Merge pull request #60 from zestones/4-m13-migration-007-failure_historysignal_patterns

feat(database): add signal_patterns column to failure_history and upd…

Author: zestones

backend/infrastructure/database/migrations/versions/007_aria_kb_workorder_extension.up.sql

@@ -86,3 +86,11 @@ ALTER TABLE work_order
 ALTER TABLE work_order
     ADD CONSTRAINT chk_wo_status CHECK (status IN ('detected', 'analyzed', 'open', 'in_progress', 'completed', 'cancelled'));
 
+-- ============================================
+-- failure_history — signal signature column (M1.3)
+-- Stores the time-series signal pattern captured at anomaly time.
+-- Used by Investigator for pattern matching against past failures.
+-- ============================================
+ALTER TABLE failure_history
+    ADD COLUMN signal_patterns jsonb DEFAULT NULL;
+

backend/modules/kb/repository.py

@@ -5,15 +5,14 @@
 from typing import Any
 
 import asyncpg
-
 from core.json_fields import encode_fields
 
-
 JSON_FIELDS = (
     "nominal_specs",
     "common_failure_modes",
     "maintenance_recommendations",
     "parts_replaced",
+    "signal_patterns",
 )
 
 

backend/modules/kb/schemas.py

@@ -56,4 +56,5 @@ class FailureHistoryOut(_Base):
     downtime_minutes: Optional[int] = None
     cost_estimate: Optional[Decimal] = None
     work_order_id: Optional[int] = None
+    signal_patterns: Optional[Any] = None
     created_at: datetime