数据结构优化

client/src/components/CodePreview.vue

@@ -347,7 +347,7 @@ const runCode = async () => {
     doc.write(loadingTemplate)
     
     try {
-      const response = await fetch('http://localhost:8081/api/run', {
+      const response = await fetch('/api/run', {
         method: 'POST',
         headers: {
           'Content-Type': 'application/json'

client/src/components/ImageUploader.vue

@@ -115,7 +115,7 @@ const uploadFile = async (file: File) => {
     formData.append('storageType', 'local')
 
     const token = localStorage.getItem('token')
-    const response = await fetch('http://localhost:8081/api/admin/attachments/upload', {
+    const response = await fetch('/api/admin/attachments/upload', {
       method: 'POST',
       headers: {
         ...(token ? { Authorization: `Bearer ${token}` } : {})

client/src/components/StarBackground.vue

@@ -95,12 +95,16 @@ const drawStars = () => {
       }
     }
 
-    ctx.globalAlpha = star.alpha
-    ctx.beginPath()
-    ctx.arc(star.x, star.y, star.radius, 0, Math.PI * 2)
-    ctx.fill()
+    if (ctx) {
+      ctx.globalAlpha = star.alpha
+      ctx.beginPath()
+      ctx.arc(star.x, star.y, star.radius, 0, Math.PI * 2)
+      ctx.fill()
+    }
   })
-  ctx.globalAlpha = 1
+  if (ctx) {
+    ctx.globalAlpha = 1
+  }
 }
 
 // 生成流星