Add multi-account OAuth, Obsidian integration, product assets, and test tooling

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

product/site/squaremcp-mail-ingress.yaml

@@ -0,0 +1,29 @@
+# K8s Ingress for mail.squaremcp.com
+# Routes webmail/admin traffic to the existing poste.io service in the email namespace
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: squaremcp-mail-ingress
+  namespace: email
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt-prod
+    nginx.ingress.kubernetes.io/proxy-body-size: "50m"
+    nginx.ingress.kubernetes.io/ssl-redirect: "false"
+spec:
+  ingressClassName: nginx
+  rules:
+    - host: mail.squaremcp.com
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: complete-mail-service
+                port:
+                  number: 80
+  tls:
+    - hosts:
+        - mail.squaremcp.com
+      secretName: mail-squaremcp-tls