Add manual failures UI and global list filtering

internal/repository/failures/failures.go

@@ -128,3 +128,32 @@ func (r *FailureRepository) ListAll(ctx context.Context, limit int) ([]domain.Fa
 	}
 	return items, nil
 }
+
+func (r *FailureRepository) Get(ctx context.Context, id string) (domain.FailureEvent, error) {
+	row := r.db.QueryRowContext(ctx,
+		`SELECT id, source, external_id, part_id, machine_id, failure_type, failure_time, details, confidence, created_at
+		 FROM failure_events
+		 WHERE id = ?`,
+		id,
+	)
+	var event domain.FailureEvent
+	var machineID sql.NullString
+	var details sql.NullString
+	var confidence sql.NullFloat64
+	if err := row.Scan(&event.ID, &event.Source, &event.ExternalID, &event.PartID, &machineID, &event.FailureType, &event.FailureTime, &details, &confidence, &event.CreatedAt); err != nil {
+		return domain.FailureEvent{}, err
+	}
+	if machineID.Valid {
+		value := machineID.String
+		event.MachineID = &value
+	}
+	if details.Valid {
+		value := details.String
+		event.Details = &value
+	}
+	if confidence.Valid {
+		value := confidence.Float64
+		event.Confidence = &value
+	}
+	return event, nil
+}