Update documentation with PHP optimizer and establish development log

DOCUMENTATION UPDATES:

README.md changes:
- Added php-optimizer.sh to performance modules section
- Added 3 new libraries: php-detector.sh, php-analyzer.sh, php-config-manager.sh
- Added comprehensive PHP Configuration Optimizer feature description
- Updated with all capabilities (7-day analysis, OPcache tuning, auto-backup, rollback)

DEVELOPMENT_LOG.md (NEW):
- Comprehensive tracking document for ALL development work
- Detailed documentation of PHP optimizer (Dec 2-3, 2025)
- Component breakdown: 4 files, 2,960 lines, 45 functions
- Complete workflow documentation for Option 4
- Safety features and testing status documented
- Git commit history tracked
- Development guidelines established
- Placeholder sections for Nov 21-30 work to be filled in

DEVELOPMENT GUIDELINES ESTABLISHED:
- NO AI attribution in commits (per user instructions)
- Update DEVELOPMENT_LOG.md with every change
- Track file statistics and testing status
- Document all git commits and decisions

This establishes proper ongoing documentation practices going forward.

README.md

@@ -54,6 +54,7 @@ server-toolkit/
 │   │   ├── hardware-health-check.sh    # Hardware diagnostics
 │   │   ├── mysql-query-analyzer.sh     # MySQL performance analysis
 │   │   ├── network-bandwidth-analyzer.sh # Network analysis
+│   │   ├── php-optimizer.sh            # PHP Configuration Optimizer (NEW!)
 │   │   └── (other performance modules)
 │   │
 │   └── maintenance/                     # 🧹 System Maintenance
@@ -64,7 +65,10 @@ server-toolkit/
 │   ├── system-detect.sh                # System type detection
 │   ├── user-manager.sh                 # User account management
 │   ├── mysql-analyzer.sh               # MySQL utilities
-│   └── reference-db.sh                 # Cross-module intelligence sharing
+│   ├── reference-db.sh                 # Cross-module intelligence sharing
+│   ├── php-detector.sh                 # PHP configuration detection (NEW!)
+│   ├── php-analyzer.sh                 # PHP performance analysis engine (NEW!)
+│   └── php-config-manager.sh           # PHP config backup/restore/modification (NEW!)
 │
 ├── config/                              # Configuration files
 │   ├── settings.conf                   # Main configuration
@@ -125,6 +129,14 @@ source /root/server-toolkit/run.sh
   - Process issue detection (zombies, high CPU/MEM consumers)
   - MySQL performance monitoring
   - Actionable recommendations based on findings
+- **PHP Configuration Optimizer** (NEW!): Per-domain PHP optimization
+  - Analyzes PHP-FPM pool configurations across all domains
+  - Detects max_children issues from 7-day error log history
+  - OPcache hit rate analysis and tuning recommendations
+  - Memory limit optimization based on actual usage
+  - Auto-backup before changes with rollback capability
+  - Graceful PHP-FPM reload for zero downtime
+  - Supports cPanel, InterWorx, Plesk, standalone Apache
 - **Smart Recommendations**: Context-aware suggestions based on findings
 - **Multi-Panel Support**: cPanel, InterWorx, Plesk, standalone Apache