Switch to HWE kernel and improve boot reliability

- Install linux-image-generic-hwe-24.04 (6.14+) for RTL8125BP XID 689 support
- Enable noble-updates and noble-security repositories in chroot
- Add explicit rdinit=/init and panic=-1 kernel parameters for boot robustness
- Rename CLAUDE.md to AGENTS.md for broader AI assistant coverage
- Document dracut module alternative and verify-image.sh utility
- Clean up initramfs netboot script comments

build-image.sh

@@ -53,13 +53,27 @@ echo "keyboard-configuration keyboard-configuration/variant select Norwegian" |
 echo "locales locales/default_environment_locale select en_US.UTF-8" | debconf-set-selections
 echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8, nb_NO.UTF-8 UTF-8" | debconf-set-selections
 
-# Update and upgrade
+# Enable noble-updates and noble-security for HWE kernel
+cat > /etc/apt/sources.list.d/ubuntu.sources << 'SOURCES'
+Types: deb
+URIs: http://archive.ubuntu.com/ubuntu
+Suites: noble noble-updates noble-backports
+Components: main universe multiverse
+Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
+
+Types: deb
+URIs: http://security.ubuntu.com/ubuntu
+Suites: noble-security
+Components: main universe multiverse
+Signed-By: /usr/share/keyrings/ubuntu-archive-keyring.gpg
+SOURCES
+
 apt-get update
 apt-get upgrade -y
 
-# Install essential packages
+# Install HWE kernel (6.14+) for RTL8125BP XID 689 support
 apt-get install -y \
-    linux-image-generic \
+    linux-image-generic-hwe-24.04 \
     linux-firmware \
     busybox-initramfs \
     initramfs-tools \