feat(赛马插件): 调整参与奖励并优化赛马显示对齐

- 将参与奖励从50点降低到20点以平衡经济系统
- 为所有马主添加参与奖励计算和发放逻辑
- 优化赛况显示中的马名对齐，支持中文字符宽度计算

danding_bot/plugins/group_horse_racing/commands.py

@@ -146,6 +146,10 @@ def _describe_points_delta(delta: int) -> str:
 def _build_point_changes(room: Room, odds: dict[str, float]) -> tuple[dict[str, int], dict[str, str]]:
     point_changes: dict[str, int] = {}
 
+    # Participation reward for all horse owners
+    for horse in room.horses.values():
+        point_changes[horse.owner_id] = point_changes.get(horse.owner_id, 0) + config.PARTICIPANT_REWARD
+
     for bet in room.bets:
         point_changes[bet.user_id] = point_changes.get(bet.user_id, 0) - bet.amount
 
@@ -202,6 +206,10 @@ async def settle_race(room: Room) -> RaceResult | None:
     if not champion:
         return None
 
+    # Reward all participants
+    for horse in room.horses.values():
+        await points_service.reward_participant(horse.owner_id)
+
     # Reward champion owner
     await points_service.reward_champion(champion.owner_id)
 

danding_bot/plugins/group_horse_racing/config.py

@@ -16,7 +16,7 @@ class Config(BaseSettings):
     ALLOWED_GROUPS: set[int] = Field(default_factory=set)
 
     # 奖励配置
-    PARTICIPANT_REWARD: int = 50
+    PARTICIPANT_REWARD: int = 20
     CHAMPION_REWARD: int = 200
     MIN_BET: int = 10
     MIN_ODDS: float = 1.2

danding_bot/plugins/group_horse_racing/race_engine.py

@@ -58,10 +58,21 @@ class RaceEngine:
         lines = [f"【第{room.tick_count}回合】"]
 
         sorted_horses = sorted(room.horses.values(), key=lambda h: h.index)
+        # Calculate max display width for name alignment
+        # Each CJK/fullwidth char counts as 2, others as 1
+        def _display_width(s: str) -> int:
+            w = 0
+            for ch in s:
+                w += 2 if '\u4e00' <= ch <= '\u9fff' or '\u3000' <= ch <= '\u303f' or '\uff00' <= ch <= '\uffef' else 1
+            return w
+
+        max_name_width = max(_display_width(h.name) for h in sorted_horses)
+
         for horse in sorted_horses:
             progress = min(horse.position / distance, 1.0)
             filled = int(progress * bar_width)
             bar = "█" * filled + "░" * (bar_width - filled)
-            lines.append(f"  {horse.index:02d}号 {horse.name} |{bar}| {horse.position:.1f}m")
+            pad = " " * (max_name_width - _display_width(horse.name))
+            lines.append(f"  {horse.index:02d}号 {horse.name}{pad} |{bar}| {horse.position:.1f}m")
 
         return "\n".join(lines)