fix: recognise the microwave bands — 10 GHz resolved to no band at all

Reported on 3 cm. cat.BandFromHz stopped at 23 cm, so a 10 GHz frequency came
back EMPTY — and an empty band is not cosmetic: the QSO is logged without one,
counts in no award slot, and exports with no BAND field. The low end was short
too (2190m / 630m / 560m).

Four band tables had to be extended because four exist: the CAT one, the award
plan in app.go, the cluster spot classifier, and the frontend's. Plus the places
that LIST bands — the QSO editor and award-definition pickers (you could not set
3 cm by hand either), the statistics axis, and the award band ORDER, where a
missing band sorts to the end instead of in frequency order.

Ranges and names are ADIF 3.1.7, which is what an export has to carry.

A test now pins one frequency per band across the Go tables and asserts they
agree — that is what was missing, four hand-maintained copies with nothing
checking them. It also pins that an out-of-band frequency stays empty rather
than snapping to the nearest band, which would file a QSO under a band the
operator never used.

band_plan_test.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"testing"
+
+	"hamlog/internal/cat"
+)
+
+// Three band tables exist in Go — cat.BandFromHz (the rig/CAT one), bandForHz
+// (awards) and the cluster's own — plus one in App.tsx. They must agree, and
+// nothing checked it: the CAT one stopped at 23 cm, so a 10 GHz QSO came back
+// with an EMPTY band. An empty band is not a cosmetic problem — it is not
+// logged, not counted in any award slot, and exports without a BAND field.
+//
+// One frequency per band, taken inside the range, plus the edges that used to be
+// missing entirely.
+func TestBandPlansAgree(t *testing.T) {
+	cases := []struct {
+		hz   int64
+		want string
+	}{
+		{137000, "2190m"},
+		{475000, "630m"},
+		{1840000, "160m"},
+		{3650000, "80m"},
+		{7100000, "40m"},
+		{10120000, "30m"},
+		{14200000, "20m"},
+		{18100000, "17m"},
+		{21200000, "15m"},
+		{24940000, "12m"},
+		{28400000, "10m"},
+		{50150000, "6m"},
+		{70200000, "4m"},
+		{144300000, "2m"},
+		{223500000, "1.25m"},
+		{432000000, "70cm"},
+		{1296000000, "23cm"},
+		// The microwave bands that were missing. 3 cm is the one an operator
+		// reported: 10 GHz is worked and spotted, and resolved to nothing.
+		{2320000000, "13cm"},
+		{3400000000, "9cm"},
+		{5760000000, "6cm"},
+		{10368000000, "3cm"},
+		{24048000000, "1.25cm"},
+		{47088000000, "6mm"},
+		{76032000000, "4mm"},
+		{122250000000, "2.5mm"},
+		{134928000000, "2mm"},
+		{241920000000, "1mm"},
+	}
+	for _, c := range cases {
+		if got := cat.BandFromHz(c.hz); got != c.want {
+			t.Errorf("cat.BandFromHz(%d) = %q, want %q", c.hz, got, c.want)
+		}
+		if got := bandForHz(c.hz); got != c.want {
+			t.Errorf("bandForHz(%d) = %q, want %q — the award band plan disagrees with the CAT one", c.hz, got, c.want)
+		}
+	}
+}
+
+// A frequency in no amateur band must resolve to "" everywhere, not to the
+// nearest band: guessing here would put a QSO in a band the operator never used.
+func TestBandPlanRejectsOutOfBand(t *testing.T) {
+	for _, hz := range []int64{100_000_000, 1_000_000_000, 15_000_000_000} {
+		if got := cat.BandFromHz(hz); got != "" {
+			t.Errorf("cat.BandFromHz(%d) = %q, want empty", hz, got)
+		}
+		if got := bandForHz(hz); got != "" {
+			t.Errorf("bandForHz(%d) = %q, want empty", hz, got)
+		}
+	}
+}