The pure per-footprint tag derivations for Layer-4 quarter generation (D-229),
ahead of the footprint-subdivision + assembly step:
- zone_type_for: the authored (ZoningType × economic_role × setting) → ZoneTypeId
selection (D-229 amendment) — planetary variants only, setting as a tweaker,
station-only ids never selected (Q-109); deterministic seed-pick, no empty slice.
- building_entry_class: zone × layout_mode × prosperity, with the D-217 Broken-band
U-curve degrade (Commercial→BreachOnly) and the Grid/Organic credential fork.
- construction_era: founding_age + prosperity + seed (D-229); old+Broken → Derelict.
- floor_extent: D-220 density-class floor ranges from density_pct + seed-jitter.
- initial_condition: D-217 frozen-amber condition from prosperity + era cause.
All integer-deterministic (D-010). 9 unit tests incl. the no-station-ids invariant.
Footprint subdivision + assign_building_tags assembly + block_tags wiring follow
(needs the footprint-packing model decided).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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