cleanup: Archive old complex scripts and documentation

- Move all old complex backup scripts to old_scripts/
- Archive previous documentation versions
- Clean up temporary files and debian packages
- Update README to focus on new simple system
- Keep only the enhanced simple backup system in main directory

Main directory now contains only:
- simple_backup_gui.py (GUI interface)
- enhanced_simple_backup.sh (CLI interface)
- list_drives.sh (helper)
- simple_backup.sh (basic CLI)
- SIMPLE_BACKUP_README.md (detailed docs)
- README.md (project overview)

old_scripts/README_BACKUP.md

@@ -0,0 +1,49 @@
+# LVM Block-Level Backup Tool
+
+## What This Does
+
+This tool performs a **proper** LVM snapshot backup by:
+
+1. ✅ Creating consistent LVM snapshots of your internal drive
+2. ✅ Cloning entire volumes **block-for-block** to external drive
+3. ✅ Creating an exact, bootable copy of your system
+4. ✅ Using full drive capacity efficiently
+
+## Why This Is Better
+
+- **Fast**: Block-level copying is much faster than file copying
+- **Complete**: Exact bit-for-bit copy including all metadata
+- **Bootable**: External drive can boot your system directly
+- **Space Efficient**: Uses full drive capacity, no filesystem overhead
+- **Consistent**: Snapshots ensure data consistency during backup
+
+## Usage
+
+```bash
+# Simple one-command backup
+sudo ./lvm_block_backup.sh
+```
+
+## Requirements
+
+- Both drives must have LVM setup
+- External drive volume group: `migration-vg`
+- Internal drive volume group: `internal-vg`
+- At least 6GB free space for snapshots
+
+## What Gets Backed Up
+
+- **Root volume**: Complete system, applications, configurations
+- **Home volume**: All user data (including encrypted LUKS)
+- **Boot volume**: Kernels, bootloader, boot configuration
+
+## Result
+
+After backup, your external drive contains an exact copy that can:
+- Boot independently from BIOS/UEFI menu
+- Be mounted to access files
+- Serve as complete system recovery
+
+---
+
+**Note**: The `old_scripts/` directory contains 40+ previous backup attempts that didn't work properly. This single script replaces all of them.