feat: v2.2.2 无路时自动搭方块（可开关）

- Baritone allowPlace/allowParkourPlace 改为配置驱动（默认开）
- 新增 AutoScaffold 服务：快捷栏搭路方块不足时自动从背包补给
  （只进空位/只与更小的搭路方块堆交换，不碰工具食物）
- 搭路方块清单喂给 Baritone acceptableThrowawayItems（放置时从中挑选）
- AutoTrash 永不丢弃快捷栏物品，与搭路补给协同
- GUI 新增开关与搭路方块清单设置；版本升至 2.2.2

src/main/java/autodig/client/controller/DigController.java

@@ -7,6 +7,7 @@ import autodig.client.miner.NetherMiner;
 import autodig.client.miner.OverworldMiner;
 import autodig.client.service.AutoEat;
 import autodig.client.service.AutoGear;
+import autodig.client.service.AutoScaffold;
 import autodig.client.service.AutoTrash;
 import autodig.client.service.DeathRecorder;
 import autodig.client.service.KillAura;
@@ -35,6 +36,7 @@ public final class DigController {
     private final KillAura killAura = new KillAura();
     private final AutoGear autoGear = new AutoGear();
     private final AutoTrash autoTrash = new AutoTrash();
+    private final AutoScaffold autoScaffold = new AutoScaffold();
     private final DeathRecorder deathRecorder = new DeathRecorder();
     private final SessionStats stats = new SessionStats();
     private final OverworldMiner overworld = new OverworldMiner(this.bridge);
@@ -60,10 +62,11 @@ public final class DigController {
         }
         PlayerEntity player = client.player;
 
-        // 常驻能力：杀戮光环、自动进食、背包满丢垃圾、换装冷却
+        // 常驻能力：杀戮光环、自动进食、背包满丢垃圾、搭路方块补给、换装冷却
         this.killAura.tick(config);
         this.autoEat.tick(config);
         this.autoTrash.tick(config);
+        this.autoScaffold.tick(config);
         this.autoGear.tick();
 
         // 死亡处理：记录死亡次数，暂停任务，重生后按需回到死亡坐标