite_task_migration_test.go
+++ b/backend/internal/database/sqlite_task_migration_test.go
@@ -50,6 +50,9 @@ func TestSQLiteBusinessUpgradePreservesDependentObjects(t *testing.T) {
 				t.Fatal("行号或生成列发生变化")
 			}
 			var count, actualForeignKeys int
+			if err := db.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM trigger_events").Scan(&count); err != nil || count != 2 {
+				t.Fatalf("范围回填应保留并调用两次历史更新触发器：%d，%v", count, err)
+			}
 			if err := db.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM task_links WHERE task_id = 'task'").Scan(&count); err != nil || count != 1 {
 				t.Fatalf("任务表重建触发了级联删除：%v", err)
 			}
@@ -59,7 +62,7 @@ func TestSQLiteBusinessUpgradePreservesDependentObjects(t *testing.T) {
 			if _, err := db.DB.ExecContext(t.Context(), `INSERT INTO a_task_view VALUES ('task', '升级后视图写入'); INSERT INTO settings (key, value) VALUES ('after', '升级后外部触发器')`); err != nil {
 				t.Fatal(err)
 			}
-			if err := db.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM trigger_events").Scan(&count); err != nil || count != 2 {
+			if err := db.DB.QueryRowContext(t.Context(), "SELECT COUNT(*) FROM trigger_events").Scan(&count); err != nil || count != 4 {
 				t.Fatalf("触发器执行结果错误：%d，%v", count, err)
 			}
 		})
diff --git a/backend/internal/httpapi/auth.go b/backend/internal/httpapi/auth.go
index db35bf8..806c42e 100644
--- a/backend/internal/httpapi/auth.go
+++ b/backend/internal/httpapi/auth.go
@@ -79,7 +79,7 @@ func (s *Server) authLogin(c *gin.Context) {
 	account, userID, passwordHash, err := s.authenticateAccount(c.Request.Context(), request, cfg)
 	if err != nil {
 		s.recordLoginFailure(key)
-		s.recordAuthAudit(c, "登录失败", "failed", "登录凭据校验失败")
+		s.recordAuthAudit(c, "", "登录失败", "failed", "登录凭据校验失败")
 		s.writeError(c, http.StatusUnauthorized, "账号或密码错误", nil)
 		return
 	}
@@ -120,7 +120,7 @@ func (s *Server) authLogin(c *gin.Context) {
 	}
 	s.authMu.Unlock()
 	s.setAuthCookie(c, token, expiresAt)
-	s.recordAuthAudit(c, "登录成功", "success", "用户登录成功")
+	s.recordAuthAudit(c, userID, "登录成功", "success", "用户登录成功")
 	c.JSON(http.StatusOK, gin.H{
 		"authenticated":  true,
 		"account":        account.Username,
@@ -339,12 +339,13 @@ func (s *Server) clearLoginFailures(key string) {
 	s.loginMu.Unlock()
 }
 
-func (s *Server) recordAuthAudit(c *gin.Context, action, status, message string) {
+func (s *Server) recordAuthAudit(c *gin.Context, operatorID, action, status, message string) {
 	if s.audit == nil {
 		return
 	}
 	if err := s.audit.CreateAuditLog(c.Request.Context(), repository.AuditLog{
-		Action: action, ResourceType: "auth", ResourceID: "login", Status: status, Message: message,
+		OperatorID: operatorID,
+		Action:     action, ResourceType: "auth", ResourceID: "login", Status: status, Message: message,
 	}); err != nil && s.logger != nil {
 		s.logger.Warn("保存登录审计日志失败", "error", err)
 	}
diff --git a/backend/internal/httpapi/certificate_restore_api.go b/backend/internal/httpapi/certificate_restore_api.go
index e0bab35..c345f39 100644
--- a/backend/internal/httpapi/certificate_restore_api.go
+++ b/backend/internal/httpapi/certificate_restore_api.go
@@ -23,7 +23,8 @@ func (s *Server) restoreCertificateVersion(c *gin.Context) {
 		}
 		if s.audit != nil {
 			_ = s.audit.CreateAuditLog(c.Request.Context(), repository.AuditLog{
-				Action: "certificate_version_restore", ResourceType: "certificate", ResourceID: c.Param("id"), Status: "failed",
+				OperatorID: s.currentOperatorID(c),
+				Action:     "certificate_version_restore", ResourceType: "certificate", ResourceID: c.Param("id"), Status: "failed",
 				Message: "恢复证书历史版本失败",
 			})
 		}
@@ -32,7 +33,8 @@ func (s *Server) restoreCertificateVersion(c *gin.Context) {
 	}
 	if s.audit != nil {
 		_ = s.audit.CreateAuditLog(c.Request.Context(), repository.AuditLog{
-			Action: "certificate_version_restore", ResourceType: "certificate", ResourceID: c.Param("id"), Status: "success",
+			OperatorID: s.currentOperatorID(c),
+			Action:     "certificate_version_restore", ResourceType: "certificate", ResourceID: c.Param("id"), Status: "success",
 			Message: "已恢复证书历史版本：" + version,
 		})
 	}
diff --git a/backend/internal/httpapi/history_scope_audit_test.go b/backend/internal/httpapi/history_scope_audit_test.go
new file mode 100644
index 0000000..ecd4067
--- /dev/null
+++ b/backend/internal/httpapi/history_scope_audit_test.go
@@ -0,0 +1,84 @@
+package httpapi
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"strings"
+	"testing"
+
+	"git.pcux.cn/xuans/Scert/backend/internal/repository"
+)
+
+func TestHistoryScopeLoginAuditUsesVerifiedAccount(t *testing.T) {
+	server, _, audit, closeDB := newTaskAPITestServer(t, nil)
+	defer closeDB()
+	server.config.Admin.Username = "owner"
+	server.config.Admin.PasswordHash = httpUserPasswordHash(t, "OwnerPass123")
+	otherCookie := httpUserSessionCookie(server, "other-actor", repository.UserRoleAdmin)
+	for _, tc := range []struct {
+		name, password, actor string
+		cookie                *http.Cookie
+		status                int
+	}{
+		{"fresh-login", "OwnerPass123", "primary-super-admin", nil, http.StatusOK},
+		{"different-session", "OwnerPass123", "primary-super-admin", otherCookie, http.StatusOK},
+		{"failed-login", "Incorrect123", "", otherCookie, http.StatusUnauthorized},
+	} {
+		t.Run(tc.name, func(t *testing.T) {
+			request := httptest.NewRequest(http.MethodPost, "/api/v1/auth/login", strings.NewReader(`{"identifier":"owner","password":"`+tc.password+`"}`))
+			request.Header.Set("Content-Type", "application/json")
+			if tc.cookie != nil {
+				request.AddCookie(tc.cookie)
+			}
+			response := httptest.NewRecorder()
+			server.Handler().ServeHTTP(response, request)
+			if response.Code != tc.status {
+				t.Fatalf("登录响应错误：%d，%s", response.Code, response.Body.String())
+			}
+			logs, err := audit.ListAuditLogs(t.Context(), 1)
+			if err != nil || len(logs) != 1 {
+				t.Fatalf("登录审计缺失：%+v，%v", logs, err)
+			}
+			if logs[0].OperatorID != tc.actor || logs[0].ScopeType != repository.ScopeSystem || logs[0].ProjectID != "" {
+				t.Fatalf("登录审计误用旧会话或丢失已验证身份：%+v", logs[0])
+			}
+		})
+	}
+}
+
+func TestHistoryScopeUserAuditSurvivesSessionInvalidation(t *testing.T) {
+	server, _, audit, closeDB := newTaskAPITestServer(t, nil)
+	defer closeDB()
+	cookie := httpUserSessionCookie(server, "self-admin", repository.UserRoleSuperAdmin)
+	response := serveUserRequest(server, cookie, http.MethodPut, "/api/v1/users/self-admin",
+		`{"username":"self-admin","email":"self-admin@example.test","password":"Updated123","role":"super_admin","status":"active"}`)
+	if response.Code != http.StatusOK {
+		t.Fatalf("更新自身账户失败：%d，%s", response.Code, response.Body.String())
+	}
+	logs, err := audit.ListAuditLogs(t.Context(), 1)
+	if err != nil || len(logs) != 1 || logs[0].OperatorID != "self-admin" || logs[0].ScopeType != repository.ScopeSystem {
+		t.Fatalf("会话失效后丢失实际操作者：%+v，%v", logs, err)
+	}
+	after := serveUserRequest(server, cookie, http.MethodGet, "/api/v1/users", "")
+	if after.Code != http.StatusUnauthorized {
+		t.Fatalf("审计身份快照不得恢复失效会话：%d", after.Code)
+	}
+}
+
+func TestHistoryScopePasswordAuditSurvivesSessionInvalidation(t *testing.T) {
+	server, _, audit, closeDB := newTaskAPITestServer(t, nil)
+	defer closeDB()
+	cookie := httpUserSessionCookie(server, "password-user", repository.UserRoleUser)
+	response := performChangePasswordRequest(t, server, cookie,
+		`{"current_password":"FixturePass123","new_password":"Updated123","confirm_password":"Updated123"}`)
+	if response.Code != http.StatusOK {
+		t.Fatalf("修改密码失败：%d，%s", response.Code, response.Body.String())
+	}
+	logs, err := audit.ListAuditLogs(t.Context(), 1)
+	if err != nil || len(logs) != 1 || logs[0].OperatorID != "password-user" || logs[0].ScopeType != repository.ScopeSystem {
+		t.Fatalf("改密后丢失审计操作者：%+v，%v", logs, err)
+	}
+	if after := authSessionRequest(server, cookie); after.Code != http.StatusUnauthorized {
+		t.Fatalf("改密审计不得恢复旧会话：%d", after.Code)
+	}
+}
diff --git a/backend/internal/httpapi/password_api.go b/backend/internal/httpapi/password_api.go
index e4eb56d..bbf8a51 100644
--- a/backend/internal/httpapi/password_api.go
+++ b/backend/internal/httpapi/password_api.go
@@ -137,7 +137,7 @@ func (s *Server) changeDatabaseUserPassword(c *gin.Context, session authSession,
 func (s *Server) finishPasswordChange(c *gin.Context, userID, message string) {
 	s.invalidateUserSessions(userID)
 	s.clearAuthCookie(c)
-	s.recordAuthAudit(c, "修改密码", "success", "当前登录账号修改密码成功")
+	s.recordAuthAudit(c, userID, "修改密码", "success", "当前登录账号修改密码成功")
 	c.JSON(http.StatusOK, gin.H{
 		"authenticated":  false,
 		"requires_login": true,
diff --git a/backend/internal/httpapi/resource_scope.go b/backend/internal/httpapi/resource_scope.go
index b10d98b..d2e62b3 100644
--- a/backend/internal/httpapi/resource_scope.go
+++ b/backend/internal/httpapi/resource_scope.go
@@ -6,6 +6,13 @@ import (
 )
 
 // 归属由服务端会话填写，不能从请求体接受操作者或项目授权声明。
+func (s *Server) currentOperatorID(c *gin.Context) string {
+	if session, ok := s.currentAuthSession(c); ok {
+		return session.UserID
+	}
+	return ""
+}
+
 func (s *Server) newResourceScope(c *gin.Context) domain.ResourceScope {
 	scope := domain.ResourceScope{ProjectID: domain.DefaultProjectID}
 	if session, ok := s.currentAuthSession(c); ok {
diff --git a/backend/internal/httpapi/task_api.go b/backend/internal/httpapi/task_api.go
index 7c9690a..fc039eb 100644
--- a/backend/internal/httpapi/task_api.go
+++ b/backend/internal/httpapi/task_api.go
@@ -25,7 +25,8 @@ func (s *Server) issueDomainAsTask(c *gin.Context) {
 		return
 	}
 	domainID := strings.TrimSpace(c.Param("id"))
-	if _, err := s.repository.GetByID(c.Request.Context(), domainID); err != nil {
+	resource, err := s.repository.GetByID(c.Request.Context(), domainID)
+	if err != nil {
 		if repository.IsNotFound(err) {
 			s.writeError(c, http.StatusNotFound, "域名不存在", err)
 			return
@@ -66,7 +67,9 @@ func (s *Server) issueDomainAsTask(c *gin.Context) {
 	}
 	now := time.Now().UTC()
 	task := repository.Task{
-		ID: domain.NewID(), DomainID: domainID, TaskType: "certificate_issue", Status: "queued", Stage: "queued",
+		HistoryScope: repository.HistoryScope{ScopeType: repository.ScopeProject, ProjectID: resource.ResourceScope.Normalize().ProjectID},
+		OperatorID:   s.currentOperatorID(c),
+		ID:           domain.NewID(), DomainID: domainID, TaskType: "certificate_issue", Status: "queued", Stage: "queued",
 		Message: "等待执行证书申请", IdempotencyKey: idempotencyKey, CreatedAt: now, UpdatedAt: now,
 	}
 	if err := s.tasks.CreateTask(c.Request.Context(), task); err != nil {
@@ -91,6 +94,7 @@ func (s *Server) issueDomainAsTask(c *gin.Context) {
 		_ = s.tasks.FinishAttempt(context.Background(), attempt.ID, "failed", failureMessage, &finished)
 		if s.audit != nil {
 			_ = s.audit.CreateAuditLog(context.Background(), repository.AuditLog{
+				TaskID: task.ID, OperatorID: task.OperatorID,
 				Action: "certificate_issue", ResourceType: "domain", ResourceID: domainID,
 				Status: "error", Message: failureMessage,
 			})
@@ -144,6 +148,7 @@ func (s *Server) issueDomainAsTask(c *gin.Context) {
 			auditStatus = "error"
 		}
 		_ = s.audit.CreateAuditLog(context.Background(), repository.AuditLog{
+			TaskID: task.ID, OperatorID: task.OperatorID,
 			Action: "certificate_issue", ResourceType: "domain", ResourceID: domainID, Status: auditStatus, Message: message,
 		})
 	}
@@ -226,6 +231,7 @@ func (s *Server) cancelTask(c *gin.Context) {
 	item.UpdatedAt = finished
 	if s.audit != nil {
 		_ = s.audit.CreateAuditLog(context.Background(), repository.AuditLog{
+			TaskID: taskID, OperatorID: s.currentOperatorID(c),
 			Action: "task_cancel", ResourceType: "task", ResourceID: taskID, Status: "success", Message: item.Message,
 		})
 	}
diff --git a/backend/internal/httpapi/task_api_test.go b/backend/internal/httpapi/task_api_test.go
index 0cb92e0..2f0a988 100644
--- a/backend/internal/httpapi/task_api_test.go
+++ b/backend/internal/httpapi/task_api_test.go
@@ -47,6 +47,7 @@ func newTaskAPITestServer(t *testing.T, issue func(context.Context, string) (cer
 		IssueCertificate: issue,
 		Tasks:            taskRepo,
 		Audit:            auditRepo,
+		Users:            repository.NewSQLUserRepository(db.DB, cfg.Database.Driver),
 	})
 	return server, taskRepo, auditRepo, func() { _ = db.Close() }
 }
@@ -74,6 +75,13 @@ func TestTaskAPIRecordsSuccessfulIssueAndAudit(t *testing.T) {
 	if err != nil || len(logs) != 1 || logs[0].Status != "success" {
 		t.Fatalf("审计日志记录错误：%+v %v", logs, err)
 	}
+	wantScope := repository.HistoryScope{ScopeType: repository.ScopeProject, ProjectID: domain.DefaultProjectID}
+	if items[0].HistoryScope != wantScope || attempts[0].HistoryScope != wantScope || logs[0].HistoryScope != wantScope {
+		t.Fatalf("请求任务、尝试与审计范围不一致：%+v %+v %+v", items[0], attempts[0], logs[0])
+	}
+	if items[0].OperatorID != "test-admin" || logs[0].OperatorID != "test-admin" || logs[0].TaskID != items[0].ID {
+		t.Fatalf("服务端会话操作者或审计任务关联缺失：%+v %+v", items[0], logs[0])
+	}
 
 	list := httptest.NewRecorder()
 	serveAdminHTTP(server, list, httptest.NewRequest(http.MethodGet, "/api/v1/tasks?limit=10", nil))
@@ -215,7 +223,7 @@ func TestTaskAPICannotCancelManagementTaskWithoutExecutionControl(t *testing.T)
 
 func TestTaskAPICanCancelRunningIssue(t *testing.T) {
 	started := make(chan struct{})
-	server, taskRepo, _, closeDB := newTaskAPITestServer(t, func(ctx context.Context, id string) (certificate.IssueResult, deployment.Report, error) {
+	server, taskRepo, auditRepo, closeDB := newTaskAPITestServer(t, func(ctx context.Context, id string) (certificate.IssueResult, deployment.Report, error) {
 		close(started)
 		<-ctx.Done()
 		return certificate.IssueResult{DomainID: id}, deployment.Report{}, ctx.Err()
@@ -254,6 +262,15 @@ func TestTaskAPICanCancelRunningIssue(t *testing.T) {
 	if err != nil || item.Status != "cancelled" {
 		t.Fatalf("任务取消状态没有持久化：%+v %v", item, err)
 	}
+	logs, err := auditRepo.ListAuditLogs(t.Context(), 10)
+	if err != nil || len(logs) != 2 {
+		t.Fatalf("取消和申请收尾审计缺失：%+v，%v", logs, err)
+	}
+	for _, entry := range logs {
+		if entry.TaskID != item.ID || entry.OperatorID != "test-admin" || entry.HistoryScope != item.HistoryScope {
+			t.Fatalf("取消审计关联错误：%+v", entry)
+		}
+	}
 }
 
 func TestTaskAPIReplaysIdempotentIssue(t *testing.T) {
@@ -362,12 +379,12 @@ func TestAuditLogResponseUsesDashboardFieldNames(t *testing.T) {
 	}
 	var previousID int64
 	for i, item := range payload.Items {
-		for _, field := range []string{"id", "action", "resource_type", "resource_id", "status", "message", "created_at"} {
+		for _, field := range []string{"id", "action", "resource_type", "resource_id", "status", "message", "created_at", "scope_type", "project_id", "task_id", "operator_id"} {
 			if _, ok := item[field]; !ok {
 				t.Fatal(field, response.Body.String())
 			}
 		}
-		if len(item) != 7 {
+		if len(item) != 11 {
 			t.Fatal(response.Body.String())
 		}
 		var id int64
@@ -377,6 +394,7 @@ func TestAuditLogResponseUsesDashboardFieldNames(t *testing.T) {
 		previousID = id
 		for field, expected := range map[string]string{
 			"action": "login", "resource_type": "auth", "resource_id": "admin",
+			"scope_type": "system", "project_id": "", "task_id": "", "operator_id": "",
 			"status": []string{"error", "success"}[i], "message": "login", "created_at": createdAt.Format(time.RFC3339),
 		} {
 			var actual string
diff --git a/backend/internal/httpapi/users_api.go b/backend/internal/httpapi/users_api.go
index 43bef36..fade8bf 100644
--- a/backend/internal/httpapi/users_api.go
+++ b/backend/internal/httpapi/users_api.go
@@ -123,7 +123,7 @@ func (s *Server) createUser(c *gin.Context) {
 		s.writeError(c, userErrorStatus(err), "创建用户失败", err)
 		return
 	}
-	s.recordUserAudit(c, "创建用户", "success", item.ID)
+	s.recordUserAudit(c, s.currentOperatorID(c), "创建用户", "success", item.ID)
 	c.JSON(http.StatusCreated, item)
 }
 
@@ -183,12 +183,14 @@ func (s *Server) updateUser(c *gin.Context) {
 			return
 		}
 	}
+	// 更新自身账户会使原会话失效，审计身份必须在写入前从已验证会话读取。
+	operatorID := s.currentOperatorID(c)
 	if err := s.users.UpdateUser(c.Request.Context(), item); err != nil {
 		s.writeError(c, userErrorStatus(err), "更新用户失败", err)
 		return
 	}
 	s.invalidateUserSessions(id)
-	s.recordUserAudit(c, "更新用户", "success", id)
+	s.recordUserAudit(c, operatorID, "更新用户", "success", id)
 	c.JSON(http.StatusOK, item)
 }
 
@@ -222,6 +224,7 @@ func (s *Server) deleteUser(c *gin.Context) {
 			return
 		}
 	}
+	operatorID := s.currentOperatorID(c)
 	if err := s.users.DeleteUser(c.Request.Context(), id); err != nil {
 		if errors.Is(err, repository.ErrSuperAdminProtected) {
 			s.writeError(c, http.StatusBadRequest, err.Error(), err)
@@ -235,7 +238,7 @@ func (s *Server) deleteUser(c *gin.Context) {
 		return
 	}
 	s.invalidateUserSessions(id)
-	s.recordUserAudit(c, "删除用户", "success", id)
+	s.recordUserAudit(c, operatorID, "删除用户", "success", id)
 	c.Status(http.StatusNoContent)
 }
 
@@ -286,12 +289,13 @@ func userFromRequest(request userRequest, id string) (repository.User, error) {
 	return item, nil
 }
 
-func (s *Server) recordUserAudit(c *gin.Context, action, status, id string) {
+func (s *Server) recordUserAudit(c *gin.Context, operatorID, action, status, id string) {
 	if s.audit == nil {
 		return
 	}
 	if err := s.audit.CreateAuditLog(c.Request.Context(), repository.AuditLog{
-		Action: action, ResourceType: "user", ResourceID: id, Status: status, Message: action,
+		OperatorID: operatorID,
+		Action:     action, ResourceType: "user", ResourceID: id, Status: status, Message: action,
 	}); err != nil && s.logger != nil {
 		s.logger.Warn("保存用户审计日志失败", "error", err)
 	}
diff --git a/backend/internal/repository/audit_reader.go b/backend/internal/repository/audit_reader.go
index 23ed44e..caf28ce 100644
--- a/backend/internal/repository/audit_reader.go
+++ b/backend/internal/repository/audit_reader.go
@@ -18,7 +18,8 @@ func (r *SQLAuditRepository) ListAuditLogs(ctx context.Context, limit int) ([]Au
 	if limit <= 0 || limit > 200 {
 		limit = 50
 	}
-	rows, err := r.db.QueryContext(ctx, r.query(`SELECT id, action, resource_type, resource_id, status, message, created_at FROM audit_logs ORDER BY created_at DESC, id DESC LIMIT `+fmt.Sprintf("%d", limit)))
+	rows, err := r.db.QueryContext(ctx, r.query(`SELECT id, action, resource_type, resource_id, status, message, created_at,
+		scope_type, project_id, task_id, operator_id FROM audit_logs ORDER BY created_at DESC, id DESC LIMIT `+fmt.Sprintf("%d", limit)))
 	if err != nil {
 		return nil, fmt.Errorf("查询审计日志失败：%w", err)
 	}
@@ -26,7 +27,8 @@ func (r *SQLAuditRepository) ListAuditLogs(ctx context.Context, limit int) ([]Au
 	logs := make([]AuditLog, 0)
 	for rows.Next() {
 		var item AuditLog
-		if err := rows.Scan(&item.ID, &item.Action, &item.ResourceType, &item.ResourceID, &item.Status, &item.Message, &item.CreatedAt); err != nil {
+		if err := rows.Scan(&item.ID, &item.Action, &item.ResourceType, &item.ResourceID, &item.Status, &item.Message, &item.CreatedAt,
+			&item.ScopeType, &item.ProjectID, &item.TaskID, &item.OperatorID); err != nil {
 			return nil, fmt.Errorf("读取审计日志失败：%w", err)
 		}
 		item.CreatedAt = item.CreatedAt.UTC()
diff --git a/backend/internal/repository/audit_repository.go b/backend/internal/repository/audit_repository.go
index 731cdcf..3171328 100644
--- a/backend/internal/repository/audit_repository.go
+++ b/backend/internal/repository/audit_repository.go
@@ -10,6 +10,9 @@ import (
 )
 
 type AuditLog struct {
+	HistoryScope
+	TaskID       string    `json:"task_id"`
+	OperatorID   string    `json:"operator_id"`
 	ID           int64     `json:"id"`
 	Action       string    `json:"action"`
 	ResourceType string    `json:"resource_type"`
@@ -44,15 +47,28 @@ func (r *SQLAuditRepository) CreateAuditLog(ctx context.Context, item AuditLog)
 	item.ResourceType = strings.TrimSpace(item.ResourceType)
 	item.ResourceID = strings.TrimSpace(item.ResourceID)
 	item.Status = strings.TrimSpace(item.Status)
+	item.TaskID = strings.TrimSpace(item.TaskID)
+	item.OperatorID = strings.TrimSpace(item.OperatorID)
 	if item.Action == "" || item.ResourceType == "" || item.Status == "" {
 		return errors.New("审计日志必要字段不能为空")
 	}
 	if item.CreatedAt.IsZero() {
 		item.CreatedAt = time.Now().UTC()
 	}
-	_, err := r.db.ExecContext(ctx, r.query(`INSERT INTO audit_logs
-		(action, resource_type, resource_id, status, message, created_at)
-		VALUES (?, ?, ?, ?, ?, ?)`), item.Action, item.ResourceType, item.ResourceID, item.Status, item.Message, item.CreatedAt.UTC())
+	if item.ResourceType == "task" && item.TaskID == "" {
+		item.TaskID = item.ResourceID
+	}
+	scope, err := r.resolveScope(ctx, item)
+	if err != nil {
+		return fmt.Errorf("解析审计范围失败：%w", err)
+	}
+	if !item.HistoryScope.matches(scope) {
+		return errors.New("审计项目与资源范围不匹配")
+	}
+	_, err = r.db.ExecContext(ctx, r.query(`INSERT INTO audit_logs
+		(action, resource_type, resource_id, status, message, created_at, scope_type, project_id, task_id, operator_id)
+		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`), item.Action, item.ResourceType, item.ResourceID, item.Status, item.Message,
+		item.CreatedAt.UTC(), scope.ScopeType, scope.ProjectID, item.TaskID, item.OperatorID)
 	if err != nil {
 		return fmt.Errorf("保存审计日志失败：%w", err)
 	}
diff --git a/backend/internal/repository/history_scope.go b/backend/internal/repository/history_scope.go
new file mode 100644
index 0000000..317ce15
--- /dev/null
+++ b/backend/internal/repository/history_scope.go
@@ -0,0 +1,71 @@
+package repository
+
+import (
+	"context"
+	"database/sql"
+	"errors"
+)
+
+const (
+	ScopeProject         = "project"
+	ScopeSystem          = "system"
+	ScopeUnknown         = "unknown"
+	ManagementResourceID = "management-certificate"
+)
+
+// HistoryScope 保存事件发生时的范围，资源或项目删除后仍保留；不是项目授权凭证。
+// 未知历史归属保持为空，不自动降级为系统范围，也不归入默认项目。
+type HistoryScope struct {
+	ScopeType string `json:"scope_type"`
+	ProjectID string `json:"project_id"`
+}
+
+func (s HistoryScope) matches(actual HistoryScope) bool {
+	return (s.ScopeType == "" || s.ScopeType == actual.ScopeType) && (s.ProjectID == "" || s.ProjectID == actual.ProjectID)
+}
+
+func (r *SQLAuditRepository) resolveScope(ctx context.Context, item AuditLog) (HistoryScope, error) {
+	if item.TaskID != "" {
+		task, err := NewSQLTaskRepository(r.db, r.driver).GetTask(ctx, item.TaskID)
+		if err != nil {
+			return HistoryScope{}, err
+		}
+		valid := item.ResourceType == "task" && item.ResourceID == task.ID
+		if item.ResourceType == "domain" || item.ResourceType == "certificate" {
+			valid = task.ScopeType != ScopeSystem && item.ResourceID == task.DomainID
+		}
+		if item.ResourceType == "management_certificate" {
+			valid = task.ScopeType == ScopeSystem && item.ResourceID == ManagementResourceID
+		}
+		if !valid {
+			return HistoryScope{}, errors.New("审计任务与资源不匹配")
+		}
+		return task.HistoryScope, nil
+	}
+	var table string
+	switch item.ResourceType {
+	case "auth", "user", "super_admin":
+		return HistoryScope{ScopeType: ScopeSystem}, nil
+	case "management_certificate":
+		if item.ResourceID == ManagementResourceID {
+			return HistoryScope{ScopeType: ScopeSystem}, nil
+		}
+	case "domain", "certificate":
+		table = "domains"
+	case "server":
+		table = "servers"
+	}
+	result := HistoryScope{ScopeType: ScopeUnknown}
+	if table != "" {
+		err := r.db.QueryRowContext(ctx, r.query("SELECT project_id FROM "+table+" WHERE id = ?"), item.ResourceID).Scan(&result.ProjectID)
+		if errors.Is(err, sql.ErrNoRows) {
+			// 对不存在资源的失败操作也需要审计，但不能伪造其项目。
+			return result, nil
+		}
+		if err != nil {
+			return HistoryScope{}, err
+		}
+		result.ScopeType = ScopeProject
+	}
+	return result, nil
+}
diff --git a/backend/internal/repository/history_scope_test.go b/backend/internal/repository/history_scope_test.go
new file mode 100644
index 0000000..d53a4e4
--- /dev/null
+++ b/backend/internal/repository/history_scope_test.go
@@ -0,0 +1,246 @@
+package repository
+
+import (
+	"context"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"git.pcux.cn/xuans/Scert/backend/internal/config"
+	"git.pcux.cn/xuans/Scert/backend/internal/database"
+	"git.pcux.cn/xuans/Scert/backend/internal/domain"
+	"git.pcux.cn/xuans/Scert/backend/internal/testsupport/mysqltest"
+)
+
+func TestHistoryScopeSQLite(t *testing.T) {
+	cfg := config.Default(t.TempDir()).Database
+	cfg.DSN = filepath.Join(t.TempDir(), "history.db")
+	checkHistoryScope(t, cfg)
+}
+
+func TestHistoryScopeMySQLReal(t *testing.T) {
+	server := mysqltest.New(t)
+	checkHistoryScope(t, server.Database(t))
+}
+
+func checkHistoryScope(t *testing.T, cfg config.DatabaseConfig) {
+	t.Helper()
+	ctx := t.Context()
+	db, err := database.Open(ctx, cfg)
+	if err != nil {
+		t.Fatal(err)
+	}
+	t.Cleanup(func() { _ = db.Close() })
+	if err := database.Migrate(ctx, db.DB, cfg.Driver); err != nil {
+		t.Fatal(err)
+	}
+	projects := NewSQLProjectRepository(db.DB, cfg.Driver)
+	domains := NewSQLDomainRepository(db.DB, cfg.Driver)
+	tasks := NewSQLTaskRepository(db.DB, cfg.Driver)
+	audit := NewSQLAuditRepository(db.DB, cfg.Driver)
+	for _, id := range []string{"history-a", "history-b"} {
+		if err := projects.CreateProject(ctx, domain.Project{ID: id, Name: id}); err != nil {
+			t.Fatal(err)
+		}
+	}
+	resource, err := domain.NewDomain("history.example.test", domain.CertificateSingle, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	resource.ProjectID = "history-a"
+	if err := domains.Create(ctx, resource); err != nil {
+		t.Fatal(err)
+	}
+	expected := HistoryScope{ScopeType: ScopeProject, ProjectID: "history-a"}
+	task := Task{ID: "history-task", DomainID: resource.ID, TaskType: "certificate_issue", Status: "running", Stage: "issue", OperatorID: "actor", IdempotencyKey: "history-key"}
+	if err := tasks.CreateTask(ctx, task); err != nil {
+		t.Fatal(err)
+	}
+	for name, read := range map[string]func() (Task, error){
+		"get":         func() (Task, error) { return tasks.GetTask(ctx, task.ID) },
+		"active":      func() (Task, error) { return tasks.FindActiveTaskByDomain(ctx, resource.ID, task.TaskType) },
+		"idempotency": func() (Task, error) { return tasks.FindTaskByIdempotencyKey(ctx, resource.ID, task.IdempotencyKey) },
+	} {
+		t.Run(name, func(t *testing.T) {
+			stored, err := read()
+			if err != nil || stored.HistoryScope != expected || stored.OperatorID != "actor" {
+				t.Fatalf("任务范围读取错误：%+v，%v", stored, err)
+			}
+		})
+	}
+	for _, invalid := range []Task{
+		{ID: "missing", DomainID: "missing", TaskType: "certificate_issue"},
+		{ID: "forged-project", DomainID: resource.ID, TaskType: "certificate_issue", HistoryScope: HistoryScope{ProjectID: "history-b"}},
+		{ID: "forged-system", DomainID: resource.ID, TaskType: "certificate_issue", HistoryScope: HistoryScope{ScopeType: ScopeSystem}},
+		{ID: "forged-unknown", DomainID: resource.ID, TaskType: "certificate_issue", HistoryScope: HistoryScope{ScopeType: ScopeUnknown}},
+		{ID: "false-management", DomainID: resource.ID, TaskType: "management_renewal"},
+		{ID: "false-resource", DomainID: ManagementResourceID, TaskType: "certificate_issue"},
+		{ID: "system-project", DomainID: ManagementResourceID, TaskType: "management_renewal", HistoryScope: expected},
+	} {
+		t.Run(invalid.ID, func(t *testing.T) {
+			invalid.Status, invalid.Stage = "queued", "queued"
+			if err := tasks.CreateTask(ctx, invalid); err == nil {
+				t.Fatal("无效任务范围未拒绝")
+			}
+		})
+	}
+	attempt := TaskAttempt{ID: "history-attempt", TaskID: task.ID, AttemptNumber: 1, Stage: "issue", Status: "running"}
+	if err := tasks.CreateAttempt(ctx, attempt); err != nil {
+		t.Fatal(err)
+	}
+	for _, invalid := range []TaskAttempt{
+		{ID: "missing-parent", TaskID: "missing"},
+		{ID: "wrong-project", TaskID: task.ID, HistoryScope: HistoryScope{ProjectID: "history-b"}},
+		{ID: "wrong-system", TaskID: task.ID, HistoryScope: HistoryScope{ScopeType: ScopeSystem}},
+	} {
+		t.Run(invalid.ID, func(t *testing.T) {
+			invalid.AttemptNumber, invalid.Stage, invalid.Status = 2, "issue", "running"
+			if err := tasks.CreateAttempt(ctx, invalid); err == nil {
+				t.Fatal("无效任务尝试关联未拒绝")
+			}
+		})
+	}
+	management := Task{ID: "management", DomainID: ManagementResourceID, TaskType: "management_renewal", Status: "running", Stage: "issue"}
+	if err := tasks.CreateTask(ctx, management); err != nil {
+		t.Fatal(err)
+	}
+	if stored, err := tasks.GetTask(ctx, management.ID); err != nil || stored.HistoryScope != (HistoryScope{ScopeType: ScopeSystem}) {
+		t.Fatalf("系统任务范围错误：%+v，%v", stored, err)
+	}
+	if err := tasks.CreateAttempt(ctx, TaskAttempt{ID: "management-attempt", TaskID: management.ID, AttemptNumber: 1, Stage: "issue", Status: "running"}); err != nil {
+		t.Fatal(err)
+	}
+	if attempts, err := tasks.ListAttempts(ctx, management.ID); err != nil || len(attempts) != 1 || attempts[0].HistoryScope != (HistoryScope{ScopeType: ScopeSystem}) {
+		t.Fatalf("系统尝试范围错误：%+v，%v", attempts, err)
+	}
+	for _, entry := range []AuditLog{
+		{Action: "direct", ResourceType: "domain", ResourceID: resource.ID},
+		{Action: "linked", ResourceType: "domain", ResourceID: resource.ID, TaskID: task.ID, OperatorID: "actor"},
+		{Action: "task", ResourceType: "task", ResourceID: task.ID},
+		{Action: "system", ResourceType: "management_certificate", ResourceID: ManagementResourceID, TaskID: management.ID},
+		{Action: "auth", ResourceType: "auth", ResourceID: "login"},
+		{Action: "missing", ResourceType: "domain", ResourceID: "deleted"},
+	} {
+		entry.Status = "success"
+		if err := audit.CreateAuditLog(ctx, entry); err != nil {
+			t.Fatal(entry.Action, err)
+		}
+	}
+	for _, entry := range []AuditLog{
+		{Action: "forged-project", ResourceType: "domain", ResourceID: resource.ID, HistoryScope: HistoryScope{ProjectID: "history-b"}},
+		{Action: "wrong-resource", ResourceType: "domain", ResourceID: "different", TaskID: task.ID},
+		{Action: "missing-task", ResourceType: "domain", ResourceID: resource.ID, TaskID: "missing"},
+		{Action: "wrong-system", ResourceType: "domain", ResourceID: resource.ID, TaskID: management.ID},
+		{Action: "wrong-task", ResourceType: "task", ResourceID: task.ID, TaskID: management.ID},
+		{Action: "false-system", ResourceType: "management_certificate", ResourceID: ManagementResourceID, TaskID: task.ID},
+	} {
+		t.Run(entry.Action, func(t *testing.T) {
+			entry.Status = "success"
+			if err := audit.CreateAuditLog(ctx, entry); err == nil {
+				t.Fatal("无效审计关联未拒绝")
+			}
+		})
+	}
+	finished := time.Now().UTC()
+	if err := tasks.CancelTask(ctx, task.ID, "测试取消", &finished); err != nil {
+		t.Fatal(err)
+	}
+	if err := domains.Delete(ctx, resource.ID); err != nil {
+		t.Fatal(err)
+	}
+	if err := projects.DeleteProject(ctx, "history-a"); err != nil {
+		t.Fatal(err)
+	}
+	// 资源和项目删除不删除任务，也不能让收尾审计丢失原项目。
+	if err := audit.CreateAuditLog(ctx, AuditLog{Action: "after-delete", ResourceType: "domain", ResourceID: resource.ID, TaskID: task.ID, Status: "cancelled"}); err != nil {
+		t.Fatal(err)
+	}
+	items, err := tasks.ListTasks(ctx, resource.ID, 10)
+	if err != nil || len(items) != 1 || items[0].HistoryScope != expected || items[0].Status != "cancelled" {
+		t.Fatalf("历史任务丢失：%+v，%v", items, err)
+	}
+	attempts, err := tasks.ListAttempts(ctx, task.ID)
+	if err != nil || len(attempts) != 1 || attempts[0].HistoryScope != expected || attempts[0].Status != "cancelled" {
+		t.Fatalf("尝试未继承历史范围：%+v，%v", attempts, err)
+	}
+	logs, err := audit.ListAuditLogs(ctx, 50)
+	if err != nil || len(logs) != 7 {
+		t.Fatalf("审计数量错误：%d，%v", len(logs), err)
+	}
+	for _, entry := range logs {
+		want := expected
+		if entry.Action == "system" || entry.Action == "auth" {
+			want = HistoryScope{ScopeType: ScopeSystem}
+		}
+		if entry.Action == "missing" {
+			want = HistoryScope{ScopeType: ScopeUnknown}
+		}
+		if entry.HistoryScope != want {
+			t.Fatalf("审计快照错误：%+v", entry)
+		}
+		if entry.Action == "linked" && (entry.TaskID != task.ID || entry.OperatorID != "actor") {
+			t.Fatalf("审计任务或操作者丢失：%+v", entry)
+		}
+	}
+	cancelled, cancel := context.WithCancel(ctx)
+	cancel()
+	if err := tasks.CreateTask(cancelled, management); err == nil {
+		t.Fatal("已取消上下文未生效")
+	}
+	checkHistoryAttemptBoundaries(t, domains, tasks)
+}
+
+func checkHistoryAttemptBoundaries(t *testing.T, domains *SQLDomainRepository, tasks *SQLTaskRepository) {
+	t.Helper()
+	for _, name := range []string{"deleted-resource", "changed-project", "unknown-parent", "orphan-attempt"} {
+		t.Run(name, func(t *testing.T) {
+			ctx := t.Context()
+			resource, err := domain.NewDomain(name+".example.test", domain.CertificateSingle, nil)
+			if err != nil {
+				t.Fatal(err)
+			}
+			resource.ProjectID = "history-b"
+			if err := domains.Create(ctx, resource); err != nil {
+				t.Fatal(err)
+			}
+			task := Task{ID: name, DomainID: resource.ID, TaskType: "certificate_issue", Status: "running", Stage: "issue"}
+			if err := tasks.CreateTask(ctx, task); err != nil {
+				t.Fatal(err)
+			}
+			attempt := TaskAttempt{ID: name, TaskID: task.ID, AttemptNumber: 1, Status: "running", Stage: "issue"}
+			if err := tasks.CreateAttempt(ctx, attempt); err != nil {
+				t.Fatal(err)
+			}
+			switch name {
+			case "deleted-resource":
+				err = domains.Delete(ctx, resource.ID)
+			case "changed-project":
+				_, err = tasks.db.ExecContext(ctx, tasks.query("UPDATE domains SET project_id = ? WHERE id = ?"), "default", resource.ID)
+			case "unknown-parent":
+				// 模拟保留下来的未知历史任务，不通过新建接口伪造范围。
+				_, err = tasks.db.ExecContext(ctx, tasks.query("UPDATE tasks SET scope_type = 'unknown', project_id = '' WHERE id = ?"), task.ID)
+			case "orphan-attempt":
+				_, err = tasks.db.ExecContext(ctx, tasks.query("DELETE FROM tasks WHERE id = ?"), task.ID)
+			}
+			if err != nil {
+				t.Fatal(err)
+			}
+			attempt.ID += "-retry"
+			attempt.AttemptNumber = 2
+			if err := tasks.CreateAttempt(ctx, attempt); err == nil {
+				t.Fatal("资源或历史范围失效后仍允许新增尝试")
+			}
+			stored, err := tasks.ListAttempts(ctx, task.ID)
+			if err != nil || len(stored) != 1 || stored[0].ID != name {
+				t.Fatalf("历史尝试丢失或新增拒绝后残留：%+v，%v", stored, err)
+			}
+			want := HistoryScope{ScopeType: ScopeProject, ProjectID: "history-b"}
+			if name == "unknown-parent" || name == "orphan-attempt" {
+				want = HistoryScope{ScopeType: ScopeUnknown}
+			}
+			if stored[0].HistoryScope != want {
+				t.Fatalf("历史尝试范围被当前资源覆盖：%+v", stored[0])
+			}
+		})
+	}
+}
diff --git a/backend/internal/repository/task_repository.go b/backend/internal/repository/task_repository.go
index 7b51a82..d829d12 100644
--- a/backend/internal/repository/task_repository.go
+++ b/backend/internal/repository/task_repository.go
@@ -11,6 +11,7 @@ import (
 
 // Task 表示一项可持久化的证书或部署任务。
 type Task struct {
+	HistoryScope
 	ID                   string     `json:"id"`
 	DomainID             string     `json:"domain_id"`
 	TaskType             string     `json:"task_type"`
@@ -28,6 +29,7 @@ type Task struct {
 
 // TaskAttempt 表示任务的一次执行尝试。
 type TaskAttempt struct {
+	HistoryScope
 	ID            string     `json:"id"`
 	TaskID        string     `json:"task_id"`
 	AttemptNumber int        `json:"attempt_number"`
@@ -82,14 +84,35 @@ func (r *SQLTaskRepository) CreateTask(ctx context.Context, item Task) error {
 	if updated.IsZero() {
 		updated = now
 	}
-	_, err := r.db.ExecContext(ctx, r.query(`INSERT INTO tasks
-		(id, domain_id, task_type, status, stage, message, operator_id, certificate_version_id, idempotency_key, started_at, finished_at, created_at, updated_at)
-		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`),
+	args := []any{
 		item.ID, item.DomainID, item.TaskType, item.Status, item.Stage, item.Message, item.OperatorID,
-		item.CertificateVersionID, item.IdempotencyKey, nullableTime(item.StartedAt), nullableTime(item.FinishedAt), now, updated)
+		item.CertificateVersionID, item.IdempotencyKey, nullableTime(item.StartedAt), nullableTime(item.FinishedAt), now, updated,
+	}
+	query := `INSERT INTO tasks
+		(id, domain_id, task_type, status, stage, message, operator_id, certificate_version_id, idempotency_key, started_at, finished_at, created_at, updated_at, scope_type, project_id) `
+	if item.TaskType == "management_renewal" {
+		if item.DomainID != ManagementResourceID || !item.HistoryScope.matches(HistoryScope{ScopeType: ScopeSystem}) {
+			return errors.New("管理证书任务范围无效")
+		}
+		query += `VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 'system', '')`
+	} else {
+		if item.DomainID == ManagementResourceID || (item.ScopeType != "" && item.ScopeType != ScopeProject) {
+			return errors.New("业务任务必须归属于实际域名项目")
+		}
+		// 一条语句读取资源归属并写入快照，不能先检查再插入悬空任务。
+		query += `SELECT ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, 'project', d.project_id
+			FROM domains d JOIN projects p ON p.id = d.project_id WHERE d.id = ? AND (? = '' OR d.project_id = ?)`
+		args = append(args, item.DomainID, item.ProjectID, item.ProjectID)
+	}
+	result, err := r.db.ExecContext(ctx, r.query(query), args...)
 	if err != nil {
 		return fmt.Errorf("创建任务失败：%w", err)
 	}
+	if count, err := result.RowsAffected(); err != nil {
+		return fmt.Errorf("读取任务创建结果失败：%w", err)
+	} else if count != 1 {
+		return errors.New("任务资源不存在或项目不匹配")
+	}
 	return nil
 }
 
@@ -297,13 +320,23 @@ func (r *SQLTaskRepository) CreateAttempt(ctx context.Context, item TaskAttempt)
 	if item.CreatedAt.IsZero() {
 		item.CreatedAt = time.Now().UTC()
 	}
-	_, err := r.db.ExecContext(ctx, r.query(`INSERT INTO task_attempts
+	result, err := r.db.ExecContext(ctx, r.query(`INSERT INTO task_attempts
 		(id, task_id, attempt_number, stage, status, message, started_at, finished_at, created_at)
-		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`), item.ID, item.TaskID, item.AttemptNumber, item.Stage, item.Status, item.Message,
-		nullableTime(item.StartedAt), nullableTime(item.FinishedAt), item.CreatedAt.UTC())
+		SELECT ?, id, ?, ?, ?, ?, ?, ?, ? FROM tasks t WHERE id = ?
+		AND (? = '' OR scope_type = ?) AND (? = '' OR project_id = ?)
+		AND ((t.scope_type = 'system' AND t.task_type = 'management_renewal' AND t.domain_id = 'management-certificate')
+		OR (t.scope_type = 'project' AND EXISTS (SELECT 1 FROM domains d JOIN projects p ON p.id = d.project_id
+			WHERE d.id = t.domain_id AND d.project_id = t.project_id)))`), item.ID, item.AttemptNumber, item.Stage, item.Status, item.Message,
+		nullableTime(item.StartedAt), nullableTime(item.FinishedAt), item.CreatedAt.UTC(), item.TaskID,
+		item.ScopeType, item.ScopeType, item.ProjectID, item.ProjectID)
 	if err != nil {
 		return fmt.Errorf("创建任务尝试失败：%w", err)
 	}
+	if count, err := result.RowsAffected(); err != nil {
+		return fmt.Errorf("读取任务尝试创建结果失败：%w", err)
+	} else if count != 1 {
+		return errors.New("任务尝试的父任务不存在或范围不匹配")
+	}
 	return nil
 }
 
@@ -345,7 +378,9 @@ func (r *SQLTaskRepository) ListAttempts(ctx context.Context, taskID string) ([]
 	if taskID == "" {
 		return nil, errors.New("任务 ID 不能为空")
 	}
-	rows, err := r.db.QueryContext(ctx, r.query(`SELECT id, task_id, attempt_number, stage, status, message, started_at, finished_at, created_at FROM task_attempts WHERE task_id = ? ORDER BY attempt_number`), taskID)
+	rows, err := r.db.QueryContext(ctx, r.query(`SELECT a.id, a.task_id, a.attempt_number, a.stage, a.status, a.message,
+		a.started_at, a.finished_at, a.created_at, COALESCE(t.scope_type, 'unknown'), COALESCE(t.project_id, '')
+		FROM task_attempts a LEFT JOIN tasks t ON t.id = a.task_id WHERE a.task_id = ? ORDER BY a.attempt_number`), taskID)
 	if err != nil {
 		return nil, fmt.Errorf("查询任务尝试失败：%w", err)
 	}
@@ -364,12 +399,12 @@ func (r *SQLTaskRepository) ListAttempts(ctx context.Context, taskID string) ([]
 	return result, nil
 }
 
-const taskSelect = `SELECT id, domain_id, task_type, status, stage, message, operator_id, certificate_version_id, idempotency_key, started_at, finished_at, created_at, updated_at FROM tasks`
+const taskSelect = `SELECT id, domain_id, task_type, status, stage, message, operator_id, certificate_version_id, idempotency_key, started_at, finished_at, created_at, updated_at, scope_type, project_id FROM tasks`
 
 func scanTask(row rowScanner) (Task, error) {
 	var item Task
 	var startedAt, finishedAt sql.NullTime
-	if err := row.Scan(&item.ID, &item.DomainID, &item.TaskType, &item.Status, &item.Stage, &item.Message, &item.OperatorID, &item.CertificateVersionID, &item.IdempotencyKey, &startedAt, &finishedAt, &item.CreatedAt, &item.UpdatedAt); err != nil {
+	if err := row.Scan(&item.ID, &item.DomainID, &item.TaskType, &item.Status, &item.Stage, &item.Message, &item.OperatorID, &item.CertificateVersionID, &item.IdempotencyKey, &startedAt, &finishedAt, &item.CreatedAt, &item.UpdatedAt, &item.ScopeType, &item.ProjectID); err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return Task{}, sql.ErrNoRows
 		}
@@ -383,7 +418,7 @@ func scanTask(row rowScanner) (Task, error) {
 func scanAttempt(row rowScanner) (TaskAttempt, error) {
 	var item TaskAttempt
 	var startedAt, finishedAt sql.NullTime
-	if err := row.Scan(&item.ID, &item.TaskID, &item.AttemptNumber, &item.Stage, &item.Status, &item.Message, &startedAt, &finishedAt, &item.CreatedAt); err != nil {
+	if err := row.Scan(&item.ID, &item.TaskID, &item.AttemptNumber, &item.Stage, &item.Status, &item.Message, &startedAt, &finishedAt, &item.CreatedAt, &item.ScopeType, &item.ProjectID); err != nil {
 		if errors.Is(err, sql.ErrNoRows) {
 			return TaskAttempt{}, sql.ErrNoRows
 		}
diff --git a/backend/internal/repository/task_repository_test.go b/backend/internal/repository/task_repository_test.go
index 7e74f17..7c2debf 100644
--- a/backend/internal/repository/task_repository_test.go
+++ b/backend/internal/repository/task_repository_test.go
@@ -24,6 +24,13 @@ func newTaskRepositoryTest(t *testing.T) (*SQLTaskRepository, *sql.DB) {
 		db.Close()
 		t.Fatalf("迁移测试数据库失败：%v", err)
 	}
+	for _, id := range []string{"domain-1", "domain-2", "domain-3"} {
+		if _, err := db.DB.ExecContext(t.Context(), `INSERT INTO domains (id, name, certificate_type, sans_json, status)
+			VALUES (?, ?, 'single', '[]', 'pending')`, id, id+".example.test"); err != nil {
+			db.Close()
+			t.Fatal(err)
+		}
+	}
 	return NewSQLTaskRepository(db.DB), db.DB
 }
 
diff --git a/doc/Scert开发任务清单.md b/doc/Scert开发任务清单.md
index 5546e33..88b9ba2 100644
--- a/doc/Scert开发任务清单.md
+++ b/doc/Scert开发任务清单.md
@@ -1,5 +1,7 @@
 # Scert 开发任务清单
 
+> 当前批次（模式 13）：任务／审计范围快照、历史保留与回填、实际任务关联和操作者来源已实现；新增尝试拒绝缺失资源、项目变更和未知父任务。详细状态与测试以《Scert整改任务执行清单》首节和支持矩阵第二十节为准。其他资源、成员授权和生产验收继续实施，P0-05/P0-06/P0-07 保持 `[~]`，全部 44 项不缩减。下方各段保留历史证据，不表示最新状态。
+
 > 最新执行状态：`7284958` 已交付域名／服务器归属、绑定约束与三库模式 11；`92c844f` 新增模式 12 修复 SQLite 替换目标行绕过引用保护，完整后端、三次竞态、MySQL 双版本及 Windows 独立程序回归均已通过。下方“归属仍未实现”只描述项目根实体历史批次。任务、审计等剩余资源与项目成员权限仍待接入，P0-06/P0-07 继续 `[~]`；全部 44 项范围不变。精确状态见《Scert整改任务执行清单》，证据及条件跳过见支持矩阵第十九节。
 
 > 2026 年 9 月 28 日当前进度：P0-06 项目根实体子项 `[x]`，已新增三库第 10 号迁移、默认项目、项目模型和仓储；SQLite、MySQL 5.7/8.0、竞态与后端全量测试，以及独立 Windows 程序项目备份恢复通过。资源归属字段、回填、引用保护及项目授权仍未实现，P0-06/P0-07 总项保持 `[~]`。新证据及命令见支持矩阵第十八节；旧模式 1～9 的历史证据不自动升级为模式 10 的全部数据库验收。
diff --git a/doc/Scert整改任务执行清单.md b/doc/Scert整改任务执行清单.md
index d48b4cd..4bdbde3 100644
--- a/doc/Scert整改任务执行清单.md
+++ b/doc/Scert整改任务执行清单.md
@@ -1,5 +1,20 @@
 # Scert 整改任务执行清单
 
+## 2026 年 9 月 28 日：任务／审计范围快照（本批实现与回归完成，等待复审）
+
+修改前检查点 `5237e8d` 已推送。当前批次接续模式 12，不改写旧迁移，不删除历史任务，不给已删除资源伪造默认项目，不伪造操作者。
+
+- [x] 已实现三库模式 13 及历史回填；任务、审计保存范围快照，管理证书使用明确系统范围，未知历史保留未知。
+- [x] 已实现业务任务从实际域名项目创建、尝试关联校验及历史读取；HTTP 操作者取自服务端会话，工作流审计关联实际任务。
+- [x] 当前专项重测通过：`HistoryScope|TaskAPI|AuditLogResponse|SQLiteBusinessUpgradePreservesDependentObjects`，覆盖仓储、数据库、接口三包；未配置外部 MySQL 的条件用例不算实库通过。
+- [x] 补充资源删除／项目变更后新尝试拒绝、历史孤儿读取、HTTP 与工作流任务和身份关联断言；正常管理续期必须有开始和收尾审计，故障注入场景只校验实际可写入记录，不强行要求被拒绝的开始审计存在。
+- [x] 正式回归复现登录初版身份漏记／错记及自身账户更新后身份丢失；修复为本次已验证身份或写入前身份快照，登录失败不冒用旧 Cookie。改密审计保留实际身份，后续请求仍拒绝旧会话。
+- [x] MySQL 5.7／8.0 专项各 135 个叶子通过；完整后端 1514 个叶子通过、49 项条件跳过；三次竞态共 258 个叶子通过、6 项条件跳过；最新 Windows 程序两条备份恢复路径、静态检查和模块校验通过。日志及统计边界见支持矩阵第二十节。
+- [x] 同步总清单、执行清单、模型与接口字段、基础规格、开发清单、审查记录、支持矩阵及运维边界；本节与源码同批提交。
+- [ ] 剩余资源关联、项目成员授权和撤权重判、跨项目越权验证、PostgreSQL 当前实库、Linux 原生与生产门禁。
+
+范围快照没有项目外键，不用于授权，也不保证任意直接 SQL 写入的正确性。回填会正常执行既有更新触发器；若触发器拒绝，迁移失败，不绕过触发器。P0-05、P0-06、P0-07 仍为 `[~]`。
+
 ## 2026 年 9 月 28 日：资源归属与替换约束复核
 
 ### 已提交的第 11 号迁移（源码 `7284958`）
diff --git a/doc/Scert整改合并优化清单.md b/doc/Scert整改合并优化清单.md
index f055835..afcf139 100644
--- a/doc/Scert整改合并优化清单.md
+++ b/doc/Scert整改合并优化清单.md
@@ -1,5 +1,16 @@
 # Scert 整改、合并与优化清单
 
+## 当前进度（2026 年 9 月 28 日，任务／审计关联批次）
+
+- [x] 已提交：域名、服务器项目归属及同项目绑定约束（模式 11）；SQLite 替换操作引用保护（模式 12）。已验证范围见执行清单和支持矩阵第十九节。
+- [x] P0-06 本批子项：模式 13、任务／审计项目／系统／未知范围快照、任务与操作者关联、历史保留均已实现并通过本批回归，等待复审。登录错记身份及会话失效后漏记审计也已复现修复。
+- [x] 完整后端 1514 个叶子通过，0 失败、49 项条件跳过；三次竞态共 258 个叶子通过；MySQL 双版本专项各 135 个叶子通过且无跳过（包含 SQLite 用例）；独立 Windows 产品程序两条历史升级／备份恢复路径通过。精确命令和限制见支持矩阵第二十节。
+- [ ] 剩余资源项目关联、项目成员权限、跨项目 Web/API 越权验证及生产部署验收仍未完成。
+
+P0-05、P0-06、P0-07 总项均保持 `[~]`；本批字段与范围校验不等于项目授权完成。原始 44 项及其验收标准不缩减。最新细项见《Scert整改任务执行清单.md》首节；以下旧批次进度只作历史记录，不代表当前实现。
+
+### 历史进度（按批次保留）
+
 > 当前进度（2026 年 9 月 28 日）：源码 `7284958` 已完成域名、服务器的四项归属字段、三库第 11 号迁移及同项目部署绑定约束；不是只有项目根实体。下方项目根实体段落属于上一批历史记录。复核进一步复现 SQLite 替换冲突可绕过引用保护，已由 `92c844f` 新增第 12 号迁移修复并通过本批回归，不能只修改旧迁移使已升级库漏修。最新状态见执行清单与支持矩阵第十九节。任务、审计等剩余资源关联、成员权限及生产验收未完成，P0-06/P0-07 均保持 `[~]`，全部 44 项范围不变。
 
 > 本批最终验证补充：项目根实体已通过 SQLite 专项、MySQL 5.7/8.0 实库、3 次竞态检测及完整后端回归；默认和普通项目也已进入独立 Windows 程序的备份恢复验证。下方“待汇总”为启动阶段快照，最新证据以执行清单的“项目根实体最终验证结果”及支持矩阵第十八节为准。项目资源归属、关联约束和权限隔离仍未实现，P0-06/P0-07 保持 `[~]`。
diff --git a/doc/全面审查测试与优化记录.md b/doc/全面审查测试与优化记录.md
index be56bdf..fdadfd1 100644
--- a/doc/全面审查测试与优化记录.md
+++ b/doc/全面审查测试与优化记录.md
@@ -1,5 +1,7 @@
 # 全面审查、测试与优化记录
 
+> 当前批次：模式 13 任务／审计关联及身份来源复核。审计新增身份初版存在新登录漏记、携带旧 Cookie 时错记、更新自身账户后会话失效导致漏记的问题，已用正式回归复现并修复；不缓存权限，不恢复失效会话。首轮测试夹具问题与过严断言也分别保留原日志。本批最终证据及限制见支持矩阵第二十节，不能复用下方模式 12 的数字替代本批验证。
+
 > 最新复核：资源归属实现已提交为 `7284958`，上一批最终日志重新统计为后端 1432 个叶子通过、47 项条件跳过。本轮正式用例复现 SQLite 在关闭递归触发器时的 20 个替换绕过失败，新增第 12 号迁移修复，包含主键／隐藏行号及项目替换。失败证据保留于 `artifacts/resource-replacement-20260928/before.jsonl`，回归、干净构建和数据库专项最终以支持矩阵第十九节为准。下方根实体批次为历史记录；不宣称项目授权或生产验收完成。
 
 > 2026 年 9 月 28 日最新批次：新增项目根实体、三库第 10 号迁移及仓储。最终后端 1409 个叶子通过、含父项 1535 条、0 失败、46 项条件跳过；54 个项目/迁移叶子用例连续 3 次竞态检测通过；MySQL 5.7.44/8.0.45 各 8 个叶子用例实库通过。独立 Windows 产品程序完成旧库升级及含普通项目的数据备份恢复。MySQL 8.0 首轮故障注入受触发器权限限制，已改用隔离管理连接注入并重测通过，没有降低安全配置或提高产品账号权限。证据见支持矩阵第十八节；项目资源字段和权限隔离仍未实现，生产未放行。
diff --git a/doc/基础整改任务规格.md b/doc/基础整改任务规格.md
index 1d7e599..a96ae42 100644
--- a/doc/基础整改任务规格.md
+++ b/doc/基础整改任务规格.md
@@ -1,5 +1,7 @@
 # 基础整改任务规格
 
+> 本批进度（模式 13）：P0-06 已增加任务／审计的项目、系统和未知范围快照及任务关联；HTTP 身份、后台任务、历史删除资源与孤儿尝试按实际来源处理。范围保存与当前资源校验不是成员授权，P0-05/P0-06/P0-07 均保持 `[~]`。本批证据见执行清单首节及支持矩阵第二十节；下方模式 10～12 说明为历史批次，不覆盖本批结果。
+
 > 当前进度：域名／服务器归属、三库第 11 号迁移及绑定约束已随 `7284958` 提交；第 12 号迁移已随 `92c844f` 修复 SQLite 替换绕过并通过本批回归，详细状态见执行清单和支持矩阵第十九节。下方根实体批次与 46 项条件跳过为历史数据；资源批次全量是 47 项条件跳过，不能混用。任务、审计、其他资源及成员授权仍未完成，P0-05/P0-06/P0-07 总项均保持 `[~]`。
 
 > 2026 年 9 月 28 日最终验证：项目根实体的 SQLite、MySQL 5.7/8.0 实库及后端回归已通过，替代下方启动阶段“持续验证”的状态；仅该子项为 `[x]`。完整资源关联与 P0-07 权限隔离仍为 `[~]`。详细证据、46 项条件跳过及 PostgreSQL/生产缺口见支持矩阵第十八节。
diff --git a/doc/构建版本与数据库支持矩阵.md b/doc/构建版本与数据库支持矩阵.md
index 474876c..b0ce0f8 100644
--- a/doc/构建版本与数据库支持矩阵.md
+++ b/doc/构建版本与数据库支持矩阵.md
@@ -791,3 +791,64 @@ go test -json -count=1 -timeout=8m -run 'ResourceProject|SQLProjectRepositoryMyS
 - [ ] 任务／审计等剩余资源项目关联、项目成员授权、跨项目 Web/API 越权验证和大规模性能准入。
 
 本次整理只提交已有有效修复及必要文档，不部署生产，不提升 P0-05/P0-06/P0-07 总项状态，也不将 44 项整改目标标记为完成。
+
+## 二十、任务／审计范围快照与模式 13（2026 年 9 月 28 日）
+
+### 20.1 源码与交付边界
+
+修改前检查点为 `5237e8d`，本节与模式 13 实现及最终回归测试同批提交。新增三库迁移、历史范围回填、仓储校验、HTTP 与后台任务关联。模式 12 的第十九节保留原证据，不以其结果替代本批验证。
+
+任务范围分为项目、系统与未知；实际业务任务必须关联当前存在的域名项目，新尝试拒绝资源删除、项目改变或未知父任务。历史任务／审计是快照，不加级联项目外键，不伪造历史身份；孤儿尝试仍可读。范围字段与新建校验不等于项目成员授权，也不保证任意直接 SQL 写入的正确性。
+
+### 20.2 最终验证结果
+
+证据目录：`artifacts/history-scope-20260928/`。原始日志和构建程序位于 Git 忽略目录，不作为源码提交。下表终态会话均确认退出 0，叶子统计不把父测试计为独立用例，条件跳过不计无测试文件包。
+
+| 验证 | 日志 | 结果 |
+| --- | --- | --- |
+| 完整后端 | `backend-final.jsonl` | 1514 个叶子通过、含父项 1649 条；0 失败，49 项条件跳过，28 个测试包通过 |
+| 三次竞态专项 | `race-final.jsonl` | 三轮共 258 个叶子通过、含父项 294 条；0 失败，6 项条件跳过 |
+| MySQL 5.7 | `mysql57-review.jsonl` | 135 个叶子通过、含父项 146 条；0 失败，0 跳过 |
+| MySQL 8.0 | `mysql80-review.jsonl` | 135 个叶子通过、含父项 146 条；0 失败，0 跳过 |
+| 登录与账户身份复测 | `actor-after.jsonl` | 28 个叶子通过、含父项 31 条；0 失败，0 跳过；之后又纳入最终全量及竞态验证 |
+| 独立 Windows 产品程序 | 完整后端日志中的 `TestSQLiteBusinessUpgradeStandaloneCLI` | `historical_backup`、`upgraded_backup` 两条路径通过；校验模式 13、历史任务项目及此前引用保护 |
+| 静态与模块 | `go vet ./...`、`go mod verify` | 最终竞态之后顺序执行，整体退出 0，模块全部校验通过 |
+
+MySQL 专项同时执行 SQLite 用例，不是 135 个纯 MySQL 用例。使用既有 Go 隔离夹具、独立数据库、回环监听与严格 TLS；未清空生产数据。双版本完成后仅追加 HTTP 身份修复及其测试，数据库／仓储实现未改变，最终后端和竞态在身份修复后重新执行。
+
+独立程序由本批提交前工作区构建，不称干净发行包。条件跳过代表对应外部环境未配置，不能据此宣称 PostgreSQL、Linux 或生产环境通过。
+
+### 20.3 原始失败记录与修复
+
+- `initial.jsonl`：审计响应字段增加后旧字段数断言失败；历史任务范围回填真实调用原有更新触发器，旧触发次数断言失败。更新正式预期，没有屏蔽触发器，也没有删历史数据。
+- `review-targeted.jsonl`：新增管理续期断言误要求被故障注入拒绝的开始审计也存在。修正为通用断言检查实际审计关联，正常成功流程另行要求开始和收尾两条记录。
+- `actor-before.jsonl`、`actor-fixture-before.jsonl`：首轮身份回归同时暴露测试夹具缺少账户查询、测试角色和密码不符合现有策略，原日志保留；未因此放宽产品权限或密码策略。
+- `actor-verified-before.jsonl`：夹具修正后，四个失败叶子准确复现新登录无操作者、旧 Cookie 身份串用、失败登录误认旧身份及自身账户更新后身份丢失。修复使用本次认证结果／写入前会话身份；改密另补失效后审计与旧会话拒绝回归。
+- SQLite 新迁移验证历史保留、二次迁移、回填触发器拒绝、索引冲突、版本登记失败的整体回滚和修复重试。MySQL 注入回填／版本登记故障并重试，DDL 部分完成时不清空历史或覆盖已确认范围。
+
+### 20.4 实际命令
+
+以下命令在 `backend/` 执行，无辅助验收脚本；JSON 日志在当前 Windows PowerShell 中按 Unicode 编码读取。
+
+```powershell
+go build -o ..\build\review-scert-history-windows-amd64.exe ./cmd/scert
+$env:SCERT_SQLITE_TEST_CLI = 'D:\Desktop\Scert\build\review-scert-history-windows-amd64.exe'
+go test -json -count=1 -timeout=10m ./...
+go test -race -json -count=3 -timeout=6m -run 'HistoryScope|TaskAPI|AuditLogResponse|CertificateTask|ManagementRenewal|SQLiteBusinessUpgradePreservesDependentObjects|AuthLogin|ChangePassword|UserManagement' ./internal/repository ./internal/database ./internal/httpapi ./internal/app
+go vet ./...
+go mod verify
+```
+
+MySQL 分别设置 `SCERT_MYSQL_TEST_BIN` 为 `E:\DB\5.7\bin` 和 `E:\DB\8.0\bin`，`SCERT_MYSQL_TEST_ROOT` 指向 `D:\Desktop\Scert\artifacts\history-scope-20260928\mysql-isolated`。
+
+```powershell
+go test -json -count=1 -timeout=8m -run 'HistoryScope|ResourceProject|SQLProjectRepositoryMySQLReal|MySQLRealProjectMigrationRetry' ./internal/repository ./internal/database
+```
+
+### 20.5 仍未完成
+
+- [ ] 剩余资源项目关联、成员关系与角色授权、撤权后的执行／重试／取消重新判权，以及跨项目列表、详情和危险操作越权验证。
+- [ ] PostgreSQL 当前实库、完整三库备份恢复、Linux 原生、干净完整发行包、Windows Service／systemd 重启及生产部署门禁。
+- [ ] 历史大数据回填和查询性能准入。
+
+本批子项为 `[x]` 等待复审；P0-05、P0-06、P0-07 总项保持 `[~]`，全部 44 项目标继续执行，不提供生产放行结论。
diff --git a/doc/生产部署与运维说明.md b/doc/生产部署与运维说明.md
index 0723616..1f982b0 100644
--- a/doc/生产部署与运维说明.md
+++ b/doc/生产部署与运维说明.md
@@ -1,5 +1,9 @@
 # Scert 生产部署与运维说明
 
+> 最新候选模式为 13：新增任务／审计范围快照与历史回填。必须使用支持模式 13 的程序打开已升级数据库，不能删除迁移记录降级。SQLite/PostgreSQL 在事务中回填；MySQL 可能保留部分 DDL，修复失败原因后使用同版迁移重试。回填会执行原有更新触发器，禁止绕过触发器或删除历史记录强行升级。未知归属和操作者保持未知，不自动补成默认项目或管理员。
+
+> 本批只做隔离验证，不执行生产升级或清库。程序备份恢复、双版本 MySQL 及未覆盖项见支持矩阵第二十节；PostgreSQL 当前实库、Linux 原生、干净完整发行包、服务重启及生产门禁仍未完成。下方模式 10～12 提示为历史记录，不是当前程序版本，也不是生产放行许可。
+
 > 当前模式提示（2026 年 9 月 28 日）：模式 11 已增加域名／服务器归属与同项目绑定；新增模式 12 用于修复 SQLite 替换冲突对引用保护的绕过。下方模式 10 提示是上一批历史记录。必须用支持模式 12 的程序升级已有模式 11 数据库；只改旧迁移文件不能修复已登记的库，也不能用只支持模式 10／11 的旧程序直接打开升级后的数据库。禁止删除迁移记录强行降级，回退必须使用兼容程序和已验证备份。
 
 > 升级发现悬空绑定或资源引用缺失项目时应拒绝继续，保留原库及模式，先核查真实业务再修复；不能自动删除旧任务、资源或绑定来通过迁移。SQLite 触发器冲突、版本登记失败也必须整体回滚后重试。当前证据见支持矩阵第十九节；本次未执行生产部署，成员授权、完整发行包、实机服务与全部平台门禁仍待验收。
diff --git a/doc/项目资源关联模型.md b/doc/项目资源关联模型.md
index d936cef..bc74e4e 100644
--- a/doc/项目资源关联模型.md
+++ b/doc/项目资源关联模型.md
@@ -1,6 +1,6 @@
 # 项目资源关联模型
 
-> 当前实现更新：第 11 号迁移及资源归属源码已提交为 `7284958`；第 12 号迁移正在修复复核发现的 SQLite 替换冲突绕过。下方第五节与第 10 号迁移说明是项目根实体批次的历史记录，不代表当前资源仍无归属。当前关系见第二、六、七节；最终证据见执行清单及支持矩阵第十九节。
+> 当前实现更新：第 11、12 号迁移已提交；本批新增第 13 号迁移和任务／审计范围快照，见第七、八节。第五节是项目根实体历史批次，不代表最新资源状态。本批测试及未覆盖范围以执行清单首节、支持矩阵第二十节为准；项目成员授权仍未完成。
 
 > 本批最终验证：SQLite、MySQL 5.7/8.0 项目专项、3 次竞态检测、完整后端及独立 Windows CLI 备份恢复已通过；第五节保留测试启动时状态，最终以执行清单和支持矩阵第十八节为准。P0-06/P0-07 仍为 `[~]`。
 
@@ -24,13 +24,13 @@
 | `users`、`roles` | 既有用户和角色实现；项目成员与角色分配待补 | 用户经项目成员关系获得权限，不能按用户组名称推导项目权限 |
 | `domains`、`servers` | 第 11 号迁移已增加项目、所有者、创建人和更新人 | 历史数据回填默认项目，未知身份留空；第 12 号迁移补强 SQLite 替换保护；成员授权仍待完成 |
 | `domain_servers` | 已保存项目并校验双方一致性 | 事务失败保持原绑定；三库引用约束已实现，PostgreSQL 当前实库待验 |
-| `tasks`、`task_attempts` | 既有任务与尝试表；尚未增加项目隔离 | 项目及资源归属、执行人、幂等与任务尝试关联；执行前重新判权 |
+| `tasks`、`task_attempts` | 模式 13 任务保存范围快照，尝试读取父任务范围；历史孤儿返回未知 | 已校验新任务／尝试与当前资源一致；项目成员授权、撤权重判待补 |
 | `certificates`、`certificate_versions`、`certificate_orders` | 证书业务已有实现；统一实体关系待补 | 项目、域名、订单、版本、任务和签发结果可追溯 |
 | `dns_accounts`、`dns_delegations` | DNS 配置业务已有实现；统一实体关系待补 | 项目、所有者、凭据引用、委派及验证任务关联 |
 | `deployment_targets`、`deployment_records` | 部署业务已有实现；统一实体关系待补 | 关联项目、服务器、证书版本、任务尝试和回滚记录 |
 | `renewal_policies` | 续期业务已有实现；统一实体关系待补 | 关联项目、证书、计划和执行任务 |
 | `notification_channels`、`notification_records` | 通知业务已有实现；统一实体关系待补 | 关联项目、事件、任务、通道和发送结果 |
-| `audit_logs` | 既有审计表；尚未增加项目隔离 | 项目、操作者、资源、任务与危险操作结果可追踪；全局操作单独定义范围 |
+| `audit_logs` | 模式 13 保存范围、任务、操作者；登录、账户、证书流程已接入 | 历史无法确定的身份留空，系统操作单独定义范围；项目级读取授权待补 |
 | `backup_records` | 数据库备份恢复已有实现；统一实体关系待补 | 区分系统备份与项目备份，记录范围、校验及恢复任务，不泄露私钥 |
 
 ## 三、第 10 号迁移历史记录
@@ -71,12 +71,28 @@ SQLite 第 11 号迁移安装触发器，第 12 号迁移进一步保护替换
 
 MySQL/PostgreSQL 第 11 号迁移建立项目外键与绑定复合外键，第 12 号只登记统一版本，不声称新增或验证两库特有的替换语义。项目字段和约束不是成员授权，现有跨项目列表、私钥、DNS 等权限门禁仍需单独交付。
 
-## 七、下一批任务与审计关联约束
+## 七、第 13 号迁移：任务与审计关联
 
 - [x] 确认三条实际任务入口：HTTP 申请任务、证书工作流任务和管理证书续期任务；审计另有登录、用户和本地重置等系统入口。
-- [ ] 区分业务项目任务、系统管理证书任务和历史未知归属；不能把 `management-certificate` 当作真实业务域名，也不能伪造历史操作者。
-- [ ] 确定已删除资源的任务与审计保留策略；迁移不清空历史记录，新增任务必须核对项目与资源，审计记录系统或项目范围及任务关联。
-- [ ] 任务尝试从所属任务继承范围；执行、取消、重试和撤权后的排队任务重新判权，不能以建字段代替授权。
-- [ ] 三库迁移、回滚／重试、仓储读写、接口及真实备份恢复完整覆盖后，才标记相应子项完成。
+- [x] 已实现业务项目、系统管理证书与历史未知三种范围；管理任务同时校验特殊资源 ID 和任务类型，不创建伪造业务域名。
+- [x] 已实现历史保留与可确认关系回填；新增任务通过单条 SQL 从实际域名项目写入快照，拒绝悬空资源和伪造范围。
+- [x] 尝试从父任务读取范围，新增尝试校验当前资源仍存在且项目未变；历史孤儿可读，不再新增尝试。
+- [x] 审计显式关联任务时核对资源，保留删除后的历史范围；HTTP 身份取服务端验证结果，不接受客户端自报操作者。后台及未知历史不伪造用户。
+- [ ] 执行、取消、重试及撤权后的完整项目成员重新判权；当前范围校验不是权限授权。
+- [~] SQLite、MySQL 专项和独立程序验证见支持矩阵；PostgreSQL 当前实库、完整三库恢复及生产验证仍未齐备。
 
-第 12 号已用于替换保护修复，后续新增结构从第 13 号迁移开始。上述待办没有因本批约束修复而取消。
+历史快照刻意不建立项目外键，以免删除资源或项目时丢失审计与任务。产品仓储约束新建入口，不声称防止任意直接 SQL 篡改。历史审计只回填可证实的任务／资源关系，不按时间猜测所属任务，也不把任务操作者冒充审计操作者。
+
+SQLite 与 PostgreSQL 在迁移事务内回填，失败回滚；MySQL DDL 可能已部分执行，重试跳过既有结构、仅补未知范围，完成后登记模式 13。回填会触发现存更新触发器；触发器拒绝时失败，不绕过。SQLite 已验证回填触发器、索引冲突和版本登记故障；PostgreSQL 此批只有迁移实现，没有实库证据。
+
+## 八、任务与审计接口字段增量
+
+本节说明 Scert 接口；同目录《后端接口说明文档.md》是 Smail 发信集成参考，不向其中混入 Scert 路由。
+
+| 接口 | 新增响应字段 | 含义 |
+| --- | --- | --- |
+| `GET /api/v1/tasks`、`GET /api/v1/tasks/:id` | `scope_type`、`project_id` | 任务创建时的范围快照；已有 `operator_id` 保存实际 HTTP 发起人，后台任务为空 |
+| `GET /api/v1/tasks/:id/attempts` | `scope_type`、`project_id` | 从父任务继承；缺少父任务的历史尝试返回 `unknown` 和空项目 |
+| `GET /api/v1/audit-logs` | `scope_type`、`project_id`、`task_id`、`operator_id` | 审计事件范围、明确关联的任务和本次已验证操作者；不可确认的标识为空 |
+
+`scope_type` 为 `project`、`system` 或 `unknown`；这些字段仅表达归属，不是访问令牌。登录审计使用本次认证成功的用户，失败不把请求声明或旧 Cookie 当成已验证身份；更新自身账户、改密导致会话失效后仍保存实际操作者，但不恢复旧会话。既有权限限制继续生效，新增项目成员权限尚未交付。