fix(totp): pas de notification 'toujours dans le tray' pendant le scan du QR

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

delphi-backend/Source/PM.Bridge.pas

@@ -217,7 +217,7 @@ type
     // it before we came out of the tray. False for callers that already decided
     // who should be focused (post-autofill hands it to the filled window).
     procedure MinimizeToTray(AClearClipboard: Boolean = True;
-      AReturnForeground: Boolean = True);
+      AReturnForeground: Boolean = True; ANotify: Boolean = True);
     // Record the application currently in the foreground as the one to restore
     // focus to when we go back to the tray. Ignores our own and shell windows.
     procedure CaptureForegroundOwner;
@@ -835,7 +835,7 @@ begin
 end;
 
 procedure TPMBridge.MinimizeToTray(AClearClipboard: Boolean = True;
-  AReturnForeground: Boolean = True);
+  AReturnForeground: Boolean = True; ANotify: Boolean = True);
 var
   LFormHwnd, LAppHwnd: HWND;
 begin
@@ -893,7 +893,9 @@ begin
   // 3. First-time only: pop a balloon notification so the user knows the
   //    app is still running in the tray (and didn't crash). Skipped when
   //    the user opted out via Settings.
-  if (not FBalloonShown) and FShowNotifications then
+  // ANotify=False : absence de quelques centaines de ms (scan du QR), la
+  // fenetre revient seule - l'annonce "toujours dans le tray" serait fausse.
+  if ANotify and (not FBalloonShown) and FShowNotifications then
   begin
     ShowFirstTimeBalloon;
     FBalloonShown := True;

delphi-backend/UMainForm.pas

@@ -1399,7 +1399,7 @@ begin
   else if ACmd = 'qr/screen' then
   begin
     LogLine('qr/screen: scanning');
-    FBridge.MinimizeToTray(False, False);
+    FBridge.MinimizeToTray(False, False, False);
     TThread.CreateAnonymousThread(
       procedure
       var