fix: pass enabled_plugins to SetupOrchestrator in trial execution

The SetupOrchestrator created during trial execution was missing the
enabled_plugins parameter, causing plugins to never run. Store
enabled_plugins as instance variable and pass to both orchestrator
instantiations.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: clkao

ade_bench/harness.py

@@ -109,6 +109,7 @@ def __init__(
         self._project_type_filter = project_type
         self._keep_alive = keep_alive
         self._with_profiling = with_profiling
+        self._enabled_plugins = enabled_plugins
 
         # Initialize setup orchestrator for variant-specific setup
         self._setup_orchestrator = SetupOrchestrator(enabled_plugins=enabled_plugins)
@@ -522,7 +523,8 @@ def _run_setup(
                 terminal=terminal,
                 session=session,
                 file_diff_handler=file_diff_handler,
-                trial_handler=trial_handler
+                trial_handler=trial_handler,
+                enabled_plugins=self._enabled_plugins
             )
 
             # Run setup with timeout using asyncio