✨ feat(tsl-api-reference): expand and reorganize api catalog

Flatten builtin pages, add third-party and platform scopes, and import financial and data warehouse references.

Keep the existing generated index without rebuilding after signature normalization.

skills/tsl-api-reference/references/codegen/dotnet/financial/fund-graded_fund.md

@@ -0,0 +1,17 @@
+# 金融 / 基金 / 分级基金
+
+## `getAllStructuredFunds()`
+
+声明：function
+
+获取所有分级子基金可在交易所交易的母基金，与当前时间pn_date()相关
+
+返回：array
+
+### 示例
+
+范例01：调用 GetAllStructuredFunds
+
+```tsl
+Return GetAllStructuredFunds();
+```