[Feature]: session title generation

[gusye1234]

Feature Description

Acontext should have a auto-generated session title, and can be used from SDK

Proposed API/Interface

# Python SDK
# Your proposed API here
client.session.get_display_title(session_id='xxxx')

Impact Component/Area

Which part of Acontext would this feature affect?

• Client SDK (Python)
• Client SDK (TypeScript)
• Core Service (Python)
• API Server (Go)
• UI/Dashboard (Next.js)
• CLI Tool
• Documentation
• Other (please specify)

[riturajFi]

Hi @gusye1234 kindly assign this to me to avoid double work by someone else