Only show signatures in edit mode

[roiguri]

Problem

Signatures (and possibly other annotation types) are currently visible in all modes that display the PDF viewer (view, split, compress, convert). Signatures should only be visible when in edit mode, as they are editing artifacts rather than part of the original document.

Request

Filter annotations passed to <PDFViewer> in non-edit modes so that only highlights are shown (or no annotations at all, depending on preferred behavior). Signatures and text annotations should be hidden outside of edit mode.

Affected Files

• src/components/dashboard/tools/ViewTool.tsx — filter out signature/text annotations
• src/components/dashboard/tools/SplitTool.tsx — same
• src/components/dashboard/tools/CompressTool.tsx — same
• src/components/dashboard/tools/ConvertTool.tsx — same

Implementation Notes

Each tool passes annotations from the store to <PDFViewer>. Filtering to only highlight type before passing would be sufficient:

annotations={annotations.filter(a => a.type === 'highlight')}