Add comprehensive Wiki documentation for issues #166-#179 Created 4 new Wiki pages documenting recent improvements: 1. PHP82-Compatibility.md (#166) - mysqlnd driver support - PHP 8.2.4+ compatibility - Version detection 2. Security-Hardening.md (#172, #174, #179) - SQL injection prevention - CSRF protection - Input validation - Security best practices 3. Code-Quality-Improvements.md (#170, #178, #169) - UI text corrections - Template URL refactoring - Context variables - Code maintainability 4. Requirements-Search-Filter.md (#164) - Context parameter passing - Search workflow - Testing procedures All pages include: - Problem description - Solution implementation - Code examples - Testing guidance - Related documentation links Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>