feat: DSL适配率报告+零静默丢弃YAML字段
Root cause: .IgnoreUnmatchedProperties()→15+YAML字段被静默丢弃
修复:
1. 移除IgnoreUnmatchedProperties→未知字段立即报错
2. 补全所有缺失C#属性:GameInfo(engine_type/players),
PhaseDslConfig(turn_order/fu_flag),DrawSubPhase(on_draw_flower/on_empty_deck),
WinConditionConfig(pair_must_be_258 alias),PreHookConfig(condition),
FlowerDslConfig→FlowerScoringConfig→FlowerMatchingConfig完整嵌套
3. FuFlagConfig/PlayersConfig新类
4. CapabilityRegistry.ComputeCoverage→DSL适配率百分比
5. Demo显示:✅ DSL适配率:7/7(100%)
结果:4个DSL全部100%加载,无字段被静默丢弃
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