main
docs: update engine stats to 96, add unit tests for virtual_context
🚀 December 2025 Update: 20 engines, production infrastructure
docs: Complete documentation overhaul with full technical disclosure
docs: update engine count 120 to 121
fix: update engine count in COMPARISON.md (121/95 to 96)
fix: update all docs to 120 engines (README, engines-en, operations)
Sync: 17 engines, interactive diagram, docs update (Dec 2025)