chore: 版本号 0.14.6 → 0.14.7

fix: onNewIteration 只在 THINKING 状态调用，消除每状态切换的冗余触发
fix: renderMessages 全量清空重建，去掉增量 diff 的边界 bug
fix: 空消息跳过增加 think 判断，纯思考卡片不再被吞掉
fix: updateMessageToolRecord 改为空函数，工具卡片统一由 onDone 挂载

README.md

@@ -14,7 +14,7 @@
 </p>
 
 <p align="center">
-  <img src="https://img.shields.io/badge/version-v0.14.6-E8734A?style=flat-square" alt="version">
+  <img src="https://img.shields.io/badge/version-v0.14.7-E8734A?style=flat-square" alt="version">
   <img src="https://img.shields.io/badge/electron-33+-47848F?style=flat-square&logo=electron" alt="electron">
   <img src="https://img.shields.io/badge/typescript-5.7+-3178C6?style=flat-square&logo=typescript" alt="typescript">
   <img src="https://img.shields.io/badge/license-MIT-green?style=flat-square" alt="license">
@@ -253,7 +253,7 @@ npm start
 ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/ npm run dist
 ```
 
-产出：`release/Metona Ollama Setup v0.14.6.exe`
+产出：`release/Metona Ollama Setup v0.14.7.exe`
 
 ## 🛠️ 常用命令
 
@@ -501,7 +501,7 @@ npm start
 ELECTRON_MIRROR=https://npmmirror.com/mirrors/electron/ npm run dist
 ```
 
-Output: `release/Metona Ollama Setup v0.14.6.exe`
+Output: `release/Metona Ollama Setup v0.14.7.exe`
 
 ## 🛠️ Common Commands