build: port BaseMessage type guards from feat-paysys-poc and bump frms-coe-lib to 8.0.0-rc.3

[Justus-at-Tazama]

Context

frms-coe-lib has been updated to 8.0.0-rc.3. The paysys team already updated logic.service.ts on the feat-paysys-poc branch to use isPacs002Transaction and isBaseMessageTransaction guards. This issue tracks porting those changes to dev with the updated library version.

Changes required

• Bump @tazama-lf/frms-coe-lib to 8.0.0-rc.3
• Port logic.service.ts changes from feat-paysys-poc (type guard pattern for transactionId derivation)
• Update RuleRequest usage to RuleRequest<SupportedTransactionMessage> where applicable
• Build, test, publish rc, raise PR to dev

Notes

The paysys branch already contains the correct pattern:

if (isPacs002Transaction(transaction)) {
  transactionId = transaction.FIToFIPmtSts.GrpHdr.MsgId;
}
if (isBaseMessageTransaction(transaction)) {
  transactionId = transaction.MsgId;
}

New guards isPacs008Transaction, isPain001Transaction, isPain013Transaction are also available in 8.0.0-rc.3 if needed.

Related

Part of the BaseMessage refactor chain. See base-message-refactor.md for full pipeline analysis.