Will finish this up and get it merged. Because of how widely this feature is needed, I think we can get it in without the fediverse deletion functionality for now.

Went with client-side resizing for now, and officially announced: https://write.as/updates/now-our-classic-editor-write-as-labs-classic-supports-photo-uploads-directly

One issue: images aren't automatically resized, as they are when uploaded through Snap.as. Instead of doing client-side image resizing here, we should rely on the server: {T851}.

This is live on Write.as now (Classic editor v2)

Currently, this only uploads to a user's personal Snap.as storage space -- which likely isn't the desired behavior for users writing a post on a team / Organizations blog.

That last issue is fixed and deployed on Write.as. Final WriteFreely pull request: #356

This is really the base functionality needed to preserve captions in the migration, and store them alongside images. So right now, these will automatically turn into alt-text that displays in the Snap.as UI -- e.g. the "Share on Write.as" Markdown text here:

Complete and deployed on Write.as.

API is less important right now. But one thing left to fix: photos uploaded to an org shouldn't show up in personal account's Photos list.

WriteFreely PR #444.