-- Saved multi-topology comparison runs (the Topologies "Compare" view). The
-- full result — per-topology metrics, leaderboard, and Pareto flags — is stored
-- as JSONB so the schema stays stable as the comparison shape evolves.
CREATE TABLE topology_runs (
    id           UUID PRIMARY KEY,
    workspace_id UUID NOT NULL REFERENCES workspaces (id) ON DELETE CASCADE,
    task         TEXT NOT NULL,
    comparison   JSONB NOT NULL,
    created_at   TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX topology_runs_workspace_idx
    ON topology_runs (workspace_id, created_at DESC);