One circular FAB (peer-count badge) replaces the top-right overlay row:
draggable anywhere (pointer capture, 4px click-vs-drag threshold — the
comment-pin pattern), position persisted in localStorage, panel opens
toward screen center and stacks composable sections — roster, source chip,
view-only pill, follow row, comments, chrome toggle. Renders at z-50 above
everything (decided: covers wx dialogs; trivially dismissed via click-away/
Esc/drag). CommentLayer portals its bar + list panel into the menu's
comments slot; pins/popovers/composer/click-catcher stay canvas-anchored.
The FAB is the chrome-hidden survivor. e2e specs updated with an
openOverlayMenu helper (panel is closed by default, click-away closes it).
NOTE: Playwright suites updated but not executed here (no local WASM
artifacts) — verify on CI / next session.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01A42xfPFNdfsUt9eowkC9eM
f4d3c3f146