fix(web): 链相位语义色/失败可重试 + 模板填入中文标签/删除可撤销/工具卡文案 + 模板库 PageHeader

apps/web/components/chain/ChainPage.tsx

@@ -4,6 +4,8 @@ import { useCallback, useEffect, useMemo, useState } from "react";
 
 import { AppShell } from "@/components/AppShell";
 import { useToast } from "@/components/Toast";
+import { Button } from "@/components/ui/Button";
+import { StatusNote } from "@/components/ui/StatusNote";
 import { api } from "@/lib/api/client";
 import { chainPhase, chainResultView, type ChainKind } from "@/lib/chain/chain";
 import { friendlyFromApiError } from "@/lib/errors/messages";
@@ -77,6 +79,11 @@ export function ChainPage({ project }: ChainPageProps) {
     if (jobId) poll.poll(jobId);
   }, [jobId, poll]);
 
+  // 链失败重试：重启轮询同一 job（覆盖轮询/网络抖动这类瞬时失败；图从检查点续）。
+  const onRetry = useCallback((): void => {
+    if (jobId) poll.poll(jobId);
+  }, [jobId, poll]);
+
   const showProgress = jobId !== null && result !== null;
   // 链运行中/等待裁决时禁止重复发起。
   const busy =
@@ -112,13 +119,25 @@ export function ChainPage({ project }: ChainPageProps) {
         ) : null}
 
         {phase === "failed" ? (
-          <p className="text-sm text-conflict">
-            {poll.error ?? "链运行失败，请重试。"}
-          </p>
+          <StatusNote variant="danger" title="链运行失败">
+            <p>{poll.error ?? "请稍后重试。"}</p>
+            {jobId !== null ? (
+              <Button
+                variant="outline"
+                size="sm"
+                onClick={onRetry}
+                className="mt-3"
+              >
+                重试
+              </Button>
+            ) : null}
+          </StatusNote>
         ) : null}
 
         {phase === "completed" ? (
-          <p className="text-sm text-pass">本链已全部跑完。</p>
+          <StatusNote variant="success" title="本链已全部跑完">
+            <p>各章已写完并验收，可在大纲或正文里继续推进。</p>
+          </StatusNote>
         ) : null}
       </div>
     </AppShell>