What problem does it solve? It helps non-technical users free up disk space, fix slow boot and system lag, and improve game frame rates on Windows and macOS without risking system damage or personal file loss. ## Core Features & Use Cases - Risk-tiered operations (L0-L3): Read-only scans run freely, cache cleanup requires one confirmation, system modifications require per-item consent with rollback scripts, and dangerous operations (bcdedit, disabling Defender, deleting personal files) are always refused. - Ready-made scripts: win_scan.ps1 for read-only diagnostics, win_clean.ps1 with -DryRun preview for safe cleanup, win_game_boost.ps1 with automatic restore points and undo scripts, and mac_clean.sh defaulting to dry-run mode. - Use Case: A user says their C drive is full and games stutter. The skill scans the system, reports that 12GB of temporary files and update caches can be freed, cleans them after confirmation, then applies reversible game optimizations with an undo script on the desktop. ## Quick Start Ask the assistant to scan your computer for cleanable junk files and performance issues, review the space estimate, and confirm before anything is deleted.