refactor(scoring): persist weights in DB table, replace mutable Settings with scoring_config_service

backend/app/models/__init__.py

@@ -19,6 +19,7 @@ from app.models.coverage_snapshot import CoverageSnapshot, SnapshotTechniqueStat
 from app.models.jira_link import JiraLink, JiraLinkEntityType, JiraSyncDirection
 from app.models.worklog import Worklog
 from app.models.osint_item import OsintItem
+from app.models.scoring_config import ScoringConfig
 from app.models.enums import TechniqueStatus, TestState, TestResult, TeamSide
 
 __all__ = [
@@ -31,6 +32,6 @@ __all__ = [
     "ComplianceFramework", "ComplianceControl", "ComplianceControlMapping",
     "CoverageSnapshot", "SnapshotTechniqueState",
     "JiraLink", "JiraLinkEntityType", "JiraSyncDirection",
-    "Worklog", "OsintItem",
+    "Worklog", "OsintItem", "ScoringConfig",
     "TechniqueStatus", "TestState", "TestResult", "TeamSide",
 ]