feat: backfill missing PnL for submitted alphas

frontend/src/pages/AlphaPage.tsx

@@ -33,6 +33,7 @@ import type {
   Alpha,
   AlphaPage as Page,
   Facets,
+  Job,
   Submission,
 } from "../types";
 import { AlphaDetail } from "../components/AlphaDetail";
@@ -313,13 +314,15 @@ export function AlphaPage({
   async function newTask(kind: string, ids: string[] = []) {
     setBusy(kind);
     try {
-      await post("/sync-jobs", {
+      const job = await post<Job>("/sync-jobs", {
         kind,
         alpha_ids: ids,
         ...(kind === "full_sync" ? { submission: "SUBMITTED" } : {}),
       });
       setImporting(false);
       setIdText("");
+      if (kind === "pnl_backfill" && job.total === 0)
+        Toast.success("已提交 Alpha 的 PnL 已齐全，无需补取");
       onTask();
     } catch (e) {
       Toast.error((e as Error).message);
@@ -966,6 +969,17 @@ export function AlphaPage({
             >
               按天同步
             </Button>
+            {submission === "SUBMITTED" && (
+              <Button
+                size="small"
+                loading={busy === "pnl_backfill"}
+                disabled={!connected || Boolean(busy)}
+                title="补取全部本地已提交 Alpha 缺失的 PnL，不受筛选和分页影响"
+                onClick={() => void newTask("pnl_backfill")}
+              >
+                检查pnl
+              </Button>
+            )}
             {submission === "SUBMITTED" && (
               <Button
                 size="small"