fix: normalize workflow-result records to match ThreadRecord shape

Both REST and SSE endpoints now return workflow-result with standard
fields (role, content, timestamp) instead of non-standard (summary).
Fixes 'Invalid Date' and empty content in dashboard.

小橘 <xiaoju@shazhou.work>

packages/cli-workflow/src/commands/serve/routes-live.ts

@@ -118,7 +118,7 @@ async function emitRecordsForHead(params: {
         params.eventId.n++;
         await params.stream.writeSSE({
           event: "record",
-          data: JSON.stringify({ type: "workflow-result", ...wf }),
+          data: JSON.stringify({ type: "workflow-result", role: null, content: wf.summary, timestamp: null, returnCode: wf.returnCode }),
           id: String(params.eventId.n),
         });
         return true;

packages/cli-workflow/src/commands/serve/routes-thread.ts

@@ -42,7 +42,7 @@ async function buildThreadDetailRecords(
       const returnCode = fr.payload.meta.returnCode;
       const summary = fr.payload.meta.summary;
       if (typeof returnCode === "number" && typeof summary === "string") {
-        records.push({ type: "workflow-result", returnCode, summary });
+        records.push({ type: "workflow-result", role: null, content: summary, timestamp: null, returnCode });
       }
       continue;
     }