plan-and-execute orchestrates fresh subagents

This is a compelling answer to the context-window problem in agentic coding, though its serial design prioritizes control and continuity over maximum parallel speed.

• –Keeps the orchestrator focused on planning, scope tracking, and verification
• –Uses fresh workers to reduce context drift during long implementation runs
• –Shared baton preserves concise handoffs without copying entire work histories
• –Built-in verification and limited fix rounds create a practical quality gate
• –Token-budget heuristics and XML-style state passing remain experimental