Poinbase 订单簿、永续滑点减半、预测盘滑点调整、浏览器统一记账

- Poinbase 主池改为订单簿冲击曲线：第 38 天 2 PSC 约 0.1%、200 PSC 约 4%
- 永续成交深度 50,000 → 100,000，滑点减半
- 预测盘 b = 1.8 × 额度 / ln 2（5% 盘口押 50 约贵 10%），消息价 2% / 5% / 12%
- 统一记账函数 Chain：钱包每一笔进出写进浏览器和钱包记录，合约调用按执行前后余额差记账；Ponero 不上浏览器；账本上限 500
- 存档数据版本 3

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/Decentralized.Domain/Market.cs

@@ -71,7 +71,7 @@ namespace Decentralized.Domain
         {
             var m = new Market();
             double depth = Tuning.PoolDepth(day), p = Tuning.PscStartPrice;
-            m.Pools.Add(Pool.Create(Venue.Exchange, Assets.PSC, Assets.CRC, p, depth, Tuning.ExchangeFee));
+            m.Pools.Add(Pool.CreateBook(Venue.Exchange, Assets.PSC, Assets.CRC, p, depth, Tuning.ExchangeFee));
             m.Pools.Add(Pool.Create(Venue.Dex, Assets.PSC, Assets.CRC, p, depth * SideDepthShare, Tuning.DexFee));
             m.Pools.Add(Pool.Create(Venue.Dex, Assets.CRT, Assets.CRC, 1, depth * SideDepthShare, Tuning.DexFee));
             m.Pools.Add(Pool.Create(Venue.Dex, Assets.CRA, Assets.CRC, 1, depth * SideDepthShare, Tuning.DexFee));