Terrain was uploaded once at game start and treated as static — water
nukes (land → water conversion) mutated the sim's terrain bytes but
the rendered terrain stayed dry.
Plumbed a delta path: TerrainPass and RailroadPass each get
applyTerrainDelta(refs, bytes), Renderer + GameView forward, and
WebGLFrameBuilder pushes each tick from gameView.recentlyUpdatedTerrainTiles().
Per-tile encoding is shared via the new encodeTerrainTile helper in
ColorUtils so the startup full-map build and the per-tile delta updates
can't drift.
InputHandler still emits AlternateViewEvent on space down/up, and the
renderer still has setAltView. The bridge between them lived in
MapInteraction's applyAltView, which got deleted with the rest of
MapInteraction — nothing was wiring the event to the view anymore.
Expose view.setAltView and have ClientGameRunner subscribe.
The render/ tree was the only place in the client still using kebab-case
filenames. Brings ~80 files in line with the rest of src/client/
(BuildPreviewController, TransformHandler, etc.). Directories kept as
they were (name-pass/, fx-pass/, passes/, utils/, debug/) since the
codebase already mixes those.
Two collisions surfaced and got resolved: render/types/ is a directory,
not a file, so its imports kept the lowercase form; and the sed pass
incidentally normalized core/pathfinding imports, which had to be
reverted since that file is actually lowercase on disk despite some
imports having referenced it as ./Types under macOS case-insensitive
resolution.
evanpelle