authentication and calendar-sync passwords keyed (214 -> 163)

Authentication reaches zero -- sign-in, bootstrap, forgot and reset password. These
are the first words a new account reads, which is why the brief ranked them above
the larger screens.

DavAppPasswords had the third toLocaleDateString(undefined, ...) in the shell; it now
uses useFormat().date like the other two.

DebugPanel's three labels are keyed too. Worth knowing rather than acting on: that
panel is rendered behind showDebug, which Background.tsx hardcodes to false, so it
never appears. Keyed rather than deleted because removing it is not my call.

src/apps/officer-web/Screens/Authentication/Layout/DuckAvatar/DebugPanel.tsx

@@ -1,3 +1,5 @@
+import { useTranslation } from '@/lib/i18n';
+
 type DebugPanelProps = {
   fullControlMode: boolean;
   cameraInfo: {
@@ -13,9 +15,10 @@ type DebugPanelProps = {
 };
 
 export function DebugPanel({ fullControlMode, cameraInfo, modelInfo }: DebugPanelProps) {
+  const { t } = useTranslation();
   return (
     <div className="fixed top-4 left-4 bg-black/80 text-white p-4 rounded text-xs font-mono space-y-2 z-[100]">
-      <div className="font-bold text-blue-400">Controls:</div>
+      <div className="font-bold text-blue-400">{t('auth.debug.controls')}</div>
       <div className={fullControlMode ? 'text-green-300' : 'text-yellow-300'}>
         Mode: {fullControlMode ? 'FULL CONTROL' : 'ROTATION ONLY'}
       </div>
@@ -29,12 +32,12 @@ export function DebugPanel({ fullControlMode, cameraInfo, modelInfo }: DebugPane
       <div>* Ctrl+Alt+Enter: Toggle full control</div>
       <div>* Ctrl+Alt+D: Toggle debug panel</div>
 
-      <div className="font-bold text-green-400 pt-2">Camera:</div>
+      <div className="font-bold text-green-400 pt-2">{t('auth.debug.camera')}</div>
       <div>Position: [{cameraInfo.cameraPosition.map((v) => v.toFixed(2)).join(', ')}]</div>
       <div>Target: [{cameraInfo.target.map((v) => v.toFixed(2)).join(', ')}]</div>
       <div>Zoom: {cameraInfo.zoom.toFixed(2)}</div>
 
-      <div className="font-bold text-yellow-400 pt-2">Model:</div>
+      <div className="font-bold text-yellow-400 pt-2">{t('auth.debug.model')}</div>
       <div>Position: [{modelInfo.position.map((v) => v.toFixed(2)).join(', ')}]</div>
       <div>Rotation: [{modelInfo.rotation.map((v) => v.toFixed(2)).join(', ')}]</div>
       <div>Scale: {modelInfo.scale.toFixed(2)}</div>