Increase coverage for a Meticulous project

Run meticulous-cli-update first if you haven't already this conversation (it also covers authentication and project selection).

What you deliver

Two separate outputs, both expected — neither substitutes for the other:

1. One or more test runs from newly recorded sessions that provably extend coverage. "Provably" means a comparison against the baseline naming the files whose coverage went up, and by how much (Step 7). If a target turns out not to be coverable, say so rather than padding the list.
2. A PR proposing .meticulousignore changes. Only include paths — most often whole directories — that you are confident are not coverable at all. Anything you merely failed to reach in one sitting does not belong there; leave it out and mention it in the PR description instead.

Before you start: run this on main, with a clean tree