合约信息拆分为品种和合约两个展示字段

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/frontend/src/utils/contract.ts

@@ -0,0 +1,7 @@
+export function parseTsCode(tsCode: string): { symbol: string; contract: string } {
+  const m = tsCode.match(/^([A-Za-z]+)(\d{4})\.[A-Z]+$/)
+  if (!m) {
+    return { symbol: tsCode, contract: '' }
+  }
+  return { symbol: m[1], contract: m[2] }
+}