Aetheria/Assets/Editor/AetheriaUrpBootstrap.cs

using UnityEditor;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;

public static class AetheriaUrpBootstrap
{
    private const string SettingsFolder = "Assets/Settings/Rendering";
    private const string PipelineAssetPath = SettingsFolder + "/AetheriaURPAsset.asset";
    private const string RendererAssetPath = SettingsFolder + "/AetheriaUniversalRenderer.asset";

    [MenuItem("Aetheria/Rendering/Ensure URP Assets")]
    public static void EnsureUrpAssetsAndAssign()
    {
        EnsureFolder(SettingsFolder);

        var rendererData = AssetDatabase.LoadAssetAtPath<UniversalRendererData>(RendererAssetPath);
        if (rendererData == null)
        {
            rendererData = ScriptableObject.CreateInstance<UniversalRendererData>();
            AssetDatabase.CreateAsset(rendererData, RendererAssetPath);
        }

        var pipelineAsset = AssetDatabase.LoadAssetAtPath<UniversalRenderPipelineAsset>(PipelineAssetPath);
        if (pipelineAsset == null)
        {
            pipelineAsset = UniversalRenderPipelineAsset.Create(rendererData);
            AssetDatabase.CreateAsset(pipelineAsset, PipelineAssetPath);
        }

        GraphicsSettings.defaultRenderPipeline = pipelineAsset;
        QualitySettings.renderPipeline = pipelineAsset;

        EditorUtility.SetDirty(pipelineAsset);
        EditorUtility.SetDirty(rendererData);
        AssetDatabase.SaveAssets();
        AssetDatabase.Refresh();

        Debug.Log($"Aetheria URP asset assigned: {PipelineAssetPath}");
    }

    private static void EnsureFolder(string folderPath)
    {
        var parts = folderPath.Split('/');
        var current = parts[0];
        for (var i = 1; i < parts.Length; i++)
        {
            var next = current + "/" + parts[i];
            if (!AssetDatabase.IsValidFolder(next))
            {
                AssetDatabase.CreateFolder(current, parts[i]);
            }

            current = next;
        }
    }
}