render3d: the terrain's questions never page - ter_h and ter_o read a resident tile in place and any other through the file scratch (heights and now the photograph, four tiles each, sized when the tiles open, forgotten when they close), so terrain_height, _smooth, terrain_ortho, the chunk heightfields, ground_fill, grass, water and shadow no longer take slots or move the clock. Only the loaders page: tp_fill reads through tt_h_load / tt_n_load / tt_o_load, and terrain_tiles_prefetch as before. terrain_height_file is now terrain_height, kept as the name callers wrote against. No answer changes: every read was already the whole copy's texel. tests/height_file_test: heights and photograph equal the texels written, resident or not; a whole-map sweep of the questions, and a ground layer's fill over the map (a one-layer LGD2 written in the test), leave the slots, their contents, the clock and the read counts unchanged

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

packages/ludic.render3d/terrain_ltt2_read.ludic

@@ -55,6 +55,7 @@ function tt_pools(render3d_st: mut Render3dState, n: int, side: int) -> void {
   if render3d_st.tt_tile_in == null { render3d_st.tt_tile_in = words(TT_SLOTS);  render3d_st.tt_ref = words(TT_SLOTS) }
   for s in 0 .. TT_SLOTS { render3d_st.tt_tile_in[s] = -1;  render3d_st.tt_ref[s] = 0 }
   render3d_st.tt_hand = 0
+  tf_size(render3d_st, side)
 }
 
 # tile t's heights, normals and photograph decoded into slot s: exactly the values ltt2_write put back