One System, Two Languages: The Five Constraints Behind Aristotle v1.6's Architecture
TL;DR: Five constraints shaped the Watchdog-Intervention Bridge’s cross-language architecture. Watchdog has to intercept LLM tool calls synchronously, so it runs in TypeScript. Intervention has to reuse the existing reflection engine and rule system, so it stays in Python. The Bridge adds zero new infrastructure, so it uses subprocess. Communication can’t block every tool call, so batching replaces real-time streaming. Each decision was the least bad option under the circumstances. The last post covered what the Watchdog-Intervention Bridge does in Aristotle v1.6. This one is about why it looks the way it does. ...