fix(web client): free mode prise de coin par puissance

clients/web/assets/style.css

@@ -2412,7 +2412,7 @@ a:hover { text-decoration: underline; }
 }
 @media (min-width: 920px) {
     .controls {
-        max-width: 200px;
+        width: 200px;
     }
 }
 

clients/web/src/game/components/board.rs

@@ -327,7 +327,16 @@ fn free_mode_dests_for(
         if dest >= 1 && dest <= 24 {
             let d = dest as u8;
             if !opp_present(d) {
-                dests.push(d);
+                if d == 13 && is_white && displayed_value(board, staged, is_white, 12) < 2 {
+                    // prise de coin par puissance for white
+                    dests.push(12)
+                } else if d == 12 && !is_white && displayed_value(board, staged, is_white, 13) > -2
+                {
+                    // prise de coin par puissance for black
+                    dests.push(13)
+                } else {
+                    dests.push(d);
+                }
             }
         } else if all_in_exit {
             dests.push(0); // exit

clients/web/src/game/components/game_screen.rs

@@ -94,19 +94,22 @@ pub fn GameScreen(state: GameUiState) -> impl IntoView {
                     cmd_tx_effect
                         .unbounded_send(NetCommand::Action(PlayerAction::Move(m1, m2)))
                         .ok();
+                    staged_moves.set(vec![]);
+                    selected_origin.set(None);
+                    prev_staged_len.set(0);
                 } else {
                     let specific_err = rules.moves_allowed(&(vm1, vm2)).err();
                     move_error.set(Some(specific_err));
+                    // Keep staged_moves intact so pieces stay in place until Retry is clicked.
                 }
             } else {
                 cmd_tx_effect
                     .unbounded_send(NetCommand::Action(PlayerAction::Move(m1, m2)))
                     .ok();
+                staged_moves.set(vec![]);
+                selected_origin.set(None);
+                prev_staged_len.set(0);
             }
-
-            staged_moves.set(vec![]);
-            selected_origin.set(None);
-            prev_staged_len.set(0);
         }
     });
 
@@ -457,7 +460,11 @@ pub fn GameScreen(state: GameUiState) -> impl IntoView {
                                         <span class="free-mode-error-msg">{msg}</span>
                                         <button
                                             class="btn btn-secondary"
-                                            on:click=move |_| { move_error.set(None); }
+                                            on:click=move |_| {
+                                                staged_moves.set(vec![]);
+                                                selected_origin.set(None);
+                                                move_error.set(None);
+                                            }
                                         >{t!(i18n, reset_move)}</button>
                                     </div>
                                 }