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/base-security/tasks/ssh-hardening.yml

@@ -0,0 +1,119 @@
+---
+# SSH Hardening Configuration
+
+- name: Create SSH banner
+  copy:
+    content: |
+      **************************************************************************
+      * WARNING: AUTHORIZED ACCESS ONLY                                       *
+      **************************************************************************
+      * This system is for authorized users only. All activities are logged  *
+      * and monitored. Unauthorized access is prohibited and may result in    *
+      * civil and/or criminal penalties.                                      *
+      *                                                                        *
+      * Custom PHP Framework - {{ domain_name }}                              *
+      * Environment: {{ environment | upper }}                                *
+      **************************************************************************
+    dest: "{{ ssh_banner }}"
+    owner: root
+    group: root
+    mode: '0644'
+  notify: restart ssh
+  tags:
+    - ssh
+    - banner
+
+- name: Generate strong SSH host keys
+  command: ssh-keygen -t {{ item }} -f /etc/ssh/ssh_host_{{ item }}_key -N ""
+  args:
+    creates: /etc/ssh/ssh_host_{{ item }}_key
+  loop:
+    - ed25519
+    - ecdsa
+    - rsa
+  notify: restart ssh
+  tags:
+    - ssh
+    - keys
+
+- name: Set correct permissions on SSH host keys
+  file:
+    path: /etc/ssh/ssh_host_{{ item }}_key
+    owner: root
+    group: root
+    mode: '0600'
+  loop:
+    - ed25519
+    - ecdsa
+    - rsa
+  tags:
+    - ssh
+    - keys
+    - permissions
+
+- name: Configure SSH daemon
+  template:
+    src: sshd_config.j2
+    dest: /etc/ssh/sshd_config
+    owner: root
+    group: root
+    mode: '0644'
+    backup: true
+  notify: restart ssh
+  tags:
+    - ssh
+    - config
+
+- name: Create SSH client configuration
+  template:
+    src: ssh_config.j2
+    dest: /etc/ssh/ssh_config
+    owner: root
+    group: root
+    mode: '0644'
+    backup: true
+  tags:
+    - ssh
+    - config
+
+- name: Ensure SSH service is enabled and running
+  service:
+    name: ssh
+    state: started
+    enabled: true
+  tags:
+    - ssh
+    - service
+
+- name: Configure SSH authorized keys for deploy user
+  authorized_key:
+    user: "{{ ansible_user }}"
+    state: present
+    key: "{{ lookup('file', '~/.ssh/id_rsa_deploy.pub') }}"
+    exclusive: "{{ ssh_authorized_keys_exclusive }}"
+  when: ansible_user != 'root'
+  tags:
+    - ssh
+    - keys
+    - users
+
+- name: Remove default SSH keys for security
+  file:
+    path: "{{ item }}"
+    state: absent
+  loop:
+    - /etc/ssh/ssh_host_dsa_key
+    - /etc/ssh/ssh_host_dsa_key.pub
+  tags:
+    - ssh
+    - keys
+    - cleanup
+
+- name: Verify SSH configuration syntax
+  command: sshd -t
+  register: ssh_config_test
+  changed_when: false
+  failed_when: ssh_config_test.rc != 0
+  tags:
+    - ssh
+    - validation