- Add token validation in executeInvocation to reject requests early
- Return clear Chinese error message: '未登录，请先执行 dws auth login'
- Include actionable hint and suggested command in error response
- Avoid wasting network resources on HTTP 400 from MCP gateway
Also includes:
- Add DWS_PERF_TIMING env for CLI execution timing analysis
- Add TimingCollector to track cmd_init, auth_token, mcp_call durations
Test changes:
- Add --token flag to tests that require authentication
- Add TestRuntimeRunnerRejectsUnauthenticatedRequest test case
修雨