deploy(b1): wire TIINGO_API_KEY into the Dagster pod (equity sleeves)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

infra/k8s/orchestration/dagster.yaml

@@ -109,6 +109,8 @@ spec:
               valueFrom: { secretKeyRef: { name: db-credentials, key: password } }
             - name: DATABENTO_API_KEY
               valueFrom: { secretKeyRef: { name: databento-credentials, key: api-key } }
+            - name: TIINGO_API_KEY                          # equity sleeves (sixtyforty/multistrat/gd) fetch Tiingo adjClose
+              valueFrom: { secretKeyRef: { name: tiingo-api, key: key } }
           readinessProbe: { tcpSocket: { port: 3000 }, initialDelaySeconds: 10, periodSeconds: 15 }
           volumeMounts:
             - { name: dagster-home, mountPath: /dagster-home }