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-2026-112522/CVE-2026-112522.swift

@@ -1,28 +1,9 @@
 // arc.iso · libarchive · build_pathname_utf16be · CVE-2026-112522
-// 原语: OOB 写 · 进程内 · tier 1
-// Primitive: OOB write · in-process · tier 1
-//
-// [zh] ISO9660 Joliet 路径名堆溢出
-// build_pathname_utf16be 在递归拼入父路径之后无条件写入 2 字节的 UTF-16BE '/'，且不再复核累计长度是否超过 1024 的上限。当目录链累计长度恰为 1024
-// 字节时，最深层回卷的写入落在 p[1024] 与 p[1025]，越过 malloc(1024) 两个字节，其中 0x002F 覆盖相邻堆块头。
-//
-// [en] ISO9660 Joliet pathname heap overflow
-// After recursively appending the parent path, build_pathname_utf16be unconditionally writes a 2-byte
-// UTF-16BE '/' without re-checking the running length against the 1024 limit. When a directory chain
-// sums to exactly 1024 bytes the deepest unwind writes at p[1024] and p[1025], two bytes past a malloc(1024)
-// buffer, and 0x002F overwrites the adjacent heap chunk header.
-// ── 判别 / oracle ──
-// 目录链长度 4×206 + 192 + 4×2 = 1024，与上限精确对齐。已在 macOS 同版本 fork 上以 bsdtar 复现，硬件断点命中于 \"Pathname is too
-// long\" 之前的写指令。
-//  变体 arc.iso.stress: Joliet 路径长度循环
-//  变体 arc.cab: CAB LZX 历史未初始化即取匹配
-//
-// 种子构建器（python，可直接运行）: CVE-2026-112522/CVE-2026-112522.py
-// runnable python seed builder: CVE-2026-112522/CVE-2026-112522.py
-
+// ISO9660 Joliet pathname heap overflow
+// Standalone builder: CVE-2026-112522.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)] }
@@ -43,36 +24,8 @@ enum B {
     static func ascii(_ s: String) -> [UInt8] { Array(s.utf8) }
 }
 
-/*
-// arc.iso.stress · libarchive · build_pathname_utf16be · CVE-2026-112522
-// 原语: OOB 写 · 进程内 · tier 1
-// Primitive: OOB write · in-process · tier 1
-//
-// [zh] Joliet 路径长度循环
-// 对同一 ISO 反复遍历，使 2 字节越界写在堆上多次发生并与其它分配交错。单次两字节的写通常被 malloc 元数据吸收，重复执行才可能将损坏推移到可见位置。
-//
-// [en] Joliet path length loop
-// The same ISO is traversed repeatedly so the 2-byte out-of-bounds write happens many times and interleaves
-// with other allocations. A single two-byte write is usually absorbed by malloc metadata; repetition
-// is what pushes the damage into a visible position.
-*/
 
-/*
-// arc.cab · libarchive · lzx_decode_blocks · CVE-2026-112522
-// 原语: OOB 读 · 进程内 · tier 2
-// Primitive: OOB read · in-process · tier 2
-//
-// [zh] CAB LZX 历史未初始化即取匹配
-// LZX 解码在计算 copy_pos = (w_pos − copy_pos) & w_mask 之后直接进入复制循环。当窗口尚未被写入时，copy_pos 指向未初始化区域，复制所得即为残留堆内容。
-// 27.2 补入 copy_pos == 0 || copy_pos > w_filled → ARCHIVE_FAILED。
-//
-// [en] CAB LZX match against uninitialised history
-// LZX decoding computes copy_pos = (w_pos − copy_pos) & w_mask and drops straight into the copy loop.
-// While the window has not yet been written, copy_pos points into uninitialised memory and the copied
-// bytes are residual heap. iOS 27.2 adds copy_pos == 0 || copy_pos > w_filled → ARCHIVE_FAILED.
-*/
-
-// ── 种子构造 / seed construction — verbatim from Cinder27 Sources (CABPayload) ──
+// ── seed construction (from Cinder27 Sources: CABPayload) ──
 enum CABPayload {
 static func lzxEarlyMatch() -> Data {
         var out = Data()