v1.5.18

New: click the field-definitions button on any datasource in the Tableau Tools sidebar to generate fields.d.twbl in your workspace root from that datasource's fields. The language server loads and hot-reloads this file, so hover/completion immediately know your workbook's real fields. Per-datasource sections merge — regenerating one datasource leaves the others intact.

Install: code --install-extension tableau-language-support-1.5.18.vsix --force