diff --git a/src/frontend/src/components/CheckpointPanel.tsx b/src/frontend/src/components/CheckpointPanel.tsx
index 7295768..ca22120 100644
--- a/src/frontend/src/components/CheckpointPanel.tsx
+++ b/src/frontend/src/components/CheckpointPanel.tsx
@@ -1,5 +1,5 @@
 import { useState, useEffect } from 'react';
-import { api } from '../api';
+import { api, _getProjectId } from '../api';
 import { useStore } from '../store';
 
 // ── 类型定义（对齐后端 checkpoints 表） ──
@@ -57,7 +57,7 @@ function DecisionCheckpoint({
     if (!selected) return;
     setLoading(true);
     try {
-      const res = await fetch(`/api/projects/${api._getProjectId()}/tasks/${taskId}/checkpoints/${cp.id}/approve`, {
+      const res = await fetch(`/api/projects/${_getProjectId()}/tasks/${taskId}/checkpoints/${cp.id}/approve`, {
         method: 'POST', headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ resolved_by: 'user', note: `选择: ${selected}${note ? '\n' + note : ''}` }),
       });
@@ -125,7 +125,7 @@ function VerifyCheckpoint({
     if (action === 'reject' && !showReject) { setShowReject(true); return; }
     setLoading(true);
     try {
-      const res = await fetch(`/api/projects/${api._getProjectId()}/tasks/${taskId}/checkpoints/${cp.id}/${action}`, {
+      const res = await fetch(`/api/projects/${_getProjectId()}/tasks/${taskId}/checkpoints/${cp.id}/${action}`, {
         method: 'POST', headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ resolved_by: 'user', note: reason }),
       });
@@ -215,7 +215,7 @@ function ActionCheckpoint({
     if (!allDone) return;
     setLoading(true);
     try {
-      const res = await fetch(`/api/projects/${api._getProjectId()}/tasks/${taskId}/checkpoints/${cp.id}/approve`, {
+      const res = await fetch(`/api/projects/${_getProjectId()}/tasks/${taskId}/checkpoints/${cp.id}/approve`, {
         method: 'POST', headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({ resolved_by: 'user', note }),
       });
@@ -291,7 +291,7 @@ export default function CheckpointPanel({
   const [activeIdx, setActiveIdx] = useState(0);
 
   useEffect(() => {
-    const pid = api._getProjectId();
+    const pid = _getProjectId();
     if (!pid) return;
     fetch(`/api/projects/${pid}/tasks/${taskId}/checkpoints`)
       .then(r => r.json())