feat(il2cpp): link native methods and export Ghidra seeds

Link IL2CPP metadata names to native addresses and types through shared CLI/MCP workflows, with bounded queries and atomic Ghidra seed export.

Preserve the original implementation by 8rulerstar and follow-up correctness, resource, provenance, and CI dependency repairs. Verified against real Windows/Android artifacts, independent references, actual Ghidra, and focused CLI/MCP tests.

Fixes #5112.

src/il2cpp/Il2cppBinaryFormat.ts

@@ -0,0 +1,49 @@
+export const IL2CPP_BINARY_FAILURE_REASONS = {
+  unsupported: [
+    "unsupported-container",
+    "slice-selection-required",
+    "slice-not-found",
+    "ambiguous-slice-selection",
+    "unsupported-pointer-encoding",
+    "unsupported-type-kind",
+  ],
+  capacity: [
+    "native-index-capacity",
+    "type-nesting-capacity",
+    "native-type-text-capacity",
+  ],
+  malformed: [
+    "malformed-container",
+    "code-gen-modules-not-found",
+    "ambiguous-code-gen-module",
+    "code-registration-not-found",
+    "invalid-method-pointer",
+    "invalid-method-token",
+    "metadata-registration-not-found",
+    "invalid-type",
+  ],
+} as const;
+
+export type Il2cppBinaryFailureReason =
+  (typeof IL2CPP_BINARY_FAILURE_REASONS)[keyof typeof IL2CPP_BINARY_FAILURE_REASONS][number];
+
+/** A native image REA cannot link, either outside coverage or inconsistent with the metadata. */
+export class Il2cppBinaryFormatFailure extends Error {
+  readonly kind: "unsupported" | "malformed" | "capacity";
+  constructor(
+    readonly reason: Il2cppBinaryFailureReason,
+    message: string,
+  ) {
+    super(`${reason}: ${message}`);
+    this.name = "Il2cppBinaryFormatFailure";
+    this.kind = (
+      IL2CPP_BINARY_FAILURE_REASONS.unsupported as readonly string[]
+    ).includes(reason)
+      ? "unsupported"
+      : (IL2CPP_BINARY_FAILURE_REASONS.capacity as readonly string[]).includes(
+            reason,
+          )
+        ? "capacity"
+        : "malformed";
+  }
+}