Initial commit: Disaster recovery CLI tool

A Go-based CLI tool for recovering servers from backups to new cloud VMs.

Features:
- Multi-cloud support: Exoscale, Cloudscale, Hetzner Cloud
- Backup sources: Local filesystem, Hetzner Storage Box
- 6-stage restore pipeline with /etc whitelist protection
- DNS migration with safety checks and auto-rollback
- Dry-run by default, requires --yes to execute
- Cloud-init for SSH key injection

Packages:
- cmd/recover-server: CLI commands (recover, migrate-dns, list, cleanup)
- internal/providers: Cloud provider implementations
- internal/backup: Backup source implementations
- internal/restore: 6-stage restore pipeline
- internal/dns: Exoscale DNS management
- internal/ui: Prompts, progress, dry-run display
- internal/config: Environment and host configuration

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

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

.env.example

@@ -0,0 +1,16 @@
+# Exoscale credentials
+EXOSCALE_API_KEY=your-exoscale-api-key
+EXOSCALE_API_SECRET=your-exoscale-api-secret
+
+# Cloudscale.ch credentials
+CLOUDSCALE_API_TOKEN=your-cloudscale-token
+
+# Hetzner Cloud credentials
+HETZNER_API_KEY=your-hetzner-api-key
+
+# Hetzner Storage Box (for backups)
+HETZNER_STORAGEBOX_USER=u480813
+HETZNER_STORAGEBOX_HOST=u480813.your-storagebox.de
+
+# Local backup path
+LOCAL_BACKUP_PATH=/srv/backups