增强回测demo输出与分区加载

crates/fidc-core/src/universe.rs

@@ -21,6 +21,7 @@ pub struct UniverseCandidate {
 pub struct SelectionContext<'a> {
     pub decision_date: NaiveDate,
     pub benchmark: &'a BenchmarkSnapshot,
+    pub reference_level: f64,
     pub data: &'a DataSet,
 }
 
@@ -77,8 +78,8 @@ impl DynamicMarketCapBandSelector {
 
 impl UniverseSelector for DynamicMarketCapBandSelector {
     fn select(&self, ctx: &SelectionContext<'_>) -> Vec<UniverseCandidate> {
-        let _regime = self.regime(ctx.benchmark.close);
-        let (min_cap, max_cap) = self.band_for_level(ctx.benchmark.close);
+        let _regime = self.regime(ctx.reference_level);
+        let (min_cap, max_cap) = self.band_for_level(ctx.reference_level);
 
         let mut selected = ctx
             .data