feat(waf): Phase 4 — Packaging, CRS, systemd, sudoers — v1.2.69

- Makefile: edgeguard-waf zu BINARIES hinzugefügt
- deploy/systemd/edgeguard-waf.service: systemd-Unit (User=edgeguard,
  After=postgresql + edgeguard-api, Hardening, ReadWritePaths=/var/log/edgeguard)
- build-package.sh: edgeguard-waf Binary + Service ins .deb
- postinst: OWASP CRS v4.7.0 Download bei Erstinstall nach
  /usr/share/edgeguard/waf/crs/; graceful wenn kein Internet vorhanden
- postinst: edgeguard-waf.service enable + start bei install/upgrade
- postinst: sudoers für start/stop/enable/disable/restart edgeguard-waf.service
- system.go: edgeguard-waf in servicesToCheck + toggleAllowlist

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

deploy/systemd/edgeguard-waf.service

@@ -0,0 +1,32 @@
+[Unit]
+Description=EdgeGuard WAF SPOE Agent (Coraza/OWASP CRS)
+Documentation=https://git.netcell-it.de/projekte/edgeguard-native
+After=network-online.target postgresql.service edgeguard-api.service
+Wants=network-online.target
+Requires=postgresql.service
+
+[Service]
+Type=simple
+User=edgeguard
+Group=edgeguard
+ExecStart=/usr/bin/edgeguard-waf
+Restart=on-failure
+RestartSec=5
+
+# Hardening — WAF agent only needs DB access and one TCP listen socket.
+NoNewPrivileges=true
+ProtectSystem=strict
+ProtectHome=true
+ProtectKernelTunables=true
+ProtectKernelModules=true
+ProtectControlGroups=true
+PrivateTmp=true
+PrivateDevices=true
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+SystemCallFilter=@system-service
+# CRS rules are read from /usr/share/edgeguard/waf/crs/ (read-only, OK).
+# Alerts/logs are written to /var/log/edgeguard/.
+ReadWritePaths=/var/log/edgeguard
+
+[Install]
+WantedBy=multi-user.target