Two multi-window fixes:
- Secondary windows: styled card and underlines. The suggestion card and per-kind underline colors now render correctly in notes opened via "Open in new window" — previously the card appeared unstyled and underlines fell back to editor defaults.
- All windows stay fresh. Settings changes, Add to dictionary, and Disable rule now re-lint every open window, not just the focused one — propagation is near-instant.
Under the hood: style injection and card DOM are now per-window-document; a config-generation subscription lets every editor hear about changes over the plugin bridge; two new two-window e2e specs (both verified red on the pre-fix build, green after); stale-lock race hardening in the e2e guard.