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-2026-112625/CVE-2026-112625.swift

@@ -1,25 +1,9 @@
 // iio.ktx2 · ImageIO · KTX2ReadPlugin · CVE-2026-112625
-// 原语: 整数溢出 · 进程内 · tier 2
-// Primitive: integer overflow · in-process · tier 2
-//
-// [zh] KTX2 维度/层级尺寸运算
-// KTX/KTX2 的层级字节数与块数运算缺少 64 位 umull/umulh 保护，且既有检查所依据的量本身是错的（使用 channels 而非源 bpp）。27.2 增加 \"image
-// dimensions overflow\" 与 \"expected %llu bytes\" 两道闸门。
-//
-// [en] KTX2 dimension and level size arithmetic
-// KTX/KTX2 level byte counts and block counts lack 64-bit umull/umulh protection, and the existing
-// check is keyed on the wrong quantity (channels rather than source bpp). iOS 27.2 adds "image dimensions
-// overflow" and "expected %llu bytes" gates.
-// ── 判别 / oracle ──
-// 维度 0xFFFF×0xFFFF，层级索引声明 64 字节。
-//  变体 iio.pvr: PVR 位深低于通道位和
-//
-// 种子构建器（python，可直接运行）: CVE-2026-112625/CVE-2026-112625.py
-// runnable python seed builder: CVE-2026-112625/CVE-2026-112625.py
-
+// KTX2 dimension and level size arithmetic
+// Standalone builder: CVE-2026-112625.py
 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)] }
@@ -40,20 +24,4 @@ enum B {
     static func ascii(_ s: String) -> [UInt8] { Array(s.utf8) }
 }
 
-/*
-// iio.pvr · ImageIO · PVRReadPlugin::initialize · CVE-2026-112625
-// 原语: 整数溢出 · 进程内 · tier 3
-// Primitive: integer overflow · in-process · tier 3
-//
-// [zh] PVR 位深低于通道位和
-// 各通道位数之间的相互匹配检查早已存在，但缺少 bitsPerPixel 相对通道位和的下界比较。27.2 补入 \"_bitsPerPixel %d is too small for 4 channels
-// of %d bits\"。
-//
-// [en] PVR bits-per-pixel below the channel bit sum
-// The mutual consistency check between channel bit widths has always been present, but there is no
-// lower bound comparing bitsPerPixel against the sum of channel bits. iOS 27.2 adds "_bitsPerPixel
-// %d is too small for 4 channels of %d bits".
-*/
-
-