Cross-runtime Orchestrator/Executor — Fable/Opus writes a goal file, GPT-5.6 Sol (codex) or a Sonnet subagent executes it, Fable/Opus verifies against acceptance criteria before reporting done.
Cross-runtime Orchestrator/Executor — Fable/Opus writes a goal file, GPT-5.6 Sol (codex) or a Sonnet subagent executes it, Fable/Opus verifies against acceptance criteria before reporting done.