economy.gd:65-79 computed gold IN GDScript (building-effect sum, gold-per-pop
multiply, gold-from-mines loop, percent sum) before the GdEconomy call —
violating "GDScript is presentation only". Moved all of it into mc-economy:
- New CityGoldRaw (per-building effect VALUES + population + mine_count) and
aggregate_city_gold() that does the building-sum + per-pop×pop + per-mine×mines
+ percent composition. Pure arithmetic, cargo-tested.
- GdEconomy FFI now deserializes the raw shape and aggregates before process_gold.
- economy.gd reduced to data extraction: _collect_effect_ints/_floats (no summing)
+ mine count; zero gold arithmetic. gdlint clean.
Verified: 3 new mc-economy cargo tests (sums/per-pop+per-mine/percent+e2e);
GdEconomy bridge GUT tests migrated to the raw shape; mc-economy green; dylib
rebuilt + canonical GUT 747/0.
p3-24 bullet 1 done; stays partial — remaining phases: happiness assembly→
mc-happiness, climate HP-loss→Rust, orchestration (stretch).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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