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-2026-65385/CVE-2026-65385.c

@@ -0,0 +1,28 @@
+// kext.iohid · IOKit.framework · IOHIDEventAppendEvent · CVE-2026-65385
+// HID event tree append entry point probe
+// C twin of the Swift POC: dlopens IOKit and dlsyms the event-tree entry points
+// (create/append/serialize/type/vendor-defined) the unbounded append lives behind.
+// Build: clang -O2 -o cve-2026-65385 CVE-2026-65385.c
+// Run:   ./cve-2026-65385
+
+#include <stdio.h>
+#include <string.h>
+#include <dlfcn.h>
+
+int main(void) {
+    const char *syms[] = {
+        "IOHIDEventCreateCopy", "IOHIDEventAppendEvent", "IOHIDEventCreateData",
+        "IOHIDEventGetType", "IOHIDEventCreateVendorDefined",
+    };
+    void *h = dlopen("/System/Library/Frameworks/IOKit.framework/IOKit", RTLD_NOW);
+    if (!h) {
+        printf("x IOKit cannot be dlopened\n");
+        return 1;
+    }
+    printf("ok IOKit\n");
+    for (size_t i = 0; i < sizeof syms / sizeof syms[0]; i++) {
+        printf("  %s: %s\n", syms[i], dlsym(h, syms[i]) ? "resolved" : "missing");
+    }
+    printf("CVE-2026-65385 · IOHIDEvent append surface probed\n");
+    return 0;
+}