3 files changed, 66 insertions, 6 deletions
diff --git a/internal/goprecords/report.go b/internal/goprecords/report.go
index 531cfc3..bc752f5 100644
--- a/internal/goprecords/report.go
+++ b/internal/goprecords/report.go
@@ -5,6 +5,7 @@ import (
 	"io"
 	"sort"
 	"strings"
+	"time"
 )
 
 type metricExtractor struct {
@@ -145,6 +146,7 @@ func wrapHTMLDocument(body string) string {
 	b.WriteString("<title>goprecords uptime report</title>\n")
 	b.WriteString(htmlStyle)
 	b.WriteString("</head>\n<body>\n")
+	b.WriteString("<p><strong>Host markers:</strong> * current uptime record; + recent upload with stale or not-yet-recorded uptime.</p>\n")
 	b.WriteString(body)
 	b.WriteString("</body>\n</html>\n")
 	return b.String()
@@ -322,10 +324,6 @@ func (r reportBuilder) buildHostTable() ([]tableRow, bool, bool) {
 			break
 		}
 		h := kv.agg
-		active := " "
-		if h.IsActive(90) {
-			active = "*"
-		}
 		lastUpdated := ""
 		if !h.LastUpdated.IsZero() {
 			lastUpdated = h.LastUpdated.UTC().Format("2006-01-02 15:04")
@@ -333,7 +331,7 @@ func (r reportBuilder) buildHostTable() ([]tableRow, bool, bool) {
 		}
 		rows = append(rows, tableRow{
 			Pos:         fmt.Sprintf("%d.", i+1),
-			Name:        active + h.Stats.Name,
+			Name:        hostStatusMarker(h) + h.Stats.Name,
 			Value:       r.humanStrHost(h),
 			LastKernel:  h.LastKernel,
 			LastUpdated: lastUpdated,
@@ -345,6 +343,17 @@ func (r reportBuilder) buildHostTable() ([]tableRow, bool, bool) {
 	return rows, true, hasLastUpdated
 }
 
+func hostStatusMarker(h *HostAggregate) string {
+	if h.IsActive(90) {
+		return "*"
+	}
+	age := time.Since(h.LastUpdated)
+	if !h.LastUpdated.IsZero() && age >= 0 && age < 24*time.Hour {
+		return "+"
+	}
+	return " "
+}
+
 func (r reportBuilder) buildCategoryTable() ([]tableRow, bool) {
 	m := r.aggregates.Kernel
 	switch r.category {
diff --git a/internal/goprecords/report_test.go b/internal/goprecords/report_test.go
index 68371ee..51e5917 100644
--- a/internal/goprecords/report_test.go
+++ b/internal/goprecords/report_test.go
@@ -93,6 +93,50 @@ func TestReportWithData(t *testing.T) {
 	}
 }
 
+func TestHostStatusMarker(t *testing.T) {
+	now := time.Now()
+	tests := []struct {
+		name        string
+		lastSeen    uint64
+		lastUpdated time.Time
+		want        string
+	}{
+		{name: "current uptime record", lastSeen: uint64(now.Unix()), lastUpdated: now.Add(-time.Hour), want: "*"},
+		{name: "recent upload with stale record", lastSeen: uint64(now.Add(-100 * 24 * time.Hour).Unix()), lastUpdated: now.Add(-time.Hour), want: "+"},
+		{name: "stale upload and record", lastSeen: uint64(now.Add(-100 * 24 * time.Hour).Unix()), lastUpdated: now.Add(-25 * time.Hour), want: " "},
+		{name: "future upload timestamp", lastSeen: uint64(now.Add(-100 * 24 * time.Hour).Unix()), lastUpdated: now.Add(time.Hour), want: " "},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			host := NewHostAggregate("host", "Linux")
+			host.Stats.LastSeen = tt.lastSeen
+			host.LastUpdated = tt.lastUpdated
+			if got := hostStatusMarker(host); got != tt.want {
+				t.Fatalf("hostStatusMarker() = %q, want %q", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestReportMarksRecentUploadWithStaleRecord(t *testing.T) {
+	aggs := &Aggregates{
+		Host:        make(map[string]*HostAggregate),
+		Kernel:      make(map[string]*Aggregate),
+		KernelMajor: make(map[string]*Aggregate),
+		KernelName:  make(map[string]*Aggregate),
+	}
+	host := NewHostAggregate("reporting", "FreeBSD 14.2")
+	host.Stats.LastSeen = uint64(time.Now().Add(-100 * 24 * time.Hour).Unix())
+	host.LastUpdated = time.Now().Add(-time.Hour)
+	aggs.Host[host.Stats.Name] = host
+
+	report := NewHostReporter(aggs, 20, MetricUptime, FormatPlaintext, 1).Report()
+	if !strings.Contains(report, "+reporting") {
+		t.Fatalf("expected recent-upload marker in report, got %q", report)
+	}
+}
+
 func TestReportHTML(t *testing.T) {
 	aggs := &Aggregates{
 		Host:        make(map[string]*HostAggregate),
@@ -122,6 +166,13 @@ func TestReportHTML(t *testing.T) {
 	}
 }
 
+func TestHTMLDocumentExplainsHostMarkers(t *testing.T) {
+	report := wrapHTMLDocument("<p>report</p>")
+	if !strings.Contains(report, "* current uptime record; + recent upload") {
+		t.Fatalf("expected host marker legend, got %q", report)
+	}
+}
+
 func TestReportLastUpdated(t *testing.T) {
 	aggs := &Aggregates{
 		Host:        make(map[string]*HostAggregate),
diff --git a/internal/version/version.go b/internal/version/version.go
index 9a3f8a1..9fbb409 100644
--- a/internal/version/version.go
+++ b/internal/version/version.go
@@ -1,4 +1,4 @@
 package version
 
 // Tag is the application release version.
-const Tag = "0.5.4"
+const Tag = "0.5.5"