D49 = A follow-ups: (A) the undo copy is released only after a stable start — 3 min of running, healthy, no restart, one rule for the first verdict and the late-start watch; a watch ends only for a restore begun after it; (B, R-1279) the .fab import downloads first with the restores' D48 helper, before it removes anything. Red-proved. Commit only.

controller/cmd/controller/main.go

@@ -2093,6 +2093,10 @@ func main() {
 	// this the export path would be the uncovered sibling of two covered ones, which is how a reader
 	// concludes the whole class is handled (§2.2).
 	appExporter.SetStopGuard(exportStopGuard{g: appStopGuard})
+	// R-1279 (D48 for the import): the import downloads first, with the restores' helper and sentences.
+	if backupMgr != nil {
+		appExporter.SetImagePreparer(backupMgr.PrepareRestoreImages)
+	}
 	apiRouter.SetDebug(cfg.Logging.Level == "debug")
 
 	// --- Initialize web server ---
@@ -3439,6 +3443,38 @@ func (a *stackAdapter) StartStackServices(name string, services []string) error
 	return a.mgr.StartStackServices(name, services)
 }
 
+// ContainerSamples (R-1270 follow-up, fix A) reads each container of the stack: running, its RestartCount, its health
+// ("" without a healthcheck) — the stable-start rule's sample (backup.containerSampler). Read-only docker calls.
+func (a *stackAdapter) ContainerSamples(name string) ([]backup.ContainerSample, error) {
+	out, err := dockerexec.Command("docker", "ps", "-a", "-q", "--no-trunc", "--filter", "label=com.docker.compose.project="+name).Output()
+	if err != nil {
+		return nil, err
+	}
+	ids := strings.Fields(string(out))
+	if len(ids) == 0 {
+		return nil, nil
+	}
+	args := append([]string{"inspect", "-f", "{{.Id}} {{.State.Status}} {{.RestartCount}} {{if .State.Health}}{{.State.Health.Status}}{{end}}"}, ids...)
+	out, err = dockerexec.Command("docker", args...).Output()
+	if err != nil {
+		return nil, err
+	}
+	var res []backup.ContainerSample
+	for _, line := range strings.Split(strings.TrimSpace(string(out)), "\n") {
+		f := strings.Fields(line)
+		if len(f) < 3 {
+			continue
+		}
+		n, _ := strconv.Atoi(f[2])
+		c := backup.ContainerSample{ID: f[0], Running: f[1] == "running", RestartCount: n}
+		if len(f) > 3 {
+			c.Health = f[3]
+		}
+		res = append(res, c)
+	}
+	return res, nil
+}
+
 // RefreshAndIsRunning forces a docker ps scan before checking state.
 // Called during post-restore health check (~every 5s for up to 90s).
 // Full refresh is acceptable here since restores are rare operations.