Volt CLI: source-available under AGPSL v5.0

Complete infrastructure platform CLI:
- Container runtime (systemd-nspawn)
- VoltVisor VMs (Neutron Stardust / QEMU)
- Stellarium CAS (content-addressed storage)
- ORAS Registry
- GitOps integration
- Landlock LSM security
- Compose orchestration
- Mesh networking

Copyright (c) Armored Gates LLC. All rights reserved.
Licensed under AGPSL v5.0

pkg/license/license.go

@@ -0,0 +1,81 @@
+/*
+Volt Platform — License Management
+Core license types and validation logic
+*/
+package license
+
+import (
+	"fmt"
+	"regexp"
+	"time"
+)
+
+// License represents a Volt platform license
+type License struct {
+	Key          string    `yaml:"key"`
+	Tier         string    `yaml:"tier"` // community, pro, enterprise
+	NodeID       string    `yaml:"node_id"`
+	Organization string    `yaml:"organization"`
+	ActivatedAt  time.Time `yaml:"activated_at"`
+	ExpiresAt    time.Time `yaml:"expires_at"`
+	Token        string    `yaml:"token"` // signed activation token from server
+	Features     []string  `yaml:"features"`
+	Fingerprint  string    `yaml:"fingerprint"`
+	CouponCode   string    `yaml:"coupon_code,omitempty"`   // Promotional code used
+	TrialEndsAt  time.Time `yaml:"trial_ends_at,omitempty"` // Trial expiration
+	IsTrial      bool      `yaml:"is_trial,omitempty"`      // Whether this is a trial license
+}
+
+// IsTrialExpired checks if a trial license has expired.
+// Returns false for non-trial licenses.
+func (l *License) IsTrialExpired() bool {
+	if !l.IsTrial {
+		return false
+	}
+	if l.TrialEndsAt.IsZero() {
+		return false
+	}
+	return time.Now().After(l.TrialEndsAt)
+}
+
+// licenseKeyPattern validates VOLT-{TIER}-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX format
+// Tier prefix: COM (Community), PRO (Professional), ENT (Enterprise)
+// Followed by 6 groups of 4 uppercase hex characters
+var licenseKeyPattern = regexp.MustCompile(`^VOLT-(COM|PRO|ENT)-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}-[A-F0-9]{4}$`)
+
+// ValidateKeyFormat checks if a license key matches the expected format
+func ValidateKeyFormat(key string) error {
+	if !licenseKeyPattern.MatchString(key) {
+		return fmt.Errorf("invalid license key format: expected VOLT-{COM|PRO|ENT}-XXXX-XXXX-XXXX-XXXX-XXXX-XXXX")
+	}
+	return nil
+}
+
+// TierName returns a human-readable tier name
+func TierName(tier string) string {
+	switch tier {
+	case TierCommunity:
+		return "Community"
+	case TierPro:
+		return "Professional"
+	case TierEnterprise:
+		return "Enterprise"
+	default:
+		return "Unknown"
+	}
+}
+
+// DetermineTier determines the tier from a license key prefix
+func DetermineTier(key string) string {
+	if len(key) < 8 {
+		return TierCommunity
+	}
+	switch key[5:8] {
+	case "PRO":
+		return TierPro
+	case "ENT":
+		return TierEnterprise
+	default:
+		return TierCommunity
+	}
+}