fix rebar.config

rebar.config

@@ -1,5 +1,6 @@
 {erl_opts, [
-    debug_info
+    debug_info,
+    {i, "./_build/default/plugins/gpb/include"}
 ]}.
 
 {plugins, [
@@ -16,7 +17,7 @@
     {module_name_suffix, "_pb"},   % 生成模块后缀
     {o_erl, "src"},                % .erl 输出目录
     {o_hrl, "include"},            % .hrl 输出目录
-    {hrl_include_lib, "gpb/include/gpb.hrl"},  % ⚡ gpb 内部 record
+    include_as_lib,                % gpb.hrl 通过 -include_lib("gpb/include/gpb.hrl")
     {strings_as_binaries, true},   % proto string → Erlang binary
     type_specs,                    % 生成 type specs
     report,                        % 编译报告