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/Utils/tc-token-utils.ts

@@ -159,7 +159,10 @@ export async function storeTcTokensFromIqResult({
 				[storageJid]: {
 					...existingEntry,
 					token: Buffer.from(tokenNode.content),
-					timestamp: tokenNode.attrs.t
+					timestamp: tokenNode.attrs.t,
+					// WABA Android: resets real_issue_timestamp to null when storing a new token
+					// (UPDATE wa_trusted_contacts_send SET real_issue_timestamp=null)
+					realIssueTimestamp: null
 				}
 			}
 		})