feat: referee rework — paper context injection, grounded critique, concrete checks, caveat ban

feat: equation rendering — heuristic detector, PNG clip, anchor to paragraph, Reader display

fix: timer cleanup on unmount in MarginNote/NotebookDrawer; wire live userNotes/paperNote into onSaveSession

feat: reader notes — margin note cards, notebook drawer, paper-level note, export

feat: in-text citations — splitCitations, cite spans, slim ref popover, muted styling

feat: retrieved-works preference, text input, beacon rename

fix: scrollable popovers; default annotation mode is historical context

feat: figure mention popovers with caption annotator

feat: sessions, autosave, display preferences

fix: move generate calls out of setState updaters

feat: streaming annotation generation and annotator panel

feat: reader screen ported with real data flow

fix: restore screen flex centering; skip button only when result ready

feat: upload and pipeline screens wired to real backend

feat: scaffold Vite frontend with ported prototype CSS