Adds BaseClass(RuneTemplate): attributes from rune_attr_adj, health/mana/stamina
from rune_health/mana/stamina, token = SBStringHash(rune_sub_type), description
from rune_dsc. Skills, powers and effects still load from the DB by rune id
(tasks 2.8, 2.9, 2.10). The static_rune_baseclass comparator now checks every
field against a JSON-built BaseClass.
Offline parity (scripts/p21.py, 4 rows vs the CLASS runes with
rune_is_standard_character_creation = 2500-2503): 0 differences except
description, which is '' in the DB and the class blurb in rune_dsc. Nothing
reads BaseClass.getDescription().
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>