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>

commands/maintain.md

@@ -0,0 +1,84 @@
+---
+name: maintain
+description: Configuration maintenance operations (backup, validate, etc.)
+aliases: [maintenance, admin]
+---
+
+# /maintain Command
+
+Configuration maintenance operations.
+
+## Subcommands
+
+| Subcommand | Description |
+|------------|-------------|
+| `validate` | Validate configuration setup |
+| `backup` | Create configuration backup |
+| `restore` | Restore from backup |
+| `registry` | Regenerate component registry |
+| `clean` | Clean up temporary files |
+
+## Usage
+
+```
+/maintain validate    # Run validation checks
+/maintain backup      # Create timestamped backup
+/maintain restore     # List and restore from backups
+/maintain registry    # Regenerate component-registry.json
+/maintain clean       # Remove temp files, old logs
+```
+
+## Implementation
+
+### validate
+
+```bash
+~/.claude/automation/validate-setup.sh
+```
+
+### backup
+
+```bash
+~/.claude/automation/backup.sh
+```
+
+### restore
+
+```bash
+# List backups
+~/.claude/automation/restore.sh
+
+# Restore specific backup
+~/.claude/automation/restore.sh ~/.claude/backups/claude-config-TIMESTAMP.tar.gz
+```
+
+### registry
+
+```bash
+python3 ~/.claude/automation/generate-registry.py
+```
+
+### clean
+
+Remove:
+- `~/.claude/logs/workflows/*.log` older than 30 days
+- `~/.claude/backups/*.tar.gz` beyond last 10
+- `~/.claude/todos/*.json` (managed by Claude Code)
+
+## Output Format
+
+```
+🔧 Maintenance: validate
+
+Running validation...
+[validation output]
+
+✓ Validation complete
+```
+
+## When to Use
+
+- After making configuration changes
+- Before/after major updates
+- Periodically for housekeeping
+- When troubleshooting issues