fix: move encryptid containers to rspace-internal network

The encryptid-internal network had persistent Docker networking issues
(TCP CONNECT_TIMEOUT between containers on the same bridge). Using the
rspace-internal network which already works for rspace↔rspace-db.

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

docker-compose.yml

@@ -213,7 +213,7 @@ services:
       - "traefik.http.routers.encryptid-wellknown-rid.service=encryptid"
     networks:
       - traefik-public
-      - encryptid-internal
+      - rspace-internal
       - rmail-mailcow
     healthcheck:
       test: ["CMD", "bun", "-e", "fetch('http://localhost:3000/health').then(r => r.json()).then(d => process.exit(d.database ? 0 : 1)).catch(() => process.exit(1))"]
@@ -233,7 +233,7 @@ services:
     volumes:
       - encryptid-pgdata:/var/lib/postgresql/data
     networks:
-      - encryptid-internal
+      - rspace-internal
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U encryptid -d encryptid"]
       interval: 10s
@@ -262,4 +262,3 @@ networks:
     name: mailcowdockerized_mailcow-network
     external: true
   rspace-internal:
-  encryptid-internal: