Add session, maintenance, and backup commands

New commands:
- /summarize: Save session decisions/preferences to memory
- /maintain: Configuration maintenance (validate, backup, restore, etc.)

New automation scripts:
- backup.sh: Create timestamped config backup (excludes secrets)
- restore.sh: Restore config from backup (with validation)

Updates:
- component-registry.json: Added new commands
- commands/README.md: Updated with new entries
- automation/README.md: Documented utility scripts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

automation/README.md

@@ -60,6 +60,34 @@ The `scheduler.sh` script wraps Claude CLI invocations:
 - Workflow logs: `~/.claude/logs/workflows/`
 - Journal logs: `journalctl --user -u <service-name>`
 
+## Utility Scripts
+
+| Script | Purpose |
+|--------|---------|
+| `validate-setup.sh` | Validate configuration |
+| `quick-status.sh` | Dashboard status overview |
+| `backup.sh` | Create configuration backup |
+| `restore.sh` | Restore from backup |
+| `generate-registry.py` | Regenerate component registry |
+| `validate-registry.py` | Validate component registry |
+
+### Usage
+
+```bash
+# Validate setup
+./validate-setup.sh
+
+# Quick status
+./quick-status.sh
+
+# Backup
+./backup.sh
+
+# Restore (lists backups, or restores specific file)
+./restore.sh
+./restore.sh ~/.claude/backups/claude-config-TIMESTAMP.tar.gz
+```
+
 ## Maintenance
 
 ```bash