feat: persist feature research and versioned alpha assessments

frontend/src/ai/workspace.ts

@@ -7,6 +7,7 @@ const contextLabels: Record<WorkspacePage, (context: PageContext) => string> = {
   operators: () => "上下文：算子库",
   templates: (context) =>
     `上下文：模板工坊${context.research_asset_id ? ` · ${context.research_asset_id}` : ""}${context.research_experiment_id ? ` · 实验 ${context.research_experiment_id}` : ""}`,
+  features: () => "上下文：特征工程",
   variants: () => "上下文：Alpha 变体",
   account: () => "上下文：个人信息页",
   backtests: () => "上下文：回测研究",
@@ -31,6 +32,7 @@ type Destination = {
 };
 // Exhaustive action destinations prevent a new action silently falling into Alpha.
 const destinations: Record<UIAction["type"], Destination> = {
+  open_feature: { page: "features", chat: "responsive" },
   open_template: { page: "templates", chat: "responsive" },
   open_experiment: { page: "templates", chat: "responsive" },
   open_variant: { page: "variants", chat: "responsive" },