fix(tctoken): align lifecycle with WABA Android behavior (#256)

- Error 463 (MissingTcToken): add getPrivacyTokens() re-fetch before retry
- Error 479 (SmaxInvalid): add getPrivacyTokens() re-fetch (fire-and-forget)
- Add realIssueTimestamp field matching wa_trusted_contacts_send schema
- Session refresh reissue: store IQ result + persist senderTimestamp/realIssueTimestamp

src/Types/Auth.ts

@@ -80,7 +80,7 @@ export type SignalDataTypeMap = {
 	'app-state-sync-version': LTHashState
 	'lid-mapping': string
 	'device-list': string[]
-	tctoken: { token: Buffer; timestamp?: string; senderTimestamp?: number }
+	tctoken: { token: Buffer; timestamp?: string; senderTimestamp?: number; realIssueTimestamp?: number | null }
 	/** Identity key for Signal Protocol - used for detecting contact reinstalls */
 	'identity-key': Uint8Array
 }