Add a standalone Profiler module (S3.profiler.json, disabled by default)
that hosts the in-game frame-time overlay previously owned by Physics
Optimizer. The overlay now adapts to whichever modules are enabled:
- Always shows: render + physics frame-time graph, timing report.
- Physics Optimizer section (if enabled): LOD fast-path and auto-freeze
quick-toggles with live stats, debug car count line.
- Mesh LOD section (if enabled): total tracked cars, loco/freight split,
per-LOD-level counts refreshed once per second.
PhysicsOptimizerModule retains only the Harmony patches and
CarDebugVisualizer; ShowOverlay/OverlayOpacity removed from PhysicsSettings.
MeshLodInjector gains GetLodStats() and GetLodLevel() for the overlay.
BBox material shader search now tries URP/Lit before Standard.
/rpf overlay toggle redirected to ProfilerOverlayGUI.Instance.
- Rename all MeshLodSettings public fields to camelCase (consistency
with every other settings class in the project).
- Replace the proxy-box renderer's borrowed car material with a shared
matte Standard material tinted to the car body albedo; cheaper at
LOD3 distances and responds correctly to scene lighting at night.
- Expose GetTrackedCounts() and display loco/freight breakdown next to
the Refresh Now button in the settings panel.
Map: per-track industry labels rendered via Dear ImGui on both the popout
and in-game overlay. Three zoom stages - per-track labels, merged same-name
clusters, and one-per-industry labels at wider zoom. Settings: font size
(min/max with zoom scaling), leader lines, parallel rotation, collision
spread, utility track filters (repair/diesel/loader/interchange), zoom
thresholds per category. C# runs a world-space AABB solver at rebuild so
offsets are rotation-invariant; native runs a per-frame screen-space
fine-tuning pass and draws leader lines.
Mesh LOD: new module skeleton with 4-level LOD group injected on
HandleModelsLoaded - three progressive renderer cull tiers (sorted by
bounds volume) plus a 12-tri proxy box at max distance. lodBias-corrected
distance-to-screenHeight conversion. Debounced live refresh on settings
change. Disabled by default.
