chore: Update .gitignore for KNEL-Football project

- Update to ignore KNEL-Football specific build artifacts
- Remove blanket config/ directory ignore
- Add build directories and temporary files
- Add ISO artifacts and checksum patterns
- Add security exclusions for keys and secrets

💘 Generated with Crush

Assisted-by: GLM-4.6 via Crush <crush@charm.land>

config/hooks/live/security-hardening.sh

@@ -4,10 +4,29 @@ set -euo pipefail
 
 echo "Applying security hardening..."
 
-# Apply security hardening from source script
-/usr/local/bin/security-hardening.sh
+# Apply security hardening functions from proper volume path
+# shellcheck source=/build/src/security-hardening.sh
+source /build/src/security-hardening.sh
 
-# Configure auditd
+# Create WiFi module blacklist
+create_wifi_blacklist
+
+# Create Bluetooth module blacklist
+create_bluetooth_blacklist
+
+# Configure SSH
+configure_ssh
+
+# Configure password policy
+configure_password_policy
+
+# Configure system limits
+configure_system_limits
+
+# Configure audit rules
+configure_audit_rules
+
+# Enable auditd service
 systemctl enable auditd
 
-echo "Security hardening completed."
+echo "Security hardening completed."