- ProjectHeader component replaces the headerButtons JSX in context; it
owns the export menu and share panel state.
- useShareLink (share status/enable/revoke/copy) and useSharedView
(?share= read-only view, now used directly by the router).
- utils/projectExport: HTML/Markdown/DOCX download and print-to-PDF.
- AuthStatus component replaces the authStatus JSX in context.
- Pages import wordStudy helpers directly instead of via context.
- Remove dead copyPronunciationGuide (PronunciationPage has its own).
- Tests: Markdown export, enabling a share link, the ?share= view.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
