fix(android): saving now answers, and the editor hides what you type

Two defects, both reported from the device.

Nothing came back after Save. AdoptVault rebuilds the LIST, not the detail, so
the row stayed in edit mode: the input remained on screen and nothing said
whether the write had gone through. The detail is now redrawn from the vault in
both cases - after a success it carries the new value, after a failure the old
one, which reads without needing a sentence. It is found by UUID rather than by
index: the vault has just been replaced by the server's, and nothing guarantees
the same entry sits at the same rank.

The button also stayed inert-looking for the several seconds a save takes, so it
now says "Saving..." and disables itself while the work runs.

And the typed password showed in clear. My reasoning was that you cannot verify
it anywhere else - but that argues for a reveal button, not for leaving it
exposed the whole time. It is masked, with Show next to it.

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

mainApk.pas

@@ -192,6 +192,7 @@ type
 {$ENDIF}
     procedure OpenEntry(AVaultIndex: Integer);
     procedure SaveEntryPassword(const ANewValue: string);
+    procedure ReopenEntryByUuid(const AUuid: string);
     procedure OnClipTimer(Sender: TObject);
     procedure OnDeadline(Sender: TObject);
     procedure OnHardwareBack(Sender: TObject; var Key: Word;
@@ -522,6 +523,25 @@ begin
   end;
 end;
 
+/// Redessine le detail d'une entree retrouvee par son uuid.
+///
+/// PAR UUID ET NON PAR INDICE : le coffre vient d'etre remplace par celui du
+/// serveur, et rien ne garantit que la meme entree occupe le meme rang - un
+/// tri se fait sur le nom affiche, qu'une autre machine a pu changer.
+procedure TForm8.ReopenEntryByUuid(const AUuid: string);
+var
+  I: Integer;
+begin
+  for I := 0 to FVault.Count - 1 do
+    if FVault.Entry(I).Uuid = AUuid then
+    begin
+      OpenEntry(I);
+      Exit;
+    end;
+  // Disparue du distant entre-temps : la liste est deja a jour, on y reste.
+  WebCall('PM.back()');
+end;
+
 /// Change le mot de passe de l'entree ouverte, et publie.
 ///
 /// TIRER, MODIFIER, RECHIFFRER, PUBLIER - dans cet ordre, et sur l'instantane
@@ -632,6 +652,13 @@ begin
             end
             else
               WebCall('PM.toast(' + JsArg('Not saved - ' + LErr) + ')');
+            // LE DETAIL DOIT REVENIR, dans les deux cas. AdoptVault reconstruit
+            // la LISTE ; la ligne en cours d'edition restait telle quelle, donc
+            // le champ de saisie demeurait a l'ecran et rien ne disait si
+            // l'enregistrement avait abouti. On la redessine depuis le coffre :
+            // apres un succes elle porte la nouvelle valeur, apres un echec
+            // l'ancienne - ce qui se lit sans commentaire.
+            ReopenEntryByUuid(LUuid);
           end);
       finally
         LClient.Free;