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/remove-client.yml

@@ -0,0 +1,51 @@
+---
+- name: Remove WireGuard Client
+  hosts: vpn
+  become: true
+  gather_facts: false
+  
+  vars_prompt:
+    - name: client_name
+      prompt: "Client-Name zum Entfernen"
+      private: false
+  
+  tasks:
+    - name: Validiere Eingaben
+      fail:
+        msg: "client_name muss angegeben werden"
+      when: client_name | length == 0
+    
+    - name: Prüfe ob Client existiert
+      stat:
+        path: /etc/wireguard/clients/{{ client_name }}.conf
+      register: client_exists
+    
+    - name: Fehler wenn Client nicht existiert
+      fail:
+        msg: "Client {{ client_name }} existiert nicht!"
+      when: not client_exists.stat.exists
+    
+    - name: Entferne Client aus Server-Konfiguration
+      blockinfile:
+        path: /etc/wireguard/wg0.conf
+        marker: "# {mark} {{ client_name }}"
+        state: absent
+    
+    - name: Lösche Client-Dateien
+      file:
+        path: "{{ item }}"
+        state: absent
+      loop:
+        - /etc/wireguard/clients/{{ client_name }}-private.key
+        - /etc/wireguard/clients/{{ client_name }}-public.key
+        - /etc/wireguard/clients/{{ client_name }}.conf
+        - /etc/wireguard/clients/{{ client_name }}-psk.key
+    
+    - name: Starte WireGuard neu
+      systemd:
+        name: wg-quick@wg0
+        state: restarted
+    
+    - name: Bestätige Entfernung
+      debug:
+        msg: "✅ Client {{ client_name }} wurde erfolgreich entfernt."