feat(approval): add safe risk disposition workflow

server/src/app/models/__init__.py

@@ -11,6 +11,7 @@ from app.models.ai_application_preview import AIApplicationPreviewDecision
 from app.models.ai_learning import AIDecision, AIDecisionFeedback, WorkflowOutcome
 from app.models.ai_memory import MemoryEntry, MemoryEvidenceLink
 from app.models.approval import ApprovalRecord
+from app.models.approval_action import ApprovalActionLedger
 from app.models.attachment_association_job import AttachmentAssociationJob
 from app.models.audit_log import AuditLog
 from app.models.auth_session import AuthSession
@@ -32,6 +33,7 @@ from app.models.hermes_report import HermesRiskReport
 from app.models.notification_state import NotificationState
 from app.models.organization import OrganizationUnit
 from app.models.reimbursement import ReimbursementRequest
+from app.models.risk_disposition import RiskDisposition, RiskDispositionEvent
 from app.models.risk_observation import RiskObservation, RiskObservationFeedback
 from app.models.role import Role
 from app.models.system_model_setting import SystemModelSetting
@@ -54,6 +56,7 @@ __all__ = [
     "AgentTraceEvent",
     "AIApplicationPreviewDecision",
     "ApprovalRecord",
+    "ApprovalActionLedger",
     "AttachmentAssociationJob",
     "AuditLog",
     "AuthSession",
@@ -80,6 +83,8 @@ __all__ = [
     "NotificationState",
     "OrganizationUnit",
     "ReimbursementRequest",
+    "RiskDisposition",
+    "RiskDispositionEvent",
     "RiskObservation",
     "RiskObservationFeedback",
     "Role",