feat: persistent Ctrl+wheel zoom, saved award-column widths, F9 + hide-empty CW macros

- Zoom: our own Ctrl+wheel zoom (CSS zoom on the root, 50–250%), persisted in
  localStorage and restored at startup; Ctrl+0 resets. Replaces the non-persistent
  native WebView2 zoom. The freq-digit wheel now ignores Ctrl so it passes through
  to zoom.
- Award column widths: they were stripped from AG Grid's saved column state (that
  strip fixes a visibility desync) which also dropped their width. Now persisted
  separately per award code (localStorage + portable DB copy) and re-applied on
  rebuild/reopen.
- CW keyer widget: macros padded to 9 (F1–F9 slot) and empty macros hidden like
  the voice keyer, with the F-number kept tied to the real macro index so the
  F-key shortcuts still line up. New QRZ? default for F9.

frontend/src/components/SettingsModal.tsx

@@ -1407,7 +1407,7 @@ export function SettingsModal({ onClose, onSaved, initialSection, onMainPaneChan
           const locs: any = await ListTQSLStationLocations();
           setStationLocations((locs ?? []).map((l: any) => l.name).filter(Boolean));
         } catch { /* TQSL not installed — leave the dropdown empty */ }
-        try { setWk(await GetWinkeyerSettings() as any); } catch {}
+        try { const s: any = await GetWinkeyerSettings(); if (Array.isArray(s.macros)) { while (s.macros.length < 9) s.macros.push({ label: '', text: '' }); } setWk(s); } catch {}
         try { setWkPorts((await ListSerialPorts() ?? []) as string[]); } catch {}
         try { setAudioCfg(await GetAudioSettings() as any); } catch {}
         try { setEmailCfg(await GetEmailSettings() as any); } catch {}
@@ -1441,7 +1441,7 @@ export function SettingsModal({ onClose, onSaved, initialSection, onMainPaneChan
         try { setBackupCfg(await GetBackupSettings() as any); } catch {}
         try { setQslDefaults(await GetQSLDefaults() as any); } catch {}
         try { setExtSvc(await GetExternalServices() as any); } catch {}
-        try { setWk(await GetWinkeyerSettings() as any); } catch {}
+        try { const s: any = await GetWinkeyerSettings(); if (Array.isArray(s.macros)) { while (s.macros.length < 9) s.macros.push({ label: '', text: '' }); } setWk(s); } catch {}
         try { setAudioCfg(await GetAudioSettings() as any); } catch {}
         try { setEmailCfg(await GetEmailSettings() as any); } catch {}
         try { setEqslCfg(await QSLGetEmailTemplates() as any); } catch {}