Reframe routing as ONE topic on two axes (method x space); add unifying experiment: emergent GIUH, what space buys, no unique UH for nonlinear KW

Module 8a (channel network routing): cell-to-cell KW on Y network, topological sweep, wave profile + confluence, EF5 mechanics anchored

Module 7 (routing deep-dive): FIR/IIR/PDE schools, 5 editable versions, nonlinearity probe (5 vs 50mm pulses), EF5 KW Newton scheme, live NSE

Module 6 (response reservoirs): 4 editable versions, live NSE vs obs, log-scale baseflow view, pulse-response IUH panel

Module 5 (runoff generation): 4 editable versions (bucket/HBV-beta/CREST-VIC/SCS-CN) with per-version sliders, live soil state + runoff plots

Restructure: multi-page interactive course (nav home + per-module pages with editable/runnable code, version tabs w/ CREST tag, live plots)

Module 2 (PET): GivenPET/Hamon/Hargreaves comparison + KE scaling; advance pointer to soil water balance

Module 1 (Forcing): spatial aggregation methods + cal/val split; advance pointer to PET

Add Hesperange site section + catchment/outlet schematic

Fix glyph rendering (HTML entities), add bilingual glossary + SVG diagrams

Module 0-1: static Pyodide app (water balance, forcing, reservoir playground)

initial commit