Configuration files

Grid Screen resolves its configuration directory as:

$XDG_CONFIG_HOME/grid-screen

If XDG_CONFIG_HOME is unset, it uses:

$HOME/.config/grid-screen

The directory is created with mode 0700. Settings and layouts are stored in settings.json and layouts.json; after a successful write, each file is set to mode 0600.

Writes use a temporary file, read-back validation, and rename. Existing settings or layout files are copied to numbered backups, retaining up to five generations. The schema version is currently 1; older configurations load with a warning.

layouts.json is seeded with built-in layouts only when it is empty. Existing layouts are not replaced.