五子棋胜利发送系统公告，金币流水增加前缀

app/Http/Controllers/GomokuController.php

@@ -404,6 +404,13 @@ class GomokuController extends Controller
                 $winnerName = $winnerUser?->username ?? '';
                 $loserName = $loserUser?->username ?? '';
 
+                // 将英文 reason 转为友好的中文后缀
+                $reasonText = match ($reason) {
+                    'resign' => '（认输）',
+                    'timeout' => '（超时）',
+                    default => '',
+                };
+
                 // 发放 PvP 胜利奖励给获胜玩家
                 if ($winnerUser && $rewardGold > 0) {
                     $this->currency->change(
@@ -411,7 +418,7 @@ class GomokuController extends Controller
                         'gold',
                         $rewardGold,
                         CurrencySource::GOMOKU_WIN,
-                        "五子棋对战击败 {$loserName}",
+                        "五子棋：击败 {$loserName}{$reasonText}",
                     );
                 }
             } else {
@@ -426,7 +433,7 @@ class GomokuController extends Controller
                             'gold',
                             $rewardGold,
                             CurrencySource::GOMOKU_WIN,
-                            "五子棋击败 AI（难度{$game->ai_level}）",
+                            "五子棋：击败 AI（难度{$game->ai_level}）",
                         );
                     }
                 } else {
@@ -446,9 +453,16 @@ class GomokuController extends Controller
             'finished_at' => now(),
         ]);
 
-        // 广播对局结束事件
+        // 广播对局结束事件给参与对局的双方
         broadcast(new GomokuFinishedEvent($game->fresh(), $winnerName, $loserName, $reason));
 
+        // 有胜负，并且非 AI 获胜，发送系统房间广播
+        if ($winnerColor !== 0 && $winnerName && $winnerName !== "AI（难度{$game->ai_level}）") {
+            $msgType = $game->mode === 'pvp' ? '玩家对战' : "人机对战（难度{$game->ai_level}）";
+            $text = "🎉 棋神降临！恭喜玩家【{$winnerName}】在五子棋{$msgType}中击败了【{$loserName}】，赢得了 {$rewardGold} 金币奖励！";
+            $this->broadcastSystemMessage($game->room_id, $text);
+        }
+
         return response()->json([
             'ok' => true,
             'finished' => true,
@@ -459,6 +473,32 @@ class GomokuController extends Controller
         ]);
     }
 
+    /**
+     * 发送系统房间广播。
+     *
+     * @param  int  $roomId  房间ID
+     * @param  string  $content  广播内容
+     */
+    private function broadcastSystemMessage(int $roomId, string $content): void
+    {
+        $chatState = app(\App\Services\ChatStateService::class);
+        $messageData = [
+            'id' => $chatState->nextMessageId($roomId),
+            'room_id' => $roomId,
+            'from_user' => '系统广播',
+            'to_user' => '大家',
+            'content' => $content,
+            'is_secret' => false,
+            'font_color' => '#d97706', // 琥珀橙色
+            'action' => '大声宣告',
+            'sent_at' => now()->toDateTimeString(),
+        ];
+
+        $chatState->pushMessage($roomId, $messageData);
+        broadcast(new \App\Events\MessageSent($roomId, $messageData));
+        \App\Jobs\SaveMessageJob::dispatch($messageData);
+    }
+
     /**
      * 根据对局模式和获胜方计算奖励金币。
      *