0.9.0 — Direct authoring and native lighting

Direct world authoring, geographic footprints and installed native lighting checks.

• Edit floors, rooms, outlines, walls, openings, stairs and registered game/mod objects directly in Game view, with signed basements and atomic undo.
• Import concave/courtyard building footprints and retain source geometry. Author curved roads/rivers, sidewalks, reversible ground-level bridge decks and original cardinal railway sprites.
• Export graphical game/vehicle zones, multi-cell model collisions, keyed native doors, authored light sources and registered procedural loot distributions. Shared world projections retain gameplay metadata and dependencies.
• Check the native light field entirely inside the editor using the installed LightingJNI library, with explicit sky/power inputs, scene and engine fingerprints, cancellation and stale-result protection. No game session is launched.
• Illustrated English installation and feature guides. Windows package includes .NET runtime; original game assets/libraries are not bundled.

Validation: Core 190/190, JavaScript 129/129, 18 authentic native-lighting fixtures, actual Chromium authoring/export/undo workflows, native door/light/vehicle API probes and independent native archive readback. Browser FBO/material shaders, model mesh shadows, live weather/switches and character playthrough are not reproduced. Railway artwork is cardinal; bridge decks are at ground level.