Review Checklist Navigation & FSR Export Improvements

Auto-navigate to citations on card expand: Expanding a review checklist prompt card now automatically scrolls the PDF to the card's first citation — flagged findings are prioritized, and the lowest page number is selected first when multiple citations exist.
Single-citation highlight: Only one citation is highlighted in the PDF at a time. Clicking a different finding row moves the highlight to that citation, making it easier to trace individual findings without visual clutter.
Redesigned FSR export cover sheet: The annotated PDF export cover sheet has a new layout and typography (IBM Plex Mono tick marks), clickable rows that link directly to relevant findings, and now includes the Review Summary section.

Foot/Crossfoot action buttons always visible: Save, Reset, and Apply are now rendered inline at the bottom of the calculator card with an independently scrollable operand list — the action row stays in view regardless of how long your operand list is.

Workpaper saves target the correct task: Fixed an issue where a queued autosave could be sent to the wrong task when navigating quickly between tasks while the memo panel stayed mounted.
PDF navigation for bbox-less citations: Clicking a citation that has a page number but no drawn bounding box now correctly navigates the PDF to that page.
Cross-page operands persist on save: Fixed an issue where cross-page Foot/Crossfoot operands were dropped when using the standalone save action.