Wire Protocol Updates:
- Fix wireProtocolVersion check from "2" to "1.1"
- Rename ToolCall to ToolCallRequest with backwards-compatible alias
- Separate ToolCall (event) and ToolCallRequest (request) types
- Add required fields to ToolResultReturnValue

Examples:
- Fix go.mod replace paths for new directory structure

Tests:
- Add TestE2E_RumorBuster to validate tool usage with web search
- Update unit tests and mock_kimi for protocol 1.1 changes