The "discover" orchestrator on the shared role substrate — counterpart to dev-crew (deliver) and brainstorm-panel (decide). Composes a task-fit team of coverage roles, partitions the space into non-overlapping angles, fans them out as parallel agents under one output contract, then dedups and adversarially verifies the merged, cited findings. Use when the user asks for something "comprehensive", "exhaustive", "as many as possible", "every X", or a "catalog/survey/landscape of Y" — any gathering task too large for one agent's coverage.
