Dropping a link out of a browser onto the Desktop composer toasted
"Drop files — Could not attach <title>.url" and attached nothing. A browser
link drag carries `text/uri-list` plus, on Windows, a virtual `<title>.url`
shortcut File (`.webloc` on macOS) that has no on-disk path. The drop
pipeline only understood Files and in-app paths: the path-less stub went to
the upload branch, `attachContextFilePath('')` returned false, and the user
had to copy/paste the URL instead.
`extractDroppedFiles` now reads `text/uri-list`, drops the path-less
shortcut stub when a link is present, and emits `{ url }` entries;
`droppedFileInlineRef` turns them into the same `@url:` chip the "+ → Add
URL" dialog and paste-linkify produce, so every drop surface (composer
form, text box, conversation area, edit composer) gets it for free.
`dragHasAttachments` accepts `text/uri-list` so the form-level enter/over
handlers claim the drag at all. A path-less *image* dragged off a web page
keeps its bytes and wins over the link to its own src.
teknium1
2179a279ae