v0.145.0 code: the OS wrapper repairs dpkg's update journal by itself after a power cut (R-876); restore-test first check 30 min after start (R-874); neutral "sent late" text (R-875)

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

internal/osupdate/unsent.go

@@ -101,7 +101,7 @@ func (l *Leg) sendUnsentLocked(ctx context.Context) int {
 		}
 		rep := l.reportFromKept(ctx, wr, f)
 		lg := l.log().With("run", rep.RunID, "layer", rep.Layer, "vmid", rep.VMID, "ring", rep.Ring, "trigger", rep.Trigger)
-		lg.Info("osupdate: sending a report the agent never sent (the agent stopped mid-pass, R-868)", "path", f)
+		lg.Info("osupdate: sending a kept report late (the agent was stopped mid-pass or the hub was away, R-868)", "path", f)
 		before := rep.unsent
 		_ = l.finish(ctx, lg, rep)
 		if _, err := os.Stat(before); os.IsNotExist(err) {
@@ -130,7 +130,7 @@ func (l *Leg) reportFromKept(ctx context.Context, wr WrapperReport, path string)
 	}
 	rep := Report{RunID: runID, Layer: wr.Layer, Trigger: trigger, Mode: wr.Mode, Ring: ring, ReleaseID: wr.ReleaseID,
 		VMID: wr.VMID, unsent: path}
-	prefix := "sent after the agent stopped mid-pass (R-868)"
+	prefix := "sent late — kept on the box until the hub could take it (R-868, R-875)"
 	switch {
 	case wr.refused():
 		rep.Outcome, rep.Refused, rep.HealthReason = "refused", wr.Refused, prefix

internal/osupdate/unsent_test.go

@@ -6,6 +6,7 @@ import (
 	"errors"
 	"os"
 	"path/filepath"
+	"strings"
 	"testing"
 	"time"
 
@@ -38,6 +39,10 @@ func TestR868_KilledPassIsReportedAtStart(t *testing.T) {
 	if r.Outcome != "applied" || !r.Healthy || r.Trigger != "debug" || r.RunID != kept.RunID || r.Ring != 0 || len(r.Upgraded) != 2 || r.VMID != 9201 {
 		t.Fatalf("report = %+v", r)
 	}
+	// R-875 (v0.145.0): neutral — the copy cannot tell a killed agent from an absent hub.
+	if !strings.HasPrefix(r.HealthReason, "sent late") || strings.Contains(r.HealthReason, "stopped mid-pass") {
+		t.Fatalf("health_reason = %q, want the neutral \"sent late …\"", r.HealthReason)
+	}
 	for _, p := range []string{rp, pp} {
 		if _, err := os.Stat(p); !os.IsNotExist(err) {
 			t.Fatalf("%s still on disk after the hub got it", filepath.Base(p))