feat(ai): add personal expense application memory

server/src/app/models/__init__.py

@@ -9,6 +9,7 @@ from app.models.agent_feedback import AgentOperationFeedback
 from app.models.agent_run import AgentRun, AgentToolCall, AgentTraceEvent, SemanticParseLog
 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.audit_log import AuditLog
 from app.models.auth_session import AuthSession
@@ -72,6 +73,8 @@ __all__ = [
     "HermesTaskConfig",
     "HermesTaskExecutionLog",
     "HermesRiskReport",
+    "MemoryEntry",
+    "MemoryEvidenceLink",
     "NotificationState",
     "OrganizationUnit",
     "ReimbursementRequest",