Tyre's carrier ruling: rivers ride the EXISTING whole-body layer1 field (no new wire field, neither ceiling touched); per-rung refinement is client-side class filtering (river_class quantized from flow accumulation — the one additive server change); discrete-geometry-vs- continuous-field carrier rule established for wave 2. D-226 note added on the rivers-ladder branch. Si's audit: skeleton is 512x256 heightmap- resolution dot data (~76 km/cell) — planetary courses real now, sub- heightmap course geometry named as T-1170, labels split to T-1169 (three dormant pieces, not free). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>