fix(editor): 语法检查按钮接真——原为原型期假实现(sleep 600ms恒报通过,用户删中括号仍提示成功);后端POST /strategy/file/{name}/check(compile()不落盘,SyntaxError返行号+消息,与保存的py_compile门禁同源);前端调真接口,错误显示「第N行:消息」红tag+toast,编辑即清;3新后端测试(删括号必报错) [vps]

frontend/src/views/strategy/Code.vue

@@ -23,6 +23,7 @@ const dirty = ref(false)
 const saving = ref(false)
 const checking = ref(false)
 const syntaxOk = ref<boolean | null>(null)
+const syntaxError = ref<string | null>(null)
 
 const active = computed(() => files.value.find((f) => f.name === activeName.value))
 
@@ -60,6 +61,7 @@ async function select(f: StrategyFile): Promise<void> {
   activeName.value = f.name
   dirty.value = false
   syntaxOk.value = null
+  syntaxError.value = null
   loadingCode.value = true
   try {
     const { data } = await apiClient.get<{ code: string }>(`/strategy/file/${f.name}`)
@@ -78,14 +80,29 @@ watch(code, () => {
   if (echoGrace) return
   dirty.value = true
   syntaxOk.value = null
+  syntaxError.value = null
 })
 
 async function onCheck(): Promise<void> {
+  if (!active.value) return
   checking.value = true
-  await new Promise((r) => setTimeout(r, 600)) // 模拟 py_compile
-  syntaxOk.value = true
-  checking.value = false
-  ElMessage.success('语法检查通过')
+  syntaxError.value = null
+  try {
+    const { data } = await apiClient.post<{ ok: boolean; error?: string; line?: number | null }>(
+      `/strategy/file/${activeName.value}/check`, { code: code.value })
+    if (data.ok) {
+      syntaxOk.value = true
+      ElMessage.success('语法检查通过')
+    } else {
+      syntaxOk.value = false
+      syntaxError.value = data.line != null ? `第 ${data.line} 行：${data.error ?? '语法错误'}` : (data.error ?? '语法错误')
+      ElMessage.error(syntaxError.value)
+    }
+  } catch (e) {
+    ElMessage.error(e instanceof Error ? e.message : '语法检查请求失败')
+  } finally {
+    checking.value = false
+  }
 }
 
 async function onSave(): Promise<void> {
@@ -162,6 +179,7 @@ function runBacktest(): void {
             <span class="path mono">{{ active?.dir }}{{ activeName }}</span>
             <span v-if="dirty" class="tag tag-dirty">未保存</span>
             <span v-if="syntaxOk" class="tag tag-ok mono">✓ 语法正确</span>
+            <span v-else-if="syntaxError" class="tag tag-err mono" :title="syntaxError">✗ {{ syntaxError }}</span>
           </div>
           <div class="bar-right">
             <span class="modified mono">{{ active?.modified }}</span>
@@ -298,6 +316,7 @@ function runBacktest(): void {
   font-family: var(--mono);
 }
 .tag-dirty { color: var(--lamp-warn); background: var(--amber-soft); border: 1px solid rgba(255, 176, 0, 0.3); }
+.tag-err { color: var(--lamp-err, #ff5470); background: rgba(255, 84, 112, 0.1); border: 1px solid rgba(255, 84, 112, 0.3); max-width: 46ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
 .tag-ok { color: var(--lamp-ok); background: rgba(46, 230, 138, 0.1); border: 1px solid rgba(46, 230, 138, 0.3); }
 
 .monaco-wrap {