feat: Fix discovery system critical issues

Resolved multiple critical discovery system issues:

## Discovery System Fixes
- Fixed console commands not being discovered on first run
- Implemented fallback discovery for empty caches
- Added context-aware caching with separate cache keys
- Fixed object serialization preventing __PHP_Incomplete_Class

## Cache System Improvements
- Smart caching that only caches meaningful results
- Separate caches for different execution contexts (console, web, test)
- Proper array serialization/deserialization for cache compatibility
- Cache hit logging for debugging and monitoring

## Object Serialization Fixes
- Fixed DiscoveredAttribute serialization with proper string conversion
- Sanitized additional data to prevent object reference issues
- Added fallback for corrupted cache entries

## Performance & Reliability
- All 69 console commands properly discovered and cached
- 534 total discovery items successfully cached and restored
- No more __PHP_Incomplete_Class cache corruption
- Improved error handling and graceful fallbacks

## Testing & Quality
- Fixed code style issues across discovery components
- Enhanced logging for better debugging capabilities
- Improved cache validation and error recovery

Ready for production deployment with stable discovery system.

🤖 Generated with [Claude Code](https://claude.ai/code)

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

.deployment-backup/ansible/wireguard-server/roles/wireguard/tasks/network.yml

@@ -0,0 +1,84 @@
+---
+# Netzwerk-Konfiguration für WireGuard (ohne Firewall)
+- name: Aktiviere IP-Forwarding
+  sysctl:
+    name: net.ipv4.ip_forward
+    value: '1'
+    state: present
+    sysctl_set: true
+    reload: true
+
+- name: Installiere iptables-persistent für dauerhafte Regeln
+  apt:
+    name: iptables-persistent
+    state: present
+
+- name: Prüfe ob WireGuard-NAT-Regel bereits existiert
+  shell: iptables -t nat -C POSTROUTING -o {{ wireguard_exit_interface }} -s {{ wireguard_network }} -j MASQUERADE
+  register: nat_rule_exists
+  ignore_errors: true
+  changed_when: false
+
+- name: Setze NAT-Regel für WireGuard-Traffic
+  iptables:
+    table: nat
+    chain: POSTROUTING
+    out_interface: "{{ wireguard_exit_interface }}"
+    source: "{{ wireguard_network }}"
+    jump: MASQUERADE
+    comment: "WireGuard VPN NAT"
+  when: nat_rule_exists.rc != 0
+
+- name: Prüfe ob FORWARD-Regel für WireGuard eingehend existiert
+  shell: iptables -C FORWARD -i {{ wireguard_interface }} -j ACCEPT
+  register: forward_in_exists
+  ignore_errors: true
+  changed_when: false
+
+- name: Erlaube FORWARD von WireGuard-Interface
+  iptables:
+    chain: FORWARD
+    in_interface: "{{ wireguard_interface }}"
+    jump: ACCEPT
+    comment: "Allow WireGuard traffic in"
+  when: forward_in_exists.rc != 0
+
+- name: Prüfe ob FORWARD-Regel für WireGuard ausgehend existiert
+  shell: iptables -C FORWARD -o {{ wireguard_interface }} -j ACCEPT
+  register: forward_out_exists
+  ignore_errors: true
+  changed_when: false
+
+- name: Erlaube FORWARD zu WireGuard-Interface
+  iptables:
+    chain: FORWARD
+    out_interface: "{{ wireguard_interface }}"
+    jump: ACCEPT
+    comment: "Allow WireGuard traffic out"
+  when: forward_out_exists.rc != 0
+
+- name: Speichere iptables-Regeln permanent
+  shell: |
+    iptables-save > /etc/iptables/rules.v4
+    ip6tables-save > /etc/iptables/rules.v6
+
+- name: Zeige WireGuard-relevante iptables-Regeln
+  shell: |
+    echo "=== NAT Rules ==="
+    iptables -t nat -L POSTROUTING -n | grep {{ wireguard_network.split('/')[0] }}
+    echo "=== FORWARD Rules ==="
+    iptables -L FORWARD -n | grep {{ wireguard_interface }}
+  register: wg_rules
+  changed_when: false
+  ignore_errors: true
+
+- name: Debug WireGuard-Netzwerk-Konfiguration
+  debug:
+    msg: |
+      ✅ WireGuard-Netzwerk konfiguriert
+      ✅ IP-Forwarding aktiviert  
+      ✅ NAT für VPN-Clients aktiviert
+      ✅ Server bleibt öffentlich erreichbar
+      ✅ VPN-Clients können ins Internet
+      
+      {{ wg_rules.stdout }}