from __future__ import annotations
from typing import List, Dict


def simple_co_simulation(domains: List[str], steps: int) -> List[Dict[str, float]]:
    """Tiny heuristic co-simulation across domains.

    Returns a list of domain-objective scores per step.
    """
    results: List[Dict[str, float]] = []
    for t in range(steps):
        row = {d: max(0.0, 1.0 * (steps - t) + i) for i, d in enumerate(domains)}
        results.append(row)
    return results