Help the user set up, configure, and debug post-processing effects using URP's Volume framework. Goal: The user should have a working visual result with zero console errors after setup. 0. Prerequisite: an Editor you can run C# in Volume profiles, , and the camera's post-processing flags are Editor/runtime object state — the checks and edits below all run C# inside a live Editor. The skill owns getting you there — installing the CLI, confirming a connected Editor, adding the project's package, telling a genuinely absent Editor apart from one stuck in Safe Mode, and discovering the Editor's co…