docs(README): 更新 Dashboard 截图至 v0.4.0 版本;

🤖 Generated with [Claude Code](https://github.com/claude), [CodeX](https://openai.com), [Gemini](https://github.com/apps/gemini-code-assist)
Co-Authored-By: Aurelius Huang<threefish.ai@gmail.com>

Author: ThreeFish-AI

README.md

@@ -30,7 +30,7 @@ When you're deeply immersed in your coding "zone" with **Claude Code** (or any A
 ## 🌟 Core Features
 
 <div align="center">
-    <img src="assets/dashboard-v0.2.4.png">
+    <img src="assets/dashboard-v0.4.0.png">
 </div>
 
 - **⛓️ N-tier Chained Failover**: Autonomous descending sequence, supporting Claude's official plans, as well as Coding Plans from GitHub Copilot, Google Antigravity, Z AI, MiniMax, Alibaba Qwen, Xiaomi, Kimi, Doubao, etc.

assets/dashboard-v0.2.4.png

@@ -30,7 +30,7 @@
 ## 🌟 核心特性 (Core Features)
 
 <div align="center">
-    <img src="../../assets/dashboard-v0.2.4.png">
+    <img src="../../assets/dashboard-v0.4.0.png">
 </div>
 
 - **⛓️ N-tier 链式故障转移 (Failover)**：自主降序序列，支持 Claude 官方 Plans，以及 GitHub Copilot、Google Antigravity、智谱、MiniMax、阿里千问、小米、Kimi、豆包等的 Coding Plan。