Parallel Dev Cycle

Multi-agent parallel development cycle using Codex subagent pattern with four specialized workers:

1. Requirements Analysis & Extension (RA) - Requirement analysis and self-enhancement
2. Exploration & Planning (EP) - Codebase exploration and implementation planning
3. Code Development (CD) - Code development with debug strategy support
4. Validation & Archival Summary (VAS) - Validation and archival summary

Orchestration logic (phase management, state updates, feedback coordination) runs inline in the main flow — no separate orchestrator agent is spawned. Only 4 worker agents are allocated.

Each agent maintains one main document (e.g., requirements.md, plan.json, implementation.md) that is completely rewritten per iteration, plus auxiliary logs (changes.log, debug-log.ndjson) that are append-only.

Architecture Overview