Refactor vault functionality to dedicated package, fix import cycles with interface pattern, fix tests

internal/secret/metadata.go

@@ -0,0 +1,32 @@
+package secret
+
+import (
+	"time"
+)
+
+// VaultMetadata contains information about a vault
+type VaultMetadata struct {
+	Name        string    `json:"name"`
+	CreatedAt   time.Time `json:"createdAt"`
+	Description string    `json:"description,omitempty"`
+}
+
+// UnlockKeyMetadata contains information about an unlock key
+type UnlockKeyMetadata struct {
+	ID        string    `json:"id"`
+	Type      string    `json:"type"` // passphrase, pgp, keychain
+	CreatedAt time.Time `json:"createdAt"`
+	Flags     []string  `json:"flags,omitempty"`
+}
+
+// SecretMetadata contains information about a secret
+type SecretMetadata struct {
+	Name      string    `json:"name"`
+	CreatedAt time.Time `json:"createdAt"`
+	UpdatedAt time.Time `json:"updatedAt"`
+}
+
+// Configuration represents the global configuration
+type Configuration struct {
+	DefaultVault string `json:"defaultVault,omitempty"`
+}