cdsl-cad/backend/agent/skills/cad-engine/references/part-skills/bridge/functional-symmetric-layout.md

CDSL Bridge: Symmetric Feature Layout

• Define a centerline, plane, or datum before placing symmetric features.
• Use pattern_mirror for a mirrored source feature and pattern_linear for regular rows.
• The source feature must execute first and its transformed selectors/frames must remain uniquely resolvable.
• Never create symmetry by independently guessed coordinates when a pattern contract is available.