[FEATURE] Resume session list should show the last message snippet, not the first.

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Resume session list should show the last message snippet, not the first. 人记住的是最后聊到哪，不是最开始说了什么

Proposed Solution

人记住的是最后聊到哪，不是最开始说了什么
Resume session list should show the last message
snippet, not the first.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_