* feat(chat): attach images by dropping them on the chat
Images could be attached with the attach button or by pasting, but a
drop on the chat did nothing: the window's document drop handler left
images to the canvas, so they were dropped silently.
Images dropped anywhere on the chat panel now attach, through the same
path as the attach button and paste, with the same limits and errors.
While images are dragged over the panel, an outline over the composer
says where they go, or why they cannot be attached while a reply runs or
four images are already attached. SVG images are drawn as PNGs, since
vision models take raster images. A drag without images, such as a
.fig, is left to the window, which opens documents.
The canvas and the chat share AppDropOverlay, a typed feedback component
with a light tint over surfaces and a cover over fields.
* fix(chat): style tables, menus, and link prompts in AI replies
vue-stream-markdown drew tables with semibold, filled rows at 14px, with
copy, download, and fullscreen buttons above each; its tooltips doubled
with the browser's, and the link confirmation it teleports out of the
message had no app colors, since the token mapping sat on the message
element only.
The token mapping now lives in markdown.css on the renderer's
.stream-markdown elements, so teleported dialogs and menus use app
colors. Tables use regular weight, a light header, and the chat density's
size, with copy as their only action; task items show their checkbox in
place of the bullet; the copy menu and link prompt follow the app's
menus and dialogs. Hover labels use the app's tooltip, while click menus
keep the renderer's. Links no longer request each site's favicon.
* fix(chat): keep an SVG drawn after sending out of the next message
Drawing a dropped SVG as PNG takes a moment. A message sent or cleared
meanwhile no longer gets the image added to the following draft: each
draft has a generation that sending and clearing advance, and an image
finished for an earlier one is dropped.