feat(auth): surface canEdit in the topbar with an access badge

feat(storage): first-class data - no silent failures in the persistence pipeline

feat(editor): show connected collaborators in the top bar

fix(editor): SyncIndicator now reflects hero/settings/citation edits

feat(auth): sign-out button in the editor topbar

fix(editor): SyncIndicator was stuck on "Disconnected" forever

feat(embed-studio): clickable chart list to switch files

fix(embed-studio): contextual empty state and input placeholder

fix(embed): SVG text now follows the iframe theme

feat(embed-studio): make agent-generated charts theme-aware

fix(publish-dialog): show Space URL instead of /published/<doc> path

feat(demo): full showcase polish - mouse cursor, robust selection, HF affiliations

feat(editor): embed studio with data files and agent-aware editing

feat(frontend): editor refresh (embed studio, comment popover, shiki, top bar, hooks, styles)

refactor: remove MUI, unify publisher pipeline, add shared component registry

feat: show real HF username and avatar for connected users

fix: align published article with template design

feat: adopt template CSS architecture, hero/TOC/color alignment

refactor: rename to Science Article Template Editor, remove MDX export, fix settings drawer

chore: initial commit