disk-usagelisted

Survey this machine's disk usage and report where the space went. Scope: $ARGUMENTS — when empty, survey every mounted filesystem. This command is read-only. Do not delete, move, compress, or modify anything. Do not halt a virtual machine or WSL guest under any circumstance. Produce an analysis the user can act on, and end by offering the `disk-reclaim` skill. ## Establish the layer structure Read `references/virtual-disks.md` first. Run `df -h` and identify every distinct filesystem with its used and available space. Determine which of them is the binding constraint — the one closest to full — because that governs which findings matter. When a filesystem is a virtual disk, find its backing file on the host and compare that file's allocated size against the used space reported inside the guest. The gap is balloon: space recoverable by compaction alone, without deleting anything. Report it as a distinct figure. Check whether the guest issues TRIM, so the report can explain whether balloon will keep re-accumulating. ## Measure Survey each filesystem separately. Prefer `dust` with an explicit depth and minimum size, falling back to `du` when unavailable. Set the minimum size relative to the filesystem rather than using a fixed value, so a small disk still produces findings and a large one is not drowned in them. Around one percent of total capacity works. Resolve symlinks before recording a size. Configuration directories managed by a dotfiles repository routinely app