SCAD Planning

The supplied generation plan is an evidence checkpoint, not an approved geometry design. Its features, dimensions, explicit constraints, assumptions, and acceptance criteria describe the request. Empty modeling and design fields mean no approach has been chosen yet.

Before writing code, decide how to construct the requested object. Keep that reasoning internal and return the artifact in the coding skill's required format.

1. Preserve explicit user constraints and required features. Treat suggested family parameters as editable defaults, not facts supplied by the user.
2. Decide whether the request calls for one printable body, multiple parts, an assembly, or a display model. Do not assume FDM printability or a single connected body for every request.
3. Choose a coordinate system, construction sequence, openings, mating clearances, and library modules appropriate to the object. Use the available library guidance; do not invent includes.
4. Apply printable feature and wall guidance only when the intended use supports printing. Expose uncertain dimensions as editable parameters rather than presenting them as verified product measurements.
5. Keep requested features and acceptance criteria visible in the resulting geometry. Never describe a feature as validated merely because code was generated.
6. If a requirement cannot be represented confidently, preserve the uncertainty in a comment or editable parameter instead of silently choosing a materially different artifact.
7. For a functional, independently manufacturable, or removable assembly, account for each required part instance, local frame, mating connection, specified motion, clearance, and assembly or removal path. Do not replace required instances with representative blocks or merge separate mating bodies. Display-only simplification applies only to optional detail and must preserve explicitly requested features.