Delivered: A fully functional local PDF utility for Windows with Extract, Split, Merge, and Convert-to-Images modes, settings persistence, and a copy-and-review workflow.

Key accomplishments:
- Secure Electron 34 + Svelte 5 app shell with contextBridge IPC and drag-drop file input
- PDF operations (Extract, Split, Merge) on Worker Threads with timestamped output subfolders
- PDF-to-image conversion (PNG/JPEG, 72-300 DPI) with live progress via pdfjs-dist v4
- Copy-and-Next review workflow with clipboard, keyboard shortcuts, and back navigation
- Settings persistence (electron-conf): output path, auto-open toggle, per-mode last-used values

See .planning/MILESTONES.md for full details.