derive_moisture_q matched hydrosphere on 'ocean'/'rivers'/'subsurface', but the
real bodies.hydrosphere vocab in systems.db is dominated by 'liquid_water' (175
bodies) — so most surface-water worlds fell to the '_ => 30' default, propagating
wrong precipitation_class / glaciation_grade / vegetation. Same root cause as
D-240 (code keyed on a vocab the data doesn't use).
Align the match to the canonical vocab, grouped by available surface moisture
(mirrors the [hydrosphere_maritime] table from T-1033): surface liquid
(liquid_water/ocean/ocean-coastal/extensive) -> 80; rivers/rivers-lakes/moderate
-> 55; ice -> 20; subsurface_liquid -> 15; subsurface/subsurface_ice -> 10;
minimal/trace -> 5; none -> 0. Add a liquid_water regression test and broaden the
clamp sweep to the full vocabulary.
Closes T-1034 — last open ticket under epic T-974 (Atlas-to-tile derivation),
which is now complete.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
jpmschweitzerandClaude Opus 4.8
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