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/infrastructure/roles/nginx-proxy/handlers/main.yml

@@ -0,0 +1,53 @@
+---
+# Nginx Proxy Role Handlers
+
+- name: restart nginx
+  service:
+    name: "{{ nginx_service }}"
+    state: restarted
+  listen: restart nginx
+
+- name: reload nginx
+  service:
+    name: "{{ nginx_service }}"
+    state: reloaded
+  listen: reload nginx
+
+- name: start nginx
+  service:
+    name: "{{ nginx_service }}"
+    state: started
+    enabled: true
+  listen: start nginx
+
+- name: stop nginx
+  service:
+    name: "{{ nginx_service }}"
+    state: stopped
+  listen: stop nginx
+
+- name: validate nginx config
+  command: nginx -t
+  register: nginx_config_test
+  changed_when: false
+  failed_when: nginx_config_test.rc != 0
+  listen: validate nginx config
+
+- name: reload systemd
+  systemd:
+    daemon_reload: true
+  listen: reload systemd
+
+- name: renew letsencrypt certificates
+  command: certbot renew --quiet
+  listen: renew letsencrypt certificates
+  when: letsencrypt_enabled | bool
+
+- name: update nginx status
+  uri:
+    url: "http://localhost/{{ nginx_status_location }}"
+    method: GET
+    status_code: 200
+  listen: update nginx status
+  when: nginx_status_enabled | bool
+  ignore_errors: true