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/config/hosts.go

@@ -0,0 +1,60 @@
+package config
+
+// HostConfig defines a recoverable host
+type HostConfig struct {
+	Name      string   // Short name (proton, elektron, etc.)
+	FQDN      string   // Full domain name
+	DNSZone   string   // DNS zone for A/AAAA records
+	Services  []string // Docker services to restore
+	BackupDir string   // Subdirectory in backup source
+}
+
+// KnownHosts contains all configured hosts
+var KnownHosts = map[string]HostConfig{
+	"proton": {
+		Name:      "proton",
+		FQDN:      "proton.obr.sh",
+		DNSZone:   "obr.sh",
+		Services:  []string{"gitea", "traefik", "portainer"},
+		BackupDir: "proton",
+	},
+	"photon": {
+		Name:      "photon",
+		FQDN:      "photon.obnh.io",
+		DNSZone:   "obnh.io",
+		Services:  []string{"gitea", "nginx"},
+		BackupDir: "photon",
+	},
+	"elektron": {
+		Name:      "elektron",
+		FQDN:      "elektron.obr.sh",
+		DNSZone:   "obr.sh",
+		Services:  []string{"gitea", "dns", "monitoring"},
+		BackupDir: "elektron",
+	},
+	"fry": {
+		Name:      "fry",
+		FQDN:      "fry.obr.sh",
+		DNSZone:   "obr.sh",
+		Services:  []string{"mastodon", "gitea", "traefik"},
+		BackupDir: "fry",
+	},
+}
+
+// GetHost returns host config by name
+func GetHost(name string) (*HostConfig, bool) {
+	h, ok := KnownHosts[name]
+	if !ok {
+		return nil, false
+	}
+	return &h, true
+}
+
+// ListHosts returns all known host names
+func ListHosts() []string {
+	hosts := make([]string, 0, len(KnownHosts))
+	for name := range KnownHosts {
+		hosts = append(hosts, name)
+	}
+	return hosts
+}