feat: Revamp Plex backup system to streamline archive structure and enhance validation processes

docs/enhanced-plex-backup.md

@@ -302,7 +302,38 @@ The script includes a comprehensive testing framework (`test-plex-backup.sh`):
 
 ## Backup Strategy
 
-The enhanced script implements a robust backup strategy:
+The enhanced script implements a robust backup strategy with a streamlined tar.gz-only structure:
+
+### Archive-Only Directory Structure
+
+The new backup system eliminates intermediate dated directories and stores only compressed archives:
+
+```bash
+/mnt/share/media/backups/plex/
+├── plex-backup-20250125_143022.tar.gz    # Latest backup
+├── plex-backup-20250124_143011.tar.gz    # Previous backup
+├── plex-backup-20250123_143008.tar.gz    # Older backup
+└── logs/
+    ├── backup_log_20250125_143022.md
+    ├── plex-backup-performance.json
+    └── plex-backup.json
+```
+
+### Archive Naming Convention
+
+Backup files follow the pattern: `plex-backup-YYYYMMDD_HHMMSS.tar.gz`
+
+- **YYYYMMDD**: Date of backup (e.g., 20250125)
+- **HHMMSS**: Time of backup (e.g., 143022)
+- **tar.gz**: Compressed archive format
+
+### Key Improvements
+
+1. **Direct Archive Creation**: No intermediate directories required
+2. **Efficient Storage**: Only compressed files stored permanently
+3. **Easy Identification**: Timestamp-based naming for sorting
+4. **Legacy Cleanup**: Automatic removal of old dated directories
+5. **Archive Validation**: Integrity checking of compressed files
 
 ### 3-2-1 Backup Rule