Pi Coding Agent adds subagents, keeps context lean

Pi Coding Agent’s shift toward subagents is a direct strike against the "context saturation" that plagues feature-heavy coding assistants. By isolating specialized tasks into subprocesses, it maintains its minimalist philosophy while scaling to handle massive refactors. Parallel and chain execution modes enable high-speed codebase audits and sequential engineering loops, reinforcing a "harness-first" mentality that prioritizes developer control and signals a move toward composable AI developer tools.