fix: audit v2 P0/P1 fixes (D1/D2/D3/D7/D9/D11/D14)

fix: comprehensive audit fixes - CRITICAL/HIGH/MEDIUM/LOW

Fix M-NEW-10: Use tokenizer encoding in _load_dataset instead of byte encoding

fix(v12): resolve 6 defects from v11 audit (F-NEW-6, S-NEW-5, M-NEW-5/6, MI-NEW-4/5/6)

fix(v11): resolve remaining 5 defects (S-NEW-1/2, M-NEW-2/3, MI-NEW-1)

fix(v10): resolve 5 fatal + 2 serious + 2 moderate + 2 minor defects

chore: replace author real name with GitHub username

fix: M2/S2/S4/M4 defect repairs

feat: 重写 DyQuant 量化代码，修复 thinking_dial.py 编码问题

feat: 完成 SBLA 注意力集成 + MVP 训练流程