- Agent now uses mcp.NewAIClientByProvider() for claw402 provider, ensuring
x402 payment signing works correctly instead of generic HTTP client
- Added ReasoningContent field to Message/LLMResponse structs and wired
serialization/parsing so DeepSeek thinking models work in multi-turn
- Added Beta badge to Agent nav tab in HeaderBar
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>