Open-source PineScript v6 backtest engine that reproduces TradingView trade-for-trade: 4,189/4,190 probes excellent-or-strong (312 open corpus + 413 community scripts on 15 markets), 2.8M trades matched. C++17, stable C ABI, Apache-2.0.
A semantic, transactional, replayable MCP control plane that lets autonomous AI agents operate Dwarf Fortress as a long-lived civilization. Safe-Rust phase-0B scaffold: MVCC world state, witnessed semantic plans, evidence-backed effects, deterministic replay.