Domain core: seeded RNG, asset registry, wallets, AMM pairs, mining

Pure logic layer with no game references: xoshiro128** RNG with savable
state, asset registry (PSC, CRC, CRT, CRA, SPARK, Ponero), wallets whose
taint and cost basis move with transfers, constant-product pools with
nightly reversion, and mining (Probidia/PMD GPUs, RatDigg ASICs, network
hash response, halving, wear and sudden death). 35 checks pass.

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

CHANGELOG.md

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+# Changelog
+
+## 未发布
+
+- 纯逻辑层：带种子的随机数、资产登记、地址账本（污点与成本随币走）、恒定乘积交易对、挖矿（显卡、矿机、全网算力、减半、损耗与暴毙）。