Fix SSH host keys generation for live CD and installed system

- Add generate-ssh-keys.hook.chroot for live CD build
- Generate RSA, ECDSA, and Ed25519 SSH host keys during build
- Add SSH key generation to auto-installer for installed system
- Remove existing keys before generating new ones
- Fix 'no hostkeys available' SSH server error
- SSH server can now start properly on both live CD and installed system

config/hooks/live/generate-ssh-keys.hook.chroot

+#!/bin/bash
+
+# Generate SSH host keys for live CD
+# This ensures SSH server can start properly
+
+set -e
+
+echo "Generating SSH host keys..."
+
+# Remove any existing host keys
+rm -f /etc/ssh/ssh_host_*_key*
+rm -f /etc/ssh/ssh_host_*_key*.pub
+
+# Generate new SSH host keys
+ssh-keygen -q -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ""
+ssh-keygen -q -t ecdsa -b 521 -f /etc/ssh/ssh_host_ecdsa_key -N ""
+ssh-keygen -q -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ""
+
+echo "SSH host keys generated successfully"
\ No newline at end of file

config/includes.chroot/usr/local/bin/auto-installer.sh

@@ -719,10 +719,19 @@ NETEOF
         print_status "No network configuration to apply - using defaults"
     fi
 
+    # Generate SSH host keys for installed system
+    print_status "Generating SSH host keys for installed system..."
+    # Remove any existing host keys
+    rm -f "$TARGET_MOUNT/etc/ssh/ssh_host_*_key"*
+    # Generate new SSH host keys
+    chroot "$TARGET_MOUNT" ssh-keygen -q -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N "" || true
+    chroot "$TARGET_MOUNT" ssh-keygen -q -t ecdsa -b 521 -f /etc/ssh/ssh_host_ecdsa_key -N "" || true
+    chroot "$TARGET_MOUNT" ssh-keygen -q -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N "" || true
+
     # Remove live-specific configurations
     rm -f "$TARGET_MOUNT/etc/systemd/system/getty@tty1.service.d/live-config.conf" 2>/dev/null || true
     rm -rf "$TARGET_MOUNT/lib/live" 2>/dev/null || true
-    
+
     print_status "Target system configuration completed"
 }