feat(get-rhema): expose the S3 API publicly for release uploads

The release runners cannot resolve the in-cluster Service name, so the
binary uploads died on DNS. s3.rhema.rs fronts the same Garage through
Caddy and Traefik, with its own certificate, matching the web face's
shape (Caddy terminates, Traefik routes, bucket by path).

dns/production/rhema.rs.yaml

@@ -15,6 +15,14 @@ get:
   ttl: 300
   type: A
   value: 82.64.154.58
+s3:
+  octodns:
+    cloudflare:
+      auto-ttl: true
+      proxied: false
+  ttl: 300
+  type: A
+  value: 82.64.154.58
 www:
   octodns:
     cloudflare:

kubernetes/infrastructure/caddy-certificates/certificates.yaml

@@ -162,6 +162,22 @@ spec:
 ---
 apiVersion: cert-manager.io/v1
 kind: Certificate
+metadata:
+  name: s3-rhema-rs
+  namespace: caddy
+spec:
+  secretName: s3-rhema-rs-tls
+  issuerRef:
+    name: letsencrypt-production
+    kind: ClusterIssuer
+  commonName: s3.rhema.rs
+  dnsNames:
+    - s3.rhema.rs
+  duration: 2160h # 90 days
+  renewBefore: 360h # 15 days before expiry
+---
+apiVersion: cert-manager.io/v1
+kind: Certificate
 metadata:
   name: www-rhema-rs
   namespace: caddy

kubernetes/infrastructure/caddy/caddyfile.yaml

@@ -142,3 +142,8 @@ data:
       tls /etc/caddy/certs/get-rhema-rs/tls.crt /etc/caddy/certs/get-rhema-rs/tls.key
       reverse_proxy traefik.traefik.svc.cluster.local.:80
     }
+
+    s3.rhema.rs {
+      tls /etc/caddy/certs/s3-rhema-rs/tls.crt /etc/caddy/certs/s3-rhema-rs/tls.key
+      reverse_proxy traefik.traefik.svc.cluster.local.:80
+    }

kubernetes/production/get-rhema/values.yaml

@@ -19,30 +19,40 @@ web:
         # cert; Caddy proxies to Traefik by host, so no tls block here.
         tls:
             enabled: false
+# The write surface, public via Caddy: the release runners reach the
+# S3 API by host (the in-cluster Service name does not resolve from
+# them). TLS terminates at Caddy, like the web face.
+s3:
+    ingress:
+        enabled: true
+        className: traefik
+        host: s3.rhema.rs
+        tls:
+            enabled: false
+            secretName: ""
 sops:
-    lastmodified: "2026-10-15T20:28:51Z"
+    lastmodified: "2026-10-16T06:56:14Z"
-    mac: ENC[AES256_GCM,data:+lYkUZ+5erultYuI0ejlAUiVnPhwZ7wwlB3IqDP2M5YAXln7kqu7xMptvrgWGEHPavdmZwBvbBLf3FC1i1Zkio04iFpZ/zLTb/msomSjf7e2lQhk5VLHgqzS/Cd/ZvEvlXfuVPTKrWDdlKKdozY+Ge+WspGSL26Hf7/9rMqKvpM=,iv:6Rh6Ues/OHxDkgOkGIylz490m3kNX1TGQP5bH/UFjRg=,tag:w2oXRK2twjXN3IhnKf0uow==,type:str]
+    mac: ENC[AES256_GCM,data:XuFKJcXb2C22x1GaADmX+QwQNAeUiYsmSh4g0Z5CTyvIXSI5gksAVKNgF0RqRNDLDmDA1jGCS+a0Y//ExXZO1kKQj2jYdYcKU4IvOmniMiwut5ZtobFbuskv7boAxmNRT/Y/4RgyyT8+45b/2+u3i9u2cwSQQ0Itvh5PxpFlE+I=,iv:3qXS6rEkeodOwLt5AOx8atfr15fK1zpmkM8uKjxUB2w=,tag:1Y78Jq8E44IGukCpR99UwA==,type:str]
     pgp:
-        - created_at: "2026-10-15T20:28:50Z"
+        - created_at: "2026-10-16T06:56:14Z"
           enc: |-
             -----BEGIN PGP MESSAGE-----
 
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+            AOzPM4U43wnYrTp1sq4N9Xh7xU2m2e7iUt/g2dtRFvx0vv2qMt4ianqzYiB0
-            =zBGK
+            =1619
             -----END PGP MESSAGE-----
           fp: DC6910268E657FF70BA7EC289974494E76938DDC
-    encrypted_regex: ^(password|value|ssh-key|api-key|user|username|privateKey|clientSecret|clientId|apiKey|extraArgs.*|.*Secret.*|extraEnvVars|.*SECRET.*|.*secret.*|key|.*Password|.*PASS|.*SOCIALACCOUNT_PROVIDERS|.*\.ya?ml|token)$
+    encrypted_regex: ^(data|stringData|.*key|.*crt)$
-    mac_only_encrypted: true
     version: 3.10.2