Builds on boltless' image upload.
- the toolbar Image button opens the native file picker when the editor can upload, and keeps inserting
otherwise - the alt text is inserted as "Image" (or the selected text) and left selected so it can be typed over
- images can also be pasted
- a file over 1 MB is shrunk in the browser (resized, re-encoded as jpeg or webp) until it fits
- formats the browser can decode but the lexicon doesn't accept are converted the same way
- svg is rasterized, so no svg is ever uploaded or served
- a gif over 1 MB, an unreadable file or an image that can't be shrunk under 1 MB shows an error alert under the editor instead of an html comment in the body
- fixes the prettier failure in
comment.ts
Not covered: nothing serves /blob/<did>/<cid> in this repo, so saved images only render once that exists.
