fix(autocall): rest in overs, no phantom miss, and a readable auto readout

The rest between two series was two minutes — four overs on FT8, by
which time the DX has worked four other callers and half the time has
gone. It is now counted in the station's OWN overs and is one by default:
seven calls, one over listened through, and it goes again if the station
is still there. The deadline lands mid-cycle on purpose, so "sit out one
over" means one over rather than depending on a millisecond of clock
skew.

A period the target was DECODED in is never counted as a miss. A period
is judged more than once — decodes arrive in a burst and stragglers
follow — and a later judgement holds a partial view of it, not evidence
of absence: D2ACE answered in the very period the counter then read as a
miss.

The readout moved out of the Auto button and beside it. "Auto D2ACE 1/7
·1/3" read as one number, and the control changed width every period.
The callsign is now the biggest thing on the row, the calls and the
missed periods each carry a label, the miss count appears only once there
is one, and a station being waited for gets its own amber chip.

frontend/src/components/SettingsModal.tsx

@@ -2106,7 +2106,7 @@ function SettingsModalImpl({ onClose, onSaved, initialSection, onMainPaneChanged
   const [chaseSotaOn, setChaseSotaOn] = useState(() => localStorage.getItem('opslog.chaseSota') !== '0');
   const [chaseNew, setChaseNew] = useState(false);
   const [pskTgt, setPskTgt] = useState<any>({ enabled: false, scope: 'target' });
-  const [ac, setAc] = useState<any>({ enabled: false, only: '', attempts: 7, watched_attempts: 15, misses: 3, max_rounds: 3, rest_min: 2, on_screen_only: true });
+  const [ac, setAc] = useState<any>({ enabled: false, only: '', attempts: 7, watched_attempts: 15, misses: 3, max_rounds: 3, rest_periods: 1, on_screen_only: true });
   // The named contest callsigns. Raw text in state, written on blur: it is a
   // multi-line list, and normalising it on every keystroke would fight the
   // Return key — the one key this box is built around.
@@ -5566,7 +5566,7 @@ function SettingsModalImpl({ onClose, onSaved, initialSection, onMainPaneChanged
                     ['watched_attempts', t('ac.watchedAttempts'), 1, 60],
                     ['misses', t('ac.misses'), 1, 10],
                     ['max_rounds', t('ac.rounds'), 1, 10],
-                    ['rest_min', t('ac.rest'), 1, 60],
+                    ['rest_periods', t('ac.rest'), 1, 20],
                   ] as [string, string, number, number][]).map(([k, label, min, max]) => (
                     <span key={k} className="inline-flex items-center gap-1.5">
                       <span className="text-xs text-muted-foreground">{label}</span>