fix: omit status on non-archive writes, skip finished in refresh and scan

backend/store_test.go

@@ -760,6 +760,39 @@ func TestUpsertEmptyStatusPreservesStored(t *testing.T) {
 	}
 }
 
+// Mirrors the poller's read-modify-write in latest.go: Get the current row,
+// mutate only the latest-chapter fields, and Upsert the whole struct back.
+// cur.Status comes from Get (never empty — see scanBookmark), so it must
+// round-trip through Upsert unchanged rather than being reset.
+func TestLatestPollRoundTripPreservesArchived(t *testing.T) {
+	store := newTestStore(t)
+	base := Bookmark{
+		Key: "asura:solo", Site: "asura", SeriesID: "solo",
+		Status: statusArchived, UpdatedAt: time.Now().UnixMilli(),
+	}
+	if _, err := store.Upsert(base); err != nil {
+		t.Fatalf("seed: %v", err)
+	}
+
+	cur, found, err := store.Get(base.Key)
+	if err != nil || !found {
+		t.Fatalf("Get: found=%v err=%v", found, err)
+	}
+
+	num := 7.0
+	cur.LatestChapter = "7"
+	cur.LatestChapterNum = &num
+	cur.UpdatedAt = time.Now().UnixMilli()
+
+	stored, err := store.Upsert(cur)
+	if err != nil {
+		t.Fatalf("Upsert: %v", err)
+	}
+	if stored.Status != statusArchived {
+		t.Fatalf("Status = %q, want it preserved as %q", stored.Status, statusArchived)
+	}
+}
+
 func TestUpsertReplacesStatusWhenGiven(t *testing.T) {
 	store := newTestStore(t)
 	base := Bookmark{