From d112f4ea6bb10444450bb96917f78b4c0be12e38 Mon Sep 17 00:00:00 2001
From: Backend Agent <agent@xiaoxiajianji.com>
Date: Tue, 4 Aug 2026 17:17:34 +0800
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修复 useStep4Title/index.ts 中 prevAiAutoSelect 初始化为 true 时
useEffect 不触发生成的 bug。新增 isFirstMount ref 区分首次挂载
和后续开关切换，确保页面刷新后 aiAutoSelect=true 也能自动生成标题。

Fixes AI Code Review blocking issue on PR #1236
---
 .../src/pages/generate/hooks/useStep4Title/index.ts  | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/apps/web/src/pages/generate/hooks/useStep4Title/index.ts b/apps/web/src/pages/generate/hooks/useStep4Title/index.ts
index 8898bba53..3f6aaac81 100644
--- a/apps/web/src/pages/generate/hooks/useStep4Title/index.ts
+++ b/apps/web/src/pages/generate/hooks/useStep4Title/index.ts
@@ -38,11 +38,21 @@ export function useStep4Title({ titleSettings, onTitleSettingsChange }: UseStep4
   // 样式更新
   const styleUpdaters = useTitleStyleUpdaters({ titleSettings, onTitleSettingsChange })
 
-  // 追踪是否第一次渲染，避免初始加载时误触发
+  // 追踪 AI 自动选择开关的上一次值 & 是否首次挂载
   const prevAiAutoSelect = useRef(titleSettings.aiAutoSelect)
+  const isFirstMount = useRef(true)
 
   // 当 AI 自动选择开关打开时，自动生成/选择一个标题填入
+  // 首次挂载时如果开关已经是 true 且无标题，也需要触发
   useEffect(() => {
+    if (isFirstMount.current) {
+      isFirstMount.current = false
+      if (titleSettings.aiAutoSelect && !titleSettings.title) {
+        autoGenerateTitle()
+      }
+      prevAiAutoSelect.current = titleSettings.aiAutoSelect
+      return
+    }
     if (titleSettings.aiAutoSelect && !prevAiAutoSelect.current && !titleSettings.title) {
       autoGenerateTitle()
     }