Configure VS Code
Install the extension, open the folder containing xlflow.toml, and configure xlflow.path only when the executable cannot be found on PATH.
Useful settings include xlflow.lsp.enabled, xlflow.lsp.logFile, xlflow.lsp.trace.server, xlflow.lsp.performanceLogging, xlflow.codeLens.enabled, xlflow.run.saveBeforeRun, and xlflow.testing.autoDiscover. Restart the language server after changing the executable path or when an old process is still attached.
The VS Code section describes the user-visible behavior and troubleshooting steps.