fix: remove extra_src_dirs to prevent EUnit from finding CT modules

The previous configuration caused rebar3 eunit to find and try to load
CT SUITE modules which are not meant to be run as EUnit tests.

Author: GSMLG-BOT

rebar.config

@@ -17,6 +17,7 @@
 {cover_opts, [verbose]}.
 
 %% Common Test configuration
+%% E2E tests use auto_compile to compile helpers on demand
 {ct_opts, [
     {sys_config, "config/sys.config"},
     {logdir, "_build/test/logs"},
@@ -29,9 +30,7 @@
     {test, [
         {erl_opts, [debug_info, nowarn_export_all]},
         {deps, []},
-        %% Include test helpers in compilation path
-        {extra_src_dirs, ["test/e2e/common"]},
-        %% Ensure CT can find compiled helpers
+        %% CT opts for E2E tests - auto_compile handles test/e2e/common
         {ct_opts, [
             {sys_config, "config/sys.config"},
             {logdir, "_build/test/logs"},