Fix Debian 13 displaying for i386 architecture

- Add unsupported_arches field to Debian versions that don't support i386
- Mark Debian 13 (trixie), forky (testing), and sid (unstable) as unsupported for i386
- Modify debian.ipxe.j2 template to conditionally hide unsupported versions for i386
- Ensures only Debian 12 (bookworm) is shown for i386 users, which is correct

Resolves issue #1672 where Debian 13 was incorrectly shown as available
for i386 architecture despite dropping support after Debian 12.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-authored-by: Antony Messerli <antonym@users.noreply.github.com>

roles/netbootxyz/defaults/main.yml

@@ -212,13 +212,16 @@ releases:
       stable:
       - code_name: trixie
         name: 13.0 (trixie)
+        unsupported_arches: ["i386"]
       - code_name: bookworm
         name: 12.0 (bookworm)
       testing:
       - code_name: forky
         name: forky (testing)
+        unsupported_arches: ["i386"]
       - code_name: sid
         name: sid (unstable)
+        unsupported_arches: ["i386"]
   devuan:
     base_dir: devuan
     enabled: true

roles/netbootxyz/templates/menu/debian.ipxe.j2

@@ -16,11 +16,19 @@ clear older_release
 menu ${os} - ${os_arch}
 item --gap Latest Releases
 {% for item in releases.debian.versions.stable %}
+{% if item.unsupported_arches and "i386" in item.unsupported_arches %}
+iseq ${os_arch} i386 || item {{ item.code_name }} ${space} ${os} {{ item.name }}
+{% else %}
 item {{ item.code_name }} ${space} ${os} {{ item.name }}
+{% endif %}
 {% endfor %}
 item --gap Testing Releases
 {% for item in releases.debian.versions.testing %}
+{% if item.unsupported_arches and "i386" in item.unsupported_arches %}
+iseq ${os_arch} i386 || item {{ item.code_name }} ${space} ${os} {{ item.name }}
+{% else %}
 item {{ item.code_name }} ${space} ${os} {{ item.name }}
+{% endif %}
 {% endfor %}
 item --gap Older Releases
 item older_release ${space} Set release codename...