info: Show last move

src/ui/flutter_app/lib/l10n/intl_de.arb

@@ -1184,5 +1184,9 @@
 	"sideToMove": "Wer soll umziehen",
     "@sideToMove": {
         "description": "Side to move"
+    },
+	"lastMove": "Letzter Zug",
+    "@lastMove": {
+        "description": "Last move"
     }
 }

src/ui/flutter_app/lib/l10n/intl_en.arb

@@ -1184,5 +1184,9 @@
 	"sideToMove": "Side to move",
     "@sideToMove": {
         "description": "Side to move"
-    }	
+    },
+	"lastMove": "Last move",
+    "@lastMove": {
+        "description": "Last move"
+    }
 }

src/ui/flutter_app/lib/l10n/intl_zh.arb

@@ -1184,5 +1184,9 @@
 	"sideToMove": "轮到",
     "@sideToMove": {
         "description": "Side to move"
+    },
+	"lastMove": "最后一着",
+    "@lastMove": {
+        "description": "Last move"
     }
 }

src/ui/flutter_app/lib/mill/recorder.dart

@@ -366,6 +366,8 @@ class GameRecorder {
 
   get movesCount => _history.length;
 
+  get lastMove => movesCount == 0 ? null : moveAt(movesCount - 1);
+
   String buildMoveHistoryText({cols = 2}) {
     if (_history.length == 0) {
       return '';

src/ui/flutter_app/lib/widgets/game_page.dart

@@ -1453,20 +1453,42 @@ class _GamePageState extends State<GamePage>
             "\n"
         : "";
 
-    String sideToMove = "";
+    String us = "";
+    String them = "";
     if (pos.side == PieceColor.white) {
-      sideToMove = S.of(context).player1;
+      us = S.of(context).player1;
+      them = S.of(context).player2;
     } else if (pos.side == PieceColor.black) {
-      sideToMove = S.of(context).player2;
+      us = S.of(context).player2;
+      them = S.of(context).player1;
     }
 
-    String tip = _tip == null ? "" : _tip!;
+    String tip = (_tip == null || !Config.screenReaderSupport) ? "" : "\n$_tip";
+
+    String lastMove = "";
+    if (pos.recorder != null &&
+        pos.recorder.lastMove != null &&
+        pos.recorder.lastMove.notation != null) {
+      String n1 = pos.recorder.lastMove.notation;
+
+      if (n1.startsWith("x")) {
+        String n2 = pos.recorder.moveAt(pos.recorder.movesCount - 2).notation;
+        lastMove = n2 + n1;
+      } else {
+        lastMove = n1;
+      }
+      if (Config.screenReaderSupport) {
+        lastMove = S.of(context).lastMove + ": " + them + " " + lastMove + "\n";
+      } else {
+        lastMove = S.of(context).lastMove + ": " + lastMove + "\n";
+      }
+    }
 
     String ret = phase +
         "\n" +
+        lastMove +
         S.of(context).sideToMove +
-        sideToMove +
-        "\n" +
+        us +
         tip +
         "\n\n" +
         S.of(context).pieceCount +