Add detailed root cause analysis for Windows and Linux CI build failures.
Key findings:
- gRPC version 1.75.1 has MSVC compilation errors on Windows
- CPM configuration missing Windows version override logic
- Long gRPC build times (30-40 min) causing potential timeouts
- CI preset forces gRPC build even though it's optional
Recommended solution: Use platform-specific CI presets with gRPC disabled
to reduce build times from 40 min to 5-10 min and eliminate errors.
Document includes:
- Detailed root cause analysis
- Multiple solution options with code examples
- 3-phase implementation plan
- Testing procedures and risk assessment
