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/x_ansible/roles/php/tasks/main.yml

@@ -0,0 +1,33 @@
+---
+# PHP Installation und Konfiguration
+
+- name: Stelle sicher, dass das PHP-Docker-Verzeichnis existiert
+  file:
+    path: "{{ deploy_root }}/docker/php"
+    state: directory
+    owner: "{{ deploy_user }}"
+    group: "{{ deploy_user }}"
+    mode: '0755'
+
+- name: Erstelle einfache PHP-Dockerfile
+  copy:
+    dest: "{{ deploy_root }}/docker/php/Dockerfile-simple"
+    content: |
+      FROM php:8.1-fpm
+
+      RUN apt-get update && apt-get install -y \
+          git \
+          unzip \
+          libzip-dev \
+          zip \
+          && docker-php-ext-install zip pdo pdo_mysql \
+          && docker-php-ext-install opcache \
+          && apt-get clean \
+          && rm -rf /var/lib/apt/lists/*
+
+      WORKDIR /var/www/html
+
+      CMD ["php-fpm"]
+    owner: "{{ deploy_user }}"
+    group: "{{ deploy_user }}"
+    mode: '0644'