fix(sat): give the satellite field its chevron

It has been a combobox since it was written, but without showToggle it
opens only on a keystroke or ArrowDown — both of which have to be known
about first. On screen it is a text box, which is exactly what 'still no
dropdown' meant.

allowFreeText with it: the list is the station's own, so a bird worked
once and never added must still be loggable.

frontend/src/components/DetailsPanel.tsx

@@ -489,10 +489,17 @@ export function DetailsPanel({ callsign, prefix, operatorGrid, remoteGrid, qth,
                     remembered spelling beats a fresh one every pass — but a bird
                     worked once and never added to the list must not be
                     impossible to log. */}
+                {/* showToggle: without the chevron this control is a text box that
+                    happens to open on a keystroke, which nobody discovers — and
+                    is exactly what "there is still no dropdown" meant.
+                    allowFreeText: the list is the station's own, so a bird
+                    worked once and never added to it must still be loggable. */}
                 <Combobox
                   value={details.sat_name}
                   options={satellites}
                   placeholder={t('detp.satName')}
+                  showToggle
+                  allowFreeText
                   onChange={(v) => onChange({ sat_name: v })}
                 />
               </Field>