Zhiwei flagged: '十条红线' but she counted 14. Real issues found:
- duplicate section numbers: two '三、' (验证闭环 + 自检体系矩阵),
two '四、' (开发流程 + 部署环境) -> renumbered 一~七 sequentially
- doc index said '含五条红线' (stale from v1) -> '含十条红线'
- F 小节 still used old Tier1/Tier2 framing -> aligned to L0/L1-L2
with pointer to the L0-L4 matrix section
- version bump v2.0 -> v2.1
Minimal edit: no content changes beyond numbering/consistency.
hmo
60dbb64f92