fix: merge _new province_names files, consolidate override events, remove one-time scripts

feat: 重建加载屏为 DXT1 并清理冗余事件与国家历史

fix(on_actions): 朝贡国不再套用或清除宗主颜色

fix(history): 王朝名直写中文并补齐王朝翻译工具链

refactor(province-names): drop entries shadowed by _new culture files

fix(localisation): translate all remaining ship names to Chinese

fix(localisation): translate remaining culture names

feat(integration): add merged EU4 content and localization

feat: establish Ab Integro 0.1.0 baseline