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-2026-112507/CVE-2026-112507.swift

@@ -1,24 +1,8 @@
-// kern.ipc · XNU · ipc_port.c 请求表消费方 · CVE-2026-112507 / 112476
-// 原语: UAF · 内核 · tier 2
-// Primitive: use-after-free · kernel · tier 2
-//
-// [zh] ipc_port 请求表索引竞态
-// 27.2 为每个消费 per-space 端口请求表索引的函数补入 cmp/b.hi 与 NULL 陷阱（ipc_port.c:21/24/34/38/40/41）。27.0 的 free
-// 路径计算了边界却丢弃结果，仍以未检查的基址执行读改写；mark 路径则完全没有边界计算。索引取自 space 中保存的请求表下标，故缺陷形状为「表增长或拆除」与「通知注册或消息发送」并发下的陈旧索引。
-//
-// [en] ipc_port request table index race
-// iOS 27.2 adds cmp/b.hi and NULL traps to every function that consumes a per-space port request
-// table index (ipc_port.c:21/24/34/38/40/41). On 27.0 the free path computes the bounds and discards
-// the result, still performing the read-modify-write through the unchecked base; the mark path has
-// no bounds computation at all. The index comes from the space's saved request-table slot, so the
-// defect shape is a stale index under concurrency between table growth or teardown and notification
-// registration or message send.
-// ── 判别 / oracle ──
-// 该路径上无 entitlement 门槛的入口为 mach_msg 与端口通知注册。本模块以 8 线程运行 6 秒，统计内核返回码分布 —— 任何非 KERN_SUCCESS 的出现频次变化都是索引越界的候选信号。
-
+// kern.ipc · XNU · ipc_port.c request-table consumers · CVE-2026-112507 / 112476
+// ipc_port request table index race
 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)] }
@@ -40,4 +24,3 @@ enum B {
 }
 
 
-