5aad77bd61
- Add context limit rationale to system_requirements.md with memory formula - Update SKILL.md to include XReg/covariates in description and usage sections - Add dataset-aware memory estimation to check_system.py with new CLI args - Document memory estimation in api_reference.md with Mermaid diagram - Add dataset preflight section to SKILL.md with examples Resolves review comments about: - How context limits (512/1024) were determined - Including XReg mode description in skill documentation Bonus enhancement: Dataset preflight checking prevents OOM before loading data.