Coliseum From Grain

Dispatches a composed set of assignment envelopes to domain-expert subagents in parallel, in a single message with multiple Agent tool calls. Enforces the no-pingpong gate via the pingpong-detector agent before any dispatch fires. Use when invoked by the coliseum-orchestrator as Phase 3; when envelopes are already composed and the next step is parallel execution; or when the user asks to "fan out" or "dispatch in parallel." Produces a dispatch log capturing what was sent, when, and where returns land.

Surfaces the parallel domain dimensions implicit in a dense or minimal prompt. Use when a user prompt is small on the surface but plainly implies multiple independent domains needing different expertise; when explicitly invoked by the coliseum-orchestrator skill as Phase 1; or when the user asks "what dimensions does this prompt encode" or "what axes does this break into." Produces a named dimension set where each dimension is independently executable and not a paraphrase of another.

Threads the four-phase grain-to-coliseum transformation — given a dense prompt (the "grain"), autonomously surfaces parallel dimensions, composes self-contained 9-section handoff envelopes, dispatches in parallel, and reconciles returns into a composed whole under a mechanical compression gate. Use when a small-surface prompt plainly implies large scope; when the user invokes "grain → coliseum," "autonomous work assignment," "no ping-pong," or "chunk and hand off." Declines protocol when the grain is not fan-out shaped (≥3 independent dimensions).

Wraps each surfaced dimension as a self-contained 9-section autonomous-work-assignment envelope — scope, context, success criteria, allowed tools, return format, handoff — all the recipient subagent needs to execute without coming back. Use when invoked by coliseum-orchestrator as Phase 2; when dimensions are named and the next step is to make each independently dispatchable; or when the user asks "compose this as an assignment." The no-pingpong gate validates each envelope before dispatch.

Merges the parallel returns from a dispatched coliseum into a single composed whole — alchemy, not concatenation. Resolves tensions between returns explicitly, surfaces any BLOCKED records as named gaps, ensures no return is silently discarded. Use when invoked by the coliseum-orchestrator as Phase 4; when all (or recorded) returns from a Phase-3 dispatch are in and the next step is composition; or when the user asks to "reconcile," "compose the returns," or "merge into a whole." Produces the final artifact — phase-4-composed-whole.md — that closes the grain-to-coliseum loop.