v0.4.0

What's Changed

• Delegate LLM tracing to AgentScope's built-in @trace_llm by @ekzhu in #229
• handle backtest timeout by @cyruszhang in #238
• update claude.md by @cyruszhang in #239
• ci: add Claude Code GitHub workflows by @cyruszhang in #243
• Feat: New scoringsystem, add prediction broker by @1mycell in #241
• world_cup: FIFA soccer betting scenario boilerplate by @cyruszhang in #242
• Improve external betting clarity and World Cup support by @ekzhu in #246
• Bump dojozero and dojozero-client to 0.4.0 by @ekzhu in #247

Full Changelog: v0.3.0...v0.4.0