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.

frontend/src/App.tsx

@@ -272,7 +272,11 @@ function bandForMHz(mhz: number): string {
     [1.8, 2.0, '160m'], [3.5, 4.0, '80m'], [5.06, 5.45, '60m'], [7.0, 7.3, '40m'],
     [10.1, 10.15, '30m'], [14.0, 14.35, '20m'], [18.068, 18.168, '17m'], [21.0, 21.45, '15m'],
     [24.89, 24.99, '12m'], [28.0, 29.7, '10m'], [50, 54, '6m'], [70, 71, '4m'],
-    [144, 148, '2m'], [222, 225, '1.25m'], [420, 450, '70cm'], [1240, 1300, '23cm'],
+    [144, 148, '2m'], [222, 225, '1.25m'], [420, 450, '70cm'], [902, 928, '33cm'], [1240, 1300, '23cm'],
+    // Microwave, ADIF 3.1.7 ranges — kept in step with BandFromHz on the Go side.
+    [2300, 2450, '13cm'], [3300, 3500, '9cm'], [5650, 5925, '6cm'], [10000, 10500, '3cm'],
+    [24000, 24250, '1.25cm'], [47000, 47200, '6mm'], [75500, 81000, '4mm'],
+    [119980, 123000, '2.5mm'], [134000, 149000, '2mm'], [241000, 250000, '1mm'],
   ];
   for (const [lo, hi, b] of plan) if (mhz >= lo && mhz <= hi) return b;
   return '';