fix: resolve module conflict for monitoring package

- Rename monitoring.py to monitoring_service.py to avoid conflict
- Create __init__.py for monitoring package
- Update import in orchestrator.py
- Fixes ModuleNotFoundError for slo_monitor

src/infrastructure/monitoring/__init__.py

@@ -0,0 +1,14 @@
+"""Monitoring infrastructure package."""
+
+from .slo_monitor import *
+
+__all__ = [
+    "slo_monitor",
+    "SLOTarget", 
+    "SLOType",
+    "TimeWindow",
+    "record_api_request",
+    "record_investigation_result",
+    "record_agent_task",
+    "record_database_query"
+]

src/infrastructure/orchestrator.py

@@ -19,7 +19,7 @@ import structlog
 # Import all infrastructure components
 from .database import get_database_manager, cleanup_database, DatabaseManager
 from .cache_system import get_cache_manager, cleanup_cache, AdvancedCacheManager
-from .monitoring import get_monitoring_manager, cleanup_monitoring, ObservabilityManager
+from .monitoring_service import get_monitoring_manager, cleanup_monitoring, ObservabilityManager
 from .agent_pool import get_agent_pool_manager, cleanup_agent_pool, AgentPoolManager
 
 # Import ML components