refactor: establish feature application service layout

backend/bootstrap/container.py

@@ -4,17 +4,17 @@ from dataclasses import dataclass
 from pathlib import Path
 from collections.abc import Callable
 
-from alert_service import AlertService
 from backend.data import DataGateway, build_data_gateway
 from backend.database.repositories import RepositoryBundle, build_repository_bundle
+from backend.features.alerts import AlertService
+from backend.features.review import TradeJournalService
+from backend.features.screener import StrategyTrackingService
 from chart_data_provider import MarketChartClient
 from database import ReviewDatabase
 from ifind_client import IfindHttpClient
 from mentor_agent import MentorSkillRegistry
 from realtime_aggregator import WebRealtimeAggregator
 from screener import ScreenerEngine
-from strategy_tracking import StrategyTrackingService
-from trade_journal import TradeJournalService
 
 
 @dataclass(frozen=True)