feat: Add machinectl management and backup/restore system

- Create cfg/aios-ctl.zsh with machinectl control commands
  - aios-start/stop/shell/login for basic operations
  - aios-backup to save current state to aiosback
  - aios-reset to restore from backup (preserves config files)
  - aios-update to update packages in backup
- Create cfg/install.sh for automated installation
  - Extracts tarball to /var/lib/machines/aios
  - Creates systemd-nspawn configuration
  - Automatically creates initial backup image (aiosback)
- Include aios-ctl.zsh in container at /opt/aios-ctl.zsh
- Include install.sh in tarball for easy deployment
- Config files in ~/.config/syui/ai are bind-mounted and preserved across resets

.github/workflows/release.yml

@@ -93,7 +93,10 @@ jobs:
           sleep 2
           arch-chroot root.x86_64/var/lib/machines/arch /bin/sh -c 'pkill aigpt'
           arch-chroot root.x86_64/var/lib/machines/arch /bin/sh -c 'if command -v sqlite3 &>/dev/null; then sqlite3 /root/.config/syui/ai/gpt/memory.db "PRAGMA journal_mode=WAL; PRAGMA synchronous=NORMAL;"; fi'
-          tar -zcvf aios-bootstrap.tar.gz root.x86_64/
+          cp -rf ./cfg/aios-ctl.zsh root.x86_64/var/lib/machines/arch/opt/aios-ctl.zsh
+          cp -rf ./cfg/install.sh ./install.sh
+          chmod +x ./install.sh
+          tar -zcvf aios-bootstrap.tar.gz root.x86_64/ install.sh
           tar -C ./root.x86_64 -c . | docker import - ${{ env.IMAGE_NAME }}
           echo "${{ env.DOCKER_TOKEN }}" | docker login -u syui --password-stdin
           docker push ${{ env.IMAGE_NAME }}