I guess noone would ever pay any attention but this thing works wonders (even its sub-skills are very valuable). It turns Claude/Codex into persistently working machines with much higher output quality - and without need for a custom harness (which actually could improve token usage, quality and discipline but comes with maintenance costs).

With these skills Claude can work completely autonomously for days and weeks only interrupting the flow when some input is genuinely required from the user.

A sandbox and yolo mode are must.

The theory behind, unfortunately, doesn't have the recognition it deserves.