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-2026-112633/CVE-2026-112633.swift

@@ -1,23 +1,8 @@
 // iio.tiff.planar · ImageIO · decodeStripPlanar · CVE-2026-112633 / 112614
-// 原语: OOB 写 · 进程内 · tier 2
-// Primitive: OOB write · in-process · tier 2
-//
-// [zh] TIFF planar 散写越界
-// 当 PlanarConfiguration=2 且 SamplesPerPixel 大于 Photometric 所指的通道数时，散写指针的偏移以 32 位乘法计算，且计算结果与目标行容量之间不存在任何比较。
-// 27.2 改为 64 位 umull 并比对所需字节数与容量。
-//
-// [en] TIFF planar scatter out-of-bounds write
-// With PlanarConfiguration=2 and SamplesPerPixel greater than the channel count implied by Photometric,
-// the scatter pointer offset is computed with a 32-bit multiply and the result is never compared
-// against the destination row capacity. iOS 27.2 switches to a 64-bit umull and compares required
-// bytes against capacity.
-// ── 判别 / oracle ──
-// 24A435 的报错串不存在：\"*** ERROR: decodeStripPlanar destination row is %u bytes, the scatter needs %llu\"。
-//  变体 iio.pdf.raster: PDF 栅格化解码缓冲越界
-
+// TIFF planar scatter out-of-bounds write
 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)] }
@@ -38,22 +23,8 @@ enum B {
     static func ascii(_ s: String) -> [UInt8] { Array(s.utf8) }
 }
 
-/*
-// iio.pdf.raster · ImageIO · PDFReadPlugin::decodeImageData · CVE-2026-112633
-// 原语: OOB 写 · 进程内 · tier 2
-// Primitive: OOB write · in-process · tier 2
-//
-// [zh] PDF 栅格化解码缓冲越界
-// PDF 页被栅格化进调用方提供的解码缓冲，但未校验该缓冲是否足以容纳。27.2 补入 umull width×bpp、与 have 比较、b.hi 跳转，并报 \"decode buffer
-// too small: need %zu bytes (%zu x %zu), have %zu\"。
-//
-// [en] PDF rasterisation decode buffer overrun
-// The PDF page is rasterised into a caller-supplied decode buffer with no check that the buffer is
-// large enough. iOS 27.2 adds umull width×bpp, compares against have, branches b.hi, and reports
-// "decode buffer too small: need %zu bytes (%zu x %zu), have %zu".
-*/
 
-// ── 种子构造 / seed construction — verbatim from Cinder27 Sources (TIFFPayload) ──
+// ── seed construction (from Cinder27 Sources: TIFFPayload) ──
 enum TIFFPayload {
     struct Entry {
         let tag: UInt16