Remove d100 from the dice pool builder (percentile section is
unaffected). Switch die buttons, pool display, and result output
to JetBrains Mono for mechanical/numeric readability, and lay out
the pool builder buttons in a fixed 7-column grid to match the
remaining die count.
Ports the four core Mythic GME tools from reference/index.html into
the modular structure. Fate Check and Random Event Check preserve
the exact probability matrix and roll logic, now reading chaos
factor live from the active campaign instead of local state. Meaning
and UNE tables are served from data/tables/ via a new tables route.
UNE motivation uses the published verb+noun tables instead of the
reference's flattened phrase list. Dice (pool builder, custom roll,
percentile, ability score) is ported verbatim as pure frontend logic.