Add retry button to run detail page for failed/timed_out runs

The retry button was only on the Inbox page but missing from the individual
run detail view. This adds it next to the status badge, matching the same
wakeup pattern used in the Inbox (retry_failed_run with context snapshot).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

ui/src/pages/AgentDetail.tsx

@@ -1395,6 +1395,38 @@ function RunDetail({ run, agentRouteId, adapterType }: { run: HeartbeatRun; agen
     },
   });
 
+  const canRetryRun = run.status === "failed" || run.status === "timed_out";
+  const retryPayload = useMemo(() => {
+    const payload: Record<string, unknown> = {};
+    const context = asRecord(run.contextSnapshot);
+    if (!context) return payload;
+    const issueId = asNonEmptyString(context.issueId);
+    const taskId = asNonEmptyString(context.taskId);
+    const taskKey = asNonEmptyString(context.taskKey);
+    if (issueId) payload.issueId = issueId;
+    if (taskId) payload.taskId = taskId;
+    if (taskKey) payload.taskKey = taskKey;
+    return payload;
+  }, [run.contextSnapshot]);
+  const retryRun = useMutation({
+    mutationFn: async () => {
+      const result = await agentsApi.wakeup(run.agentId, {
+        source: "on_demand",
+        triggerDetail: "manual",
+        reason: "retry_failed_run",
+        payload: retryPayload,
+      }, run.companyId);
+      if (!("id" in result)) {
+        throw new Error("Retry was skipped because the agent is not currently invokable.");
+      }
+      return result;
+    },
+    onSuccess: (newRun) => {
+      queryClient.invalidateQueries({ queryKey: queryKeys.heartbeats(run.companyId, run.agentId) });
+      navigate(`/agents/${agentRouteId}/runs/${newRun.id}`);
+    },
+  });
+
   const { data: touchedIssues } = useQuery({
     queryKey: queryKeys.runIssues(run.id),
     queryFn: () => activityApi.issuesForRun(run.id),
@@ -1485,12 +1517,29 @@ function RunDetail({ run, agentRouteId, adapterType }: { run: HeartbeatRun; agen
                   {resumeRun.isPending ? "Resuming…" : "Resume"}
                 </Button>
               )}
+              {canRetryRun && !canResumeLostRun && (
+                <Button
+                  variant="ghost"
+                  size="sm"
+                  className="text-xs h-6 px-2"
+                  onClick={() => retryRun.mutate()}
+                  disabled={retryRun.isPending}
+                >
+                  <RotateCcw className="h-3.5 w-3.5 mr-1" />
+                  {retryRun.isPending ? "Retrying…" : "Retry"}
+                </Button>
+              )}
             </div>
             {resumeRun.isError && (
               <div className="text-xs text-destructive">
                 {resumeRun.error instanceof Error ? resumeRun.error.message : "Failed to resume run"}
               </div>
             )}
+            {retryRun.isError && (
+              <div className="text-xs text-destructive">
+                {retryRun.error instanceof Error ? retryRun.error.message : "Failed to retry run"}
+              </div>
+            )}
             {startTime && (
               <div className="space-y-0.5">
                 <div className="text-sm font-mono">