v0.1 Comments and basic functionality work

ROADMAP.md

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+# Roadmap
+
+## Version 0.1
+
+- Native macOS SwiftUI/PDFKit app.
+- Local PDF opening.
+- Reading controls: scrolling, zoom, fit width, fit page, page navigation, search.
+- Focused default reading mode with optional page thumbnail sidebar.
+- Highlight, underline, selection-bound comment, and free-text annotations.
+- Anchored comment popovers from newly created selected-text comments, highlights, underlines, free text, and clicked annotations.
+- Annotation list sidebar.
+- Optional comments review sidebar with grouping, collapsed filtering, replies, and navigation.
+- Save, Save As, and native macOS sharing with standard PDF annotation writing.
+- `.app` and `.dmg` build scripts.
+- Visual QA screenshots for empty, reading, popover, comments, and dark-mode states.
+
+## Version 0.2
+
+- More explicit visual selection handles for the active annotation.
+- Better undo/redo integration for annotation edits.
+- Optional author identity preferences.
+- More granular sidebar and inspector layout memory for complex multi-window workflows.
+- Fully standards-compliant reply-thread relationships through a lower-level PDF writer if PDFKit continues rejecting object-valued `/IRT`.
+- Stronger interoperability test corpus covering Preview, Acrobat Reader, and browser PDF viewers.
+- Import/export verification fixtures for existing annotated PDFs.
+
+## Later
+
+- Optional OCR for scanned readings.
+- Optional citation metadata display.
+- Optional AI summaries or question prompts.
+- iPad companion app.
+- LMS integrations.