Split points by documents

[shadowwwind]

Summary by CodeRabbit

• New Features

  • Added a "Summary Style" setting in Appearance to choose Document‑categorized or Unified point lists; selection is persisted and selectable in Settings.
  • Popup now supports two display modes: unified list or document‑categorized view with alphabetical document index, per‑document sections, counts, and a "documents without points" area.

• Style

  • Updated popup layout and styling for document headers, index summaries, and list presentation; improved dark‑mode coverage.

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