Webview.UtilsFilesystem helpers for locating on-disk assets (HTML/CSS/JS) relative to the running executable, independently of the current working directory.
Directory to resolve on-disk assets against. When launched via dune exec, the executable lives under _build/<context>/, where the source assets are not copied; this maps such a path back to the matching source directory. From an installed location the executable directory is used as-is.