zones.gd builders on the existing schema: heat + radio elements, thermal
slug + radio beacon gadgets, wax seal, order-chain core igniter, growth
vine (water then daylight), cross-zone cascade (reactor melts hydro ice
wall -> melt pool feeds the mains), through-wall resonator, sealed
bridge (opens 3/3 systems), core-donation ending + PORT 00 kiosk tease.
Each zone in its acquired-brand Flux textures. Integration test now
plays the entire ship: 35 checks passing.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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