feat: Ultrabeam over USB, Paper QSL from the awards grid, per-role schemas

Ultrabeam on a serial port never worked, and three faults were stacked so
each hid the next:

  - Stop() did not wait for the poll loop, so a stopped client kept the COM
    port. Every later client then failed with "Serial port busy" — the
    program holding it being OpsLog itself.
  - startUltrabeam tore the old client down CONCURRENTLY with starting the
    new one, and "Test connection" built a second client on a port already
    ours. Harmless over TCP, fatal on a port with one owner.
  - A silent serial port returns (0, nil) and bufio retries that a hundred
    times: a 4 s timeout became ~7 minutes of a frozen poll loop logging
    nothing.

The controller then answered at once. Confirmed on hardware: the USB cable
presents TWO COM ports, only the second reaches the controller, and only at
19200 baud — so the speed is pinned in code (an FTDI cable opens at any
speed, and a wrong one is indistinguishable from a dead controller) and the
port field says which one to pick. The first exchange after each connect is
hex-dumped, which separates silence from a wrong baud from a misread frame.

Databases now carry only the tables their role needs. Every target used to
get the whole migration set, so a shared MySQL logbook grew settings and
station_profiles tables nothing ever wrote to — an operator inspecting the
server could not tell which copy was authoritative. Statements are filtered
by role, unknown tables are kept in both (fail-safe), and existing databases
are cleaned once, dropping only EMPTY tables. Settings → Database gains a
Compact button, since SQLite frees pages inside the file and never shrinks it.

Also:
  - Awards: the callsigns behind a cell open the QSL Manager on Paper QSL,
    searched, ready for the card dates.
  - The record button no longer goes missing after an update: whether manual
    recording is possible is a per-profile question that was asked once, at
    startup, before the profile was known.
  - Alert rules and filter presets confirm that they were saved.
  - Spot clicks on the radio panadapter carry the POTA park into F3.
  - The build gate is re-checked wherever the active callsign can change; it
    ran at startup alone, and a fresh install has no callsign then.

frontend/src/components/AwardsPanel.tsx

@@ -68,7 +68,11 @@ function ProgressBar({ worked, confirmed, total }: { worked: number; confirmed:
 // detection only means anything for those — see the Missing refs button.
 type AwardListItem = { code: string; name: string; valid?: boolean; bands?: string[]; emission?: string[]; scoped?: boolean };
 
-export function AwardsPanel({ onEditQSO, onAwardsChanged }: { onEditQSO?: (id: number) => void; onAwardsChanged?: () => void } = {}) {
+export function AwardsPanel({ onEditQSO, onAwardsChanged, onPaperQSL }: {
+  onEditQSO?: (id: number) => void;
+  onAwardsChanged?: () => void;
+  onPaperQSL?: (call: string) => void;
+} = {}) {
   const { t } = useI18n();
   const [awardList, setAwardList] = useState<AwardListItem[]>([]);
   // Computed results are cached per award code — each award is scanned only the
@@ -604,7 +608,7 @@ export function AwardsPanel({ onEditQSO, onAwardsChanged }: { onEditQSO?: (id: n
       </div>
 
       {cell && current && (
-        <CellQSOModal code={current.code} cell={cell} modeClass={modeFilter === 'all' ? '' : modeFilter} onClose={() => setCell(null)} />
+        <CellQSOModal code={current.code} cell={cell} modeClass={modeFilter === 'all' ? '' : modeFilter} onClose={() => setCell(null)} onPaperQSL={onPaperQSL} />
       )}
       {showMissing && current && (
         <MissingQSOModal code={current.code} name={current.name} onClose={() => setShowMissing(false)} onEditQSO={onEditQSO} />
@@ -835,7 +839,14 @@ function MissingQSOModal({ code, name, onClose, onEditQSO }: { code: string; nam
 }
 
 // CellQSOModal lists the QSOs behind one award-grid cell (reference × band).
-function CellQSOModal({ code, cell, modeClass, onClose }: { code: string; cell: { ref: string; band: string; name?: string }; modeClass: string; onClose: () => void }) {
+function CellQSOModal({ code, cell, modeClass, onClose, onPaperQSL }: {
+  code: string; cell: { ref: string; band: string; name?: string }; modeClass: string;
+  onClose: () => void;
+  // Send this callsign to the QSL Manager's Paper QSL view. Chasing a
+  // confirmation starts here — an unconfirmed entity, the contact behind it —
+  // and used to continue by retyping the callsign into another tab.
+  onPaperQSL?: (call: string) => void;
+}) {
   const { t } = useI18n();
   const [qsos, setQsos] = useState<any[]>([]);
   const [loading, setLoading] = useState(true);
@@ -872,7 +883,15 @@ function CellQSOModal({ code, cell, modeClass, onClose }: { code: string; cell:
                 {qsos.map((q, i) => (
                   <tr key={q.id ?? i} className="border-b border-border/30">
                     <td className="py-1 px-3 font-mono">{fmt(q.qso_date)}</td>
-                    <td className="py-1 pr-2 font-mono font-semibold">{q.callsign}</td>
+                    <td className="py-1 pr-2 font-mono font-semibold">
+                      {onPaperQSL ? (
+                        <button type="button" className="hover:underline text-primary"
+                          title={t('awp.paperQslTip')}
+                          onClick={() => { onPaperQSL(String(q.callsign ?? '')); onClose(); }}>
+                          {q.callsign}
+                        </button>
+                      ) : q.callsign}
+                    </td>
                     <td className="py-1 pr-2">{q.band}</td>
                     <td className="py-1 pr-2">{q.mode}</td>
                     <td className="py-1 pr-3 text-muted-foreground">{[isQSLConfirmed(q.lotw_rcvd) && 'LoTW', isQSLConfirmed(q.qsl_rcvd) && 'QSL', isQSLConfirmed(q.eqsl_rcvd) && 'eQSL'].filter(Boolean).join(', ')}</td>