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-2026-112485/CVE-2026-112485.py

@@ -1,23 +1,4 @@
 #!/usr/bin/env python3
-# mdl.usda · Model I/O · libusd_ms · CVE-2026-112485
-# 原语: OOB 读 · 进程内 | Primitive: OOB read · in-process
-#
-# [zh] USDA 声明嵌套深度
-# Model I/O 的修复载体为 libusd_ms 24.1.30 → 24.1.32：经 64 位检查的图像分配、Ptex log2 与页保护、USDA 声明嵌套上限、SdfZipFile
-# 尺寸检查。ModelIO.dylib 自身不含任何修复。
-#
-# [en] USDA declaration nesting depth
-# The fix carrier for Model I/O is libusd_ms 24.1.30 → 24.1.32: 64-bit checked image allocation,
-# Ptex log2 and page guards, a USDA declaration nesting cap, and SdfZipFile size checks. ModelIO.dylib
-# itself carries none of the fix.
-#
-# 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-2026-112485.swift
-# triggers (run closures) & non-seed builders: CVE-2026-112485.swift in this folder
-
-
-
-# --------------------------------------------------------------------------- USDA nesting
 def build_usda(depth=2000):
     """libusd_ms 24.1.30 caps USDA declaration nesting in 24.1.32; 27.0 recurses unbounded."""
     head = "#usda 1.0\n\n"