feat: uniform system.content source schema across installers and repositories

roles/global_defaults/defaults/main.yml

@@ -78,7 +78,23 @@ system_defaults:
   timezone: "Europe/Vienna"
   locale: "en_US.UTF-8"
   keymap: "us"
-  mirror: ""
+  # Uniform content source, family-resolved. source: dvd|mirror|satellite|none
+  # ('' -> family default: EL=dvd, debian/ubuntu/arch=mirror). satellite values
+  # come from inventory/vault only, never committed code.
+  content:
+    source: ""
+    url: ""
+    proxy: ""
+    gpgcheck: true
+    satellite:
+      host: ""
+      ip: ""              # optional /etc/hosts entry when DNS does not resolve host
+      org: ""
+      activation_key: ""
+      ca_url: ""
+      service_level: ""
+      environment: ""
+      install: false
   packages: []
   disks: []
   users: {}
@@ -127,9 +143,6 @@ system_defaults:
     banner:
       motd: false
       sudo: true
-    rhel_repo:
-      source: "iso" # iso|satellite|none - how RHEL systems get packages post-install
-      url: ""       # Satellite/custom repo URL when source=satellite
     chroot:
       tool: "arch-chroot" # arch-chroot|chroot|systemd-nspawn
     initramfs: