feat(auth-sidecar): inject AUTH_OIDC_COOKIE_DOMAIN from annotation

Empty when the annotation is unset = host-only = unchanged for every app.

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

cluster-resources/letsencrypt-issuer.yaml

@@ -24,8 +24,15 @@ spec:
             name: azuredns-config
             key: client-secret
       selector:
-        dnsNames:
+        # NOTE: cert-manager solver selectors are NOT TLS-style wildcards. selector.dnsNames
-        - '*.forteapps.net'
+        # matches by exact FQDN, so '*.forteapps.net' here would match only a cert literally
+        # named '*.forteapps.net' — it would NOT cover 'drop.forteapps.net'. selector.dnsZones
+        # instead suffix-matches the zone apex AND every subdomain at any depth, so this single
+        # entry routes all forteapps.net ACME challenges (forteapps.net, *.forteapps.net,
+        # drop.forteapps.net, *.drop.forteapps.net, mcp.drop.forteapps.net, ...) through this
+        # Azure dns01 solver. Wildcard names require dns01; non-wildcard names that ever fail
+        # to match fall through to the http01 solver below.
+        dnsZones:
         - 'forteapps.net'
     # HTTP-01 fallback for non-wildcard certificates
     - http01:
@@ -58,8 +65,15 @@ spec:
             name: azuredns-config
             key: client-secret
       selector:
-        dnsNames:
+        # NOTE: cert-manager solver selectors are NOT TLS-style wildcards. selector.dnsNames
-        - '*.forteapps.net'
+        # matches by exact FQDN, so '*.forteapps.net' here would match only a cert literally
+        # named '*.forteapps.net' — it would NOT cover 'drop.forteapps.net'. selector.dnsZones
+        # instead suffix-matches the zone apex AND every subdomain at any depth, so this single
+        # entry routes all forteapps.net ACME challenges (forteapps.net, *.forteapps.net,
+        # drop.forteapps.net, *.drop.forteapps.net, mcp.drop.forteapps.net, ...) through this
+        # Azure dns01 solver. Wildcard names require dns01; non-wildcard names that ever fail
+        # to match fall through to the http01 solver below.
+        dnsZones:
         - 'forteapps.net'
     # HTTP-01 fallback for non-wildcard certificates
     - http01:

cluster-resources/policies/auth-sidecar-injector.yaml

@@ -233,6 +233,8 @@ spec:
               value: "{{ regex_replace_all('https?://[^/]*', request.object.metadata.annotations.\"policies.forteapps.io/auth-oidc-callback-path\", '') }}"
             - name: AUTH_OIDC_SCOPES
               value: "{{ request.object.metadata.annotations.\"policies.forteapps.io/auth-oidc-scopes\" || 'openid,profile,email'  }}"
+            - name: AUTH_OIDC_COOKIE_DOMAIN
+              value: "{{ request.object.metadata.annotations.\"policies.forteapps.io/auth-oidc-cookie-domain\" || '' }}"
             - name: AUTH_PUBLIC_PATHS
               value: "{{ request.object.metadata.annotations.\"policies.forteapps.io/auth-public-paths\" || '/healthz' }}"
             - name: AUTH_OIDC_COOKIE_SECRET