- New docs/09-limits-and-performance.md: principles, all protection
layers, what players see, configuration reference, measurements,
tuning guide, monitoring and how to test
- Server chapter summarises the limits and links to chapter 9; circuit
breaker description and AI_MAX_INFLIGHT default corrected
- Architecture: new files in the layout, design decisions for load
handling; docs index lists chapter 9
- Protocol, AI and operations chapters link to chapter 9; test counts
- Root and component READMEs describe the limits and settings
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>