fix(fleet): publish a day once five boxes report it

README.md

@@ -472,7 +472,7 @@ partial; missing data is unknown. One instance supplies its local shard only;
 public multi-shard totals need an explicit safe collector.
 
 The separate anonymous daily-report feed is `GET /v1/fleet/public`. It exposes
-only daily counts and dimension labels with at least 10 reports, for at most
+only daily counts and dimension labels with at least 5 reports, for at most
 90 days. It contains imported relay history and new reports received by Cloud;
 consumers replace the old archive rather than adding both. It needs no hourly
 energy activation. Updated Core sends it only after the current project

internal/fleet/public.go

@@ -21,7 +21,9 @@ func (s *Service) Public(w http.ResponseWriter, r *http.Request) {
 		w.WriteHeader(http.StatusServiceUnavailable)
 		return
 	}
-	const minimum = 10
+	// Five since 23 October 2026 (Fredrik): the fleet is small and the
+	// reports carry no home id. A day and each label below it stay hidden.
+	const minimum = 5
 	days := make([]map[string]any, 0, len(view.Days))
 	for _, d := range view.Days {
 		row := map[string]any{"date": d.Date, "reports": nil}

internal/fleet/public_test.go

@@ -24,7 +24,7 @@ func TestPublicFleetHidesSmallDaysAndEachSmallLabel(t *testing.T) {
 	now := time.Now()
 	svc.now = func() time.Time { return now }
 	report := fleetwire.Report{Schema: fleetwire.Schema, Version: "v0.147.0", Channel: "stable", Drivers: []string{}, Battery: "none", Zone: "SE4", Age: "unknown"}
-	for range 9 {
+	for range 4 {
 		_, err = reg.FleetPut(report, now)
 		if err != nil {
 			t.Fatal(err)
@@ -48,10 +48,10 @@ func TestPublicFleetHidesSmallDaysAndEachSmallLabel(t *testing.T) {
 	_, _ = reg.FleetPut(report, now)
 	v = get()
 	d = v["days"].([]any)[0].(map[string]any)
-	if d["reports"] != float64(10) || len(d["ftw_versions"].(map[string]any)) != 0 {
+	if d["reports"] != float64(5) || len(d["ftw_versions"].(map[string]any)) != 0 {
 		t.Fatal("small version exposed")
 	}
-	if d["channels"].(map[string]any)["stable"] != float64(10) {
+	if d["channels"].(map[string]any)["stable"] != float64(5) {
 		t.Fatal("safe cell hidden")
 	}
 }