internal: incomplete vault systems behind feature flag (#2340)

packages/models/src/Domain/Local/RootKey/RootKeyContent.ts

@@ -1,3 +1,4 @@
+import { PkcKeyPair } from '@standardnotes/sncrypto-common'
 import { ItemContent } from '../../Abstract/Content/ItemContent'
 import { ProtocolVersion, AnyKeyParamsContent } from '@standardnotes/common'
 
@@ -7,6 +8,9 @@ export interface RootKeyContentSpecialized {
   serverPassword?: string
   dataAuthenticationKey?: string
   keyParams: AnyKeyParamsContent
+
+  encryptionKeyPair?: PkcKeyPair
+  signingKeyPair?: PkcKeyPair
 }
 
 export type RootKeyContent = RootKeyContentSpecialized & ItemContent