fix(email): route sqcp SMTP through Azure ACS relay

Replaces direct Poste.io SMTP (mail.squaremcp.com:30587, port 25 blocked)
with Azure Communication Services relay (smtp.azurecomm.net:587).
All sqcp_* accounts share a single ACS credential; FROM addresses unchanged.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

hermes-k8s.yaml

@@ -22,7 +22,7 @@ spec:
         fsGroup: 1000
       containers:
         - name: hermes-mcp
-          image: localhost:32000/hermes-mcp@sha256:b3716e0d7a86ba3b34047b75cd8af91078aaf9a1dcd64760bd238f358fb79e3f
+          image: localhost:32000/hermes-mcp@sha256:793e7a6e0486b4c117b8ab62a3668ae0f9235b014b02181ce3cb65696a16d96c
           imagePullPolicy: Always
           securityContext:
             allowPrivilegeEscalation: false
@@ -103,6 +103,14 @@ spec:
               value: "contact@squaremcp.com"
             - name: SQCP_CONTACT_PASSWORD
               value: "onelove"
+            - name: SQCP_SMTP_HOST
+              value: "smtp.azurecomm.net"
+            - name: SQCP_SMTP_PORT
+              value: "587"
+            - name: SQCP_SMTP_USER
+              value: "fetcherpay-comm-prod.628d0126-984a-436a-8920-fcc877f5481a.57af0299-f395-4cf7-8fc5-3017211b2879"
+            - name: SQCP_SMTP_PASS
+              value: "5SH8Q~aPvVVvFeSoXAfPB0MhDqNny_AwmjeQLbXf"
             - name: SQCP_ADMIN_EMAIL
               value: "admin@squaremcp.com"
             - name: SQCP_ADMIN_PASSWORD