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-2026-112488/CVE-2026-112488.swift

@@ -1,22 +1,8 @@
 // iio.tiff.direntry · ImageIO · TIFFReadDirEntry*Array · CVE-2026-112488
-// 原语: OOB 写 · 进程内 · tier 2
-// Primitive: OOB write · in-process · tier 2
-//
-// [zh] TIFF 目录项分配 32 位截断
-// 输出分配的大小以 lsl w0, count, #log2(elemsize) 计算，属 32 位截断。当 count = 0x20000000 且元素宽度为 8 字节时，分配结果回绕为 0，
-// 而逐元素转换循环仍执行 count 次写入。27.2 改用 _TIFFCheckMalloc_type 的 64 位检查尺寸。
-//
-// [en] TIFF directory entry allocation 32-bit truncation
-// The output allocation size is computed as lsl w0, count, #log2(elemsize) — a 32-bit truncation.
-// With count = 0x20000000 and 8-byte elements the allocation wraps to zero while the per-element
-// conversion loop still performs count writes. iOS 27.2 switches to _TIFFCheckMalloc_type's 64-bit
-// checked size.
-// ── 判别 / oracle ──
-// 该原语的成立条件是 count×elemsize 跨越 2^32。本模块以一个 0x20000000 的 SBYTE 数组触发分配器，观察其返回空指针（干净拒绝）还是返回远小于请求的块（截断成立）。
-
+// TIFF directory entry allocation 32-bit truncation
 import Foundation
 
-// ── byte helpers — verbatim from Cinder27 Sources/Kit.swift ──
+// ── byte helpers (from Cinder27 Sources/Kit.swift) ──
 enum B {
     static func be16(_ v: UInt16) -> [UInt8] { [UInt8(v >> 8 & 0xff), UInt8(v & 0xff)] }
     static func le16(_ v: UInt16) -> [UInt8] { [UInt8(v & 0xff), UInt8(v >> 8 & 0xff)] }
@@ -38,4 +24,3 @@ enum B {
 }
 
 
-