feat(expense): add persistent zero-entry receipt association

server/src/app/db/base.py

@@ -13,6 +13,7 @@ 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.attachment_association_job import AttachmentAssociationJob
 from app.models.audit_log import AuditLog
 from app.models.auth_session import AuthSession
 from app.models.budget import BudgetAllocation, BudgetReservation, BudgetTransaction
@@ -59,6 +60,7 @@ __all__ = [
     "AIDecision",
     "AIDecisionFeedback",
     "ApprovalRecord",
+    "AttachmentAssociationJob",
     "AuditLog",
     "AuthSession",
     "BudgetAllocation",

server/src/app/db/migration_preflight.py

@@ -64,8 +64,23 @@ MIGRATION_OWNED_TABLES_BY_REVISION: dict[str, frozenset[str]] = {
             "workflow_outcomes",
         }
     ),
+    "20260716_0006": frozenset(
+        {
+            "expense_cases",
+            "expense_case_links",
+            "business_events",
+            "auth_sessions",
+            "attachment_association_jobs",
+            "ai_application_preview_decisions",
+            "ai_decisions",
+            "ai_decision_feedback",
+            "memory_entries",
+            "memory_evidence_links",
+            "workflow_outcomes",
+        }
+    ),
 }
-if MIGRATION_OWNED_TABLES_BY_REVISION["20260714_0005"] != MIGRATION_OWNED_TABLES:
+if MIGRATION_OWNED_TABLES_BY_REVISION["20260716_0006"] != MIGRATION_OWNED_TABLES:
     raise RuntimeError("latest Alembic revision must own the centralized migration table set")
 
 

server/src/app/db/schema_ownership.py

@@ -7,6 +7,7 @@ from app.db.base import Base
 MIGRATION_OWNED_TABLES: frozenset[str] = frozenset(
     {
         "auth_sessions",
+        "attachment_association_jobs",
         "ai_application_preview_decisions",
         "ai_decisions",
         "ai_decision_feedback",