v2.0 — 31 C POC twins + harness fixes

- 31 C POC files, one per CVE folder: full seed construction + trigger +
  main(), self-contained, no app dependency. All compile clean with
  clang -O2 -Wall (zero warnings) on macOS arm64; each has a recorded
  oracle on this host.
- CMGetDMVersionLevelFromRPU ABI pinned by disassembly: macOS export is
  (CFDataRef), the Swift POC drives the 4-arg iOS surface — this is the
  mechanism behind the cm.rpu death oracle on the simulator build.
- Harness fixes: glyphCount guard, MachOInspector size guard, ModTools
  clamp, DeviceModel iPhone19,7, GPTPayload clamps, Gate patch display.
- POC comments rewritten English-only (31 swift + arc.rr + 5 py).
- README (en/zh): C twin column, .c anatomy section, compile/run
  examples, C oracle verification status.
- Dead if-let binding removed from Identity summary; v2.0 build 3.

CVE-2026-112683/CVE-2026-112683.py

@@ -1,20 +1,4 @@
 #!/usr/bin/env python3
-# font.cff · FontParser · charstring 解释器 · CVE-2026-112683
-# 原语: OOB 写 · 进程内 | Primitive: OOB write · in-process
-#
-# [zh] CFF Type2 charstring 操作数栈溢出
-# Type2 charstring 解释器的操作数栈为固定 48 项数组。27.0 仅在 pop 路径检查计数，push 路径不做检查。27.2 补入 Push/Pop 两道栈保护，
-# 并将扫描暂存区的 32 位乘法改为 64 位，同时修正了符号扩展指针。
-#
-# [en] CFF Type2 charstring operand stack overflow
-# The Type2 charstring interpreter's operand stack is a fixed 48-entry array. On 27.0 only the
-# pop path checks the count; the push path does not. iOS 27.2 adds Push/Pop stack guards, widens
-# the scan scratch area's 32-bit multiply to 64-bit, and fixes a sign-extended pointer.
-#
-# 种子生成 — verbatim from Cinder27/scripts/gen_seeds.py
-# 触发器（run 闭包）与非种子构建器: 同目录 CVE-2026-112683.swift
-# triggers (run closures) & non-seed builders: CVE-2026-112683.swift in this folder
-
 import struct