Add new infra architecture 3

infrastructure/platform/mail/mailu-helm/dev/values.yaml

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+# Dev-specific Mailu Helm values for Bakery-IA
+# Overrides base configuration for development environment
+
+# Domain configuration for dev
+domain: "bakery-ia.local"
+hostnames:
+  - "mail.bakery-ia.local"
+
+# External relay configuration for dev
+externalRelay:
+  host: "[smtp.mailgun.org]:587"
+  username: "postmaster@bakery-ia.local"
+  password: "mailgun-api-key-replace-in-production"
+
+# Ingress configuration for dev - disabled to use with existing ingress
+ingress:
+  enabled: false  # Disable chart's Ingress; use existing one
+  tls: false      # Disable TLS in chart since ingress handles it
+  tlsFlavorOverride: notls  # No TLS on internal NGINX; expect external proxy to handle TLS
+  realIpHeader: X-Forwarded-For  # Header for client IP from your Ingress
+  realIpFrom: 0.0.0.0/0  # Trust all proxies (restrict to your Ingress pod CIDR for security)
+  path: /
+  pathType: ImplementationSpecific
+
+# TLS flavor for dev (may use self-signed)
+tls:
+  flavor: "cert"
+
+# Welcome message (disabled in dev)
+welcomeMessage:
+  enabled: false
+
+# Log level for dev
+logLevel: "DEBUG"
+
+# Network Policy for dev
+networkPolicy:
+  enabled: true
+  ingressController:
+    namespace: ingress-nginx
+    podSelector: |
+      matchLabels:
+        app.kubernetes.io/name: ingress-nginx
+        app.kubernetes.io/instance: ingress-nginx
+        app.kubernetes.io/component: controller
+  monitoring:
+    namespace: monitoring
+    podSelector: |
+      matchLabels:
+        app: signoz-prometheus