v0.6.9: Cursor measures deletes in the open project

Cursor sometimes sends an empty working folder with a shell command. The hook now falls back to the open project, so a held
m -rf build\ shows how many files it would delete (and pilot stats can report it).

Install this version (0.6.9)

Windows (PowerShell):

$env:SQUIDBRAKE_VERSION="0.6.9"; irm https://pilots.squidbrake.com/install.ps1 | iex

macOS / Linux:

curl -fsSL https://pilots.squidbrake.com/install.sh | SQUIDBRAKE_VERSION=0.6.9 sh

With pip: pip install squidbrake==0.6.9. Docker: docker pull ghcr.io/batrapulkit/squidbrake:0.6.9

Running the line again without SQUIDBRAKE_VERSION goes back to the newest. Every version:
https://github.com/batrapulkit/squidbrake/releases