refactor: remove redundant lez_indexer_ffi.h thanks to cpp_compat from LEZ cbindgen

flake.lock

@@ -1348,11 +1348,11 @@
         "rust-rapidsnark": "rust-rapidsnark"
       },
       "locked": {
-        "lastModified": 1782142589,
-        "narHash": "sha256-K5NtBontpPx1XqnX6jbEzPXSchaLbPlG9689W+C/ExA=",
+        "lastModified": 1782200713,
+        "narHash": "sha256-5nA3rAiK0957Enbx7femzpZwhB7pZ4u7Sdx/GFAt8kE=",
         "ref": "erhant/fix-indexer-ffi",
-        "rev": "2a78b1b3d1b4080930c00ecf23b5c0e73cd646b8",
-        "revCount": 2773,
+        "rev": "30ed55717e33d9b28addc231d1a399789657f982",
+        "revCount": 2774,
         "type": "git",
         "url": "https://github.com/logos-blockchain/logos-execution-zone"
       },

src/lez_ffi_marshalling.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "lez_indexer_ffi.h"
+#include <indexer_ffi.h>
 
 #include <nlohmann/json.hpp>
 #include <string>

src/lez_indexer_ffi.h

@@ -1,15 +0,0 @@
-#pragma once
-
-// The generated indexer_ffi.h is a plain C header with no `extern "C"` guard of
-// its own, so a C++ translation unit including it directly would name-mangle the
-// FFI declarations and fail to link against the C-ABI symbols in libindexer_ffi.
-// This wrapper provides the `extern "C"` linkage behind a single include point;
-// both lez_indexer_module_impl.cpp and lez_ffi_marshalling include THIS header,
-// not <indexer_ffi.h> directly.
-#ifdef __cplusplus
-extern "C" {
-#endif
-#include <indexer_ffi.h>
-#ifdef __cplusplus
-}
-#endif

src/lez_indexer_module_impl.cpp

@@ -1,7 +1,7 @@
 #include "lez_indexer_module_impl.h"
 
 #include "lez_ffi_marshalling.h"
-#include "lez_indexer_ffi.h"
+#include <indexer_ffi.h>
 
 #include <cstdint>
 #include <cstdio>