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>

internal/providers/factory.go

@@ -0,0 +1,40 @@
+package providers
+
+import (
+	"fmt"
+)
+
+// NewProvider creates a cloud provider by name
+func NewProvider(name string, config map[string]string) (CloudProvider, error) {
+	switch name {
+	case "exoscale":
+		apiKey := config["api_key"]
+		apiSecret := config["api_secret"]
+		if apiKey == "" || apiSecret == "" {
+			return nil, fmt.Errorf("exoscale requires api_key and api_secret")
+		}
+		return NewExoscaleProvider(apiKey, apiSecret)
+
+	case "cloudscale":
+		token := config["token"]
+		if token == "" {
+			return nil, fmt.Errorf("cloudscale requires token")
+		}
+		return NewCloudscaleProvider(token)
+
+	case "hetzner":
+		token := config["token"]
+		if token == "" {
+			return nil, fmt.Errorf("hetzner requires token")
+		}
+		return NewHetznerProvider(token)
+
+	default:
+		return nil, fmt.Errorf("unknown provider: %s", name)
+	}
+}
+
+// SupportedProviders returns list of supported cloud providers
+func SupportedProviders() []string {
+	return []string{"exoscale", "cloudscale", "hetzner"}
+}