fedora-intune: enforce Defender protection settings

Defender's defaults left behavior monitoring off and every setting
unmanaged. Ship /etc/opt/microsoft/mdatp/managed/mdatp_managed.json:
real-time protection, behavior monitoring, PUA blocking, cloud-delivered
protection at the high block level, automatic definition updates and
sample submission, and scheduled scans (daily quick at 12:00, weekly full
on Wednesday 12:30, low priority). Users can't change managed settings.
The build fails if the file isn't valid JSON.

Network protection (Insiders channels only) and tamper protection
(audit-only preview on Linux) are left out.

The compliance script and rules now also check behavior monitoring and
cloud-delivered protection.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

images/fedora-intune/defender.yaml

@@ -26,6 +26,15 @@ add-files:
   - ["mdatp-firstboot.service", "/usr/lib/systemd/system/mdatp-firstboot.service"]
   - ["mdatp-firstboot.conf", "/usr/lib/systemd/system/mdatp.service.d/10-firstboot.conf"]
   - ["50-defender.preset", "/usr/lib/systemd/system-preset/50-defender.preset"]
+  # Enforced Defender settings (shown as "[managed]" in `mdatp health`; local
+  # changes are refused): real-time protection, behavior monitoring, PUA
+  # blocking, cloud protection at the "high" block level, automatic updates
+  # and sample submission, a daily quick scan at 12:00 and a weekly full scan
+  # on Wednesday 12:30 (low priority, up to 2 h later at random). Settings
+  # reference: https://learn.microsoft.com/defender-endpoint/linux-preferences
+  # Not set here: network protection (Insiders channels only) and tamper
+  # protection (audit-only preview on Linux).
+  - ["mdatp_managed.json", "/etc/opt/microsoft/mdatp/managed/mdatp_managed.json"]
 
 postprocess:
   - |
@@ -42,5 +51,7 @@ postprocess:
       [[ -f "${pp}" ]] && break
     done
     semodule -n -i "${pp}"
+    # Fail the build on a typo rather than ship a config Defender can't read.
+    python3 -m json.tool /etc/opt/microsoft/mdatp/managed/mdatp_managed.json > /dev/null
     rpm -q --qf '%{POSTIN}' mdatp > /usr/libexec/mdatp-postinst
     chmod 0755 /usr/libexec/mdatp-firstboot /usr/libexec/mdatp-postinst