26952ae0d9
- POST /api/me/avatar/url stores the https link (users.avatar_link) instead of downloading it; GET /api/me/avatar and /api/users/:id/avatar answer 302 to it (no referrer). Link rules: https, no userinfo, <= 2048 chars, no localhost or private/reserved IP literal. Upload and link replace each other. - Settings -> Account first loads the link as an embedded image and refuses one this browser cannot show: a picture behind a login (Mattermost's /api/v4/users/<id>/image) gets no cookie cross-site and 401s. - Files sidebar: each workspace under its owner's home, chevrons remembered per browser (agenthub.files.homesOpen); ownerless ones stay flat.