feat: persist feature research and versioned alpha assessments

frontend/src/pages/AlphaPage.tsx

@@ -39,6 +39,7 @@ import { AlphaDetail } from "../components/AlphaDetail";
 import { AlphaSyncDialog } from "../components/AlphaSyncDialog";
 import type { PageContext, AlphaUIAction as UIAction } from "../ai/types";
 import type { UIAction as WorkspaceAction } from "../ai/types";
+import { SavedViews } from "../research/SavedViews";
 import { sourceLabel } from "../research/SourceDetails";
 
 const metricLabels = {
@@ -556,6 +557,45 @@ export function AlphaPage({
             { itemKey: "SUBMITTED", tab: "已提交" },
           ]}
         />
+        <SavedViews
+          filters={{ ...filters, submission, sort, direction, limit: pageSize }}
+          columns={visibleColumns}
+          onRestore={(view) => {
+            const {
+              submission: savedSubmission,
+              sort: savedSort,
+              direction: savedDirection,
+              limit,
+              offset: _offset,
+              ...rest
+            } = view.filters;
+            const values = Object.fromEntries(
+              Object.entries(rest)
+                .filter(([, v]) => v !== null && v !== undefined)
+                .map(([k, v]) => [k, String(v)]),
+            );
+            setFilters(values);
+            setDraft(values);
+            setPage(1);
+            setSelected([]);
+            if (
+              savedSubmission === "SUBMITTED" ||
+              savedSubmission === "UNSUBMITTED"
+            )
+              setSubmission(savedSubmission);
+            setSort(String(savedSort || "date_created"));
+            setDirection(String(savedDirection || "desc"));
+            if (typeof limit === "number") setPageSize(limit);
+            const next = [
+              ...new Set([
+                "name",
+                ...view.columns.filter((c) => c in columnLabels),
+              ]),
+            ];
+            setVisibleColumns(next);
+            localStorage.setItem("alpha-columns", JSON.stringify(next));
+          }}
+        />
         <form
           className="filter-panel"
           onSubmit={(e) => {