Parallel delegation fan-out. The Claude session coordinates (on whatever Claude model is currently selected, e.g. Opus or Fable) while task units run in parallel on workers (never on the coordinator). Codex (`codex exec`, a separate abundant account) is the prioritized default; Sonnet is reserved fo
Parallel delegation fan-out. The Claude session coordinates (on whatever Claude model is currently selected, e.g. Opus or Fable) while task units run in parallel on workers (never on the coordinator). Codex (`codex exec`, a separate abundant account) is the prioritized default; Sonnet is reserved for units needing Claude-session-internal capabilities (MCP/email tools, Artifacts, cross-vendor web v