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Tommaso BianchiandClaude Opus 4.8
15ea0a813f
Add named document variables (CadDocument::variables) and per-feature expression bindings (CadFeature::expr, field-name -> expression). On recompute(), variables are evaluated topologically (cycle detection), then each feature's expr entries are evaluated and written into its numeric fields before geometry runs. Self-contained shunting-yard evaluator (+ - * /, parens, unary minus, sqrt/abs/sin/cos/tan(deg)/min/max, pi). assign_field allow-lists the 33 dimension fields + pattern_count; unknown names error loudly. Additive: recipe stays v2 (fields appended to both cereal lists, golden fixture regenerated). MCP set_variable / set_feature_expr are pure additions. Suite 95 cases / 1440 assertions green. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01BVzKmX6Y1aEteit1HTXG4Q