Add an explicit ArgoCD sync and health-poll script

infra/helm/medical-chatbot/templates/ai-service.yaml

@@ -81,6 +81,25 @@ spec:
                 secretKeyRef:
                   name: {{ include "medical-chatbot.secretName" . }}
                   key: postgres-dsn
+            {{- if .Values.aws.region }}
+            - name: AWS_REGION
+              value: {{ .Values.aws.region | quote }}
+            {{- end }}
+            {{- if .Values.aws.staticCredentials.enabled }}
+            # Only rendered for clusters with no instance role / IRSA; see the
+            # `aws` block in values.yaml. Environment variables take precedence
+            # over the instance role, so this must stay off on AWS-hosted nodes.
+            - name: AWS_ACCESS_KEY_ID
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "medical-chatbot.secretName" . }}
+                  key: aws-access-key-id
+            - name: AWS_SECRET_ACCESS_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: {{ include "medical-chatbot.secretName" . }}
+                  key: aws-secret-access-key
+            {{- end }}
           readinessProbe:
             httpGet: { path: /ready, port: http }
             initialDelaySeconds: 5