v0.9.2

Safety release: declarative layout specs now fail closed before DiskPart scripts are emitted. Invalid or injection-shaped partition style, size, and drive-letter values return clear CLI errors before disk lookup or execution. Includes layout-diff tests for validation and normalization. SHA256: f18bf58bbc5ae280148e3902b9cd6692e1e1f705116017a6c8823e3273de6fda