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-2026-112546/CVE-2026-112546.swift

@@ -1,21 +1,8 @@
 // aud.hoa · AudioCodecs · APACHOADecoder::Initialize · CVE-2026-112546
-// 原语: OOB 读 · 系统进程 · tier 2
-// Primitive: OOB read · system process · tier 2
-//
-// [zh] HOA 空间音频系数越界读
-// mNumHOAcoeffs 由文件内的 hoa::CodecConfig 反序列化取得。既有检查仅拦下大于 122 的值，而 37 至 121 之间的取值会索引一个长度为 37 的数组。27.2
-// 将比较阈值改为 0x25。
-//
-// [en] HOA spatial audio coefficient out-of-bounds read
-// mNumHOAcoeffs is deserialised from the file's hoa::CodecConfig. The existing check only rejects
-// values above 122, while anything from 37 to 121 indexes an array of length 37. iOS 27.2 changes
-// the comparison threshold to 0x25.
-// ── 判别 / oracle ──
-// 系数上限来自 kMaxNumSCs_DynSelSCs4EachSB。这条要真正打进去需要 MPEG-H / 沉浸式音频文件，应用侧只能探到解码器是否可达。
-
+// HOA spatial audio coefficient out-of-bounds read
 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)] }
@@ -37,4 +24,3 @@ enum B {
 }
 
 
-