import asyncio

async def orchestrate_parallel(tasks):
    """
    Run multiple tasks in parallel sandboxes
    """
    sessions = []

    # Create sandbox session for each task
    for task in tasks:
        session = await create_sandbox_session(task)
        sessions.append(session)

    # Execute all in parallel
    results = await asyncio.gather(*[
        session.execute() for session in sessions
    ])

    # Aggregate results
    return merge_results(results)


async def create_sandbox_session(task):
    """
    Create isolated sandbox for task
    """
    return {
        'task': task,
        'sandbox_id': generate_sandbox_id(),
        'repo': clone_repo(task.repo_url),
        'execute': lambda: run_in_sandbox(task)
    }

async def monitor_parallel_execution(sessions):
    """
    Monitor all sessions in real-time
    """
    while any(s.status == 'running' for s in sessions):
        for session in sessions:
            progress = await session.get_progress()
            print(f"{session.task.name}: {progress}%")

        await asyncio.sleep(1)

    return [s.result for s in sessions]

tasks = [
    {
        'name': 'fix-auth-bug',
        'repo': 'https://github.com/org/repo-a',
        'instructions': 'Fix authentication timeout'
    },
    {
        'name': 'update-deps',
        'repo': 'https://github.com/org/repo-b',
        'instructions': 'Update dependencies to latest'
    },
    {
        'name': 'add-tests',
        'repo': 'https://github.com/org/repo-c',
        'instructions': 'Add unit tests for API'
    }
]

# Run all in parallel
results = await orchestrate_parallel(tasks)

# Results available simultaneously
# Time: max(task_times) instead of sum(task_times)