A R R R AssociatesARRR GST Operator Agent 1.0.1 Purpose - Runs only on the GST operator's Windows workstation. - Listens only on 127.0.0.1:8791. - Exposes a trusted local HTTPS endpoint at https://localhost:8791. - Opens visible Chrome/Edge for GST Portal authentication and return download. - Autofills the selected Credential Vault username/password supplied through the ERP short-lived job token. - CAPTCHA/OTP remains interactive with the operator. - Does not run Tally and does not hold the client storage. - Completed GST packages continue through the ERP to the already configured Local Storage Agent. Install 1. Extract the downloaded ZIP. 2. Run PowerShell in the extracted ARRR_GST_Operator_Agent folder: powershell.exe -NoProfile -ExecutionPolicy Bypass -File .\install_gst_operator_agent.ps1 3. The installer creates a localhost TLS certificate and trusts it only for the current Windows user. 4. Verify https://localhost:8791/api/status. 5. Refresh the ERP GST Return Reconciliation page. Upgrade from 1.0.0 - Download the current agent ZIP from ERP and run install_gst_operator_agent.ps1 again. - The installer stops the old HTTP listener, replaces the runtime, installs the trusted localhost certificate and starts v1.0.1 over HTTPS. Uninstall - Run uninstall_gst_operator_agent.ps1 from the installed/downloaded package. - The installer-created certificate is also removed from the current user's trusted root store.