fix: comprehensive audit fixes - Thinking Dial unification, deployment scripts, README, bilingual filter, data download

feat: setup.py, quick-start guide, architecture doc, model registry

fix(v9): resolve 3 fatal + 1 serious + 1 moderate defects from external audit

fix: v6 audit - all critical/severe/moderate/minor defects

fix: F1 mask double-conversion NaN, F2 think token old format, S3 vocab sync, S1/S2 TODO, N1-N5

fix: v5 remove empty tokenizer.json, unify think tokens, integrate tokenizer into training pipeline

fix: v3 comprehensive defect repair

fix: 修复 S1-S4/M2-M4 缺陷，规范化工程结构

feat: 完成 SBLA 注意力集成 + MVP 训练流程

feat: 初始化 Fusion 项目 - 六边形开源大模型