Update the EPUB highlighting cache key to include aligned word texts, ensuring
that changes in alignment or word content invalidate stale cached spans even if
word counts remain unchanged. Clear the word-region cache when rendered text
maps are replaced or reset, preventing incorrect highlights after remapping.
Also add locale tracking to HTML sentence highlighting state to support
language-aware word segmentation during alignment.
Replace EPUB-specific word highlight mapping with shared token-sequence alignment
logic used by HTML and PDF viewers. Remove bespoke alignment code and tests in
favor of a single primitive (`locateAlignmentWordSpans`) that robustly maps
spoken words to rendered text regions, tolerant of transcription and formatting
differences. Update EPUB highlighting to cache per-segment word-region spans for
efficient re-use. Add unit tests for the new alignment logic.
Refactor EPUB and HTML word highlighting to use a shared, position-preserving
text normalization pipeline for mapping TTS alignment offsets to DOM positions.
Replace the previous fuzzy token-matching logic with a direct char→DOM map
based on the canonical "audio" text form, ensuring highlights stay in sync
across languages and with Unicode-aware hyphenation handling.
- Add `highlight-char-map.ts` for shared normalization logic
- Update normalization to handle Unicode hyphenation consistently across
compute, client, and shared layers
- Remove unused fuzzy token mapping and cache logic from EPUB highlighting
- Update tests for new highlight mapping and normalization behavior
BREAKING CHANGE: Removes legacy fuzzy token-based word highlight mapping in favor of direct char offset mapping; highlight cache and tokenization APIs are removed.
Update GitHub Actions workflows to latest action versions and improve pnpm usage by introducing per-package workspace configs. Add docs-site/pnpm-workspace.yaml and update Dockerfile/package.json for better monorepo support. Upgrade dependencies across main and docs-site packages for compatibility and security. Refine TypeScript types and hooks for improved type safety and maintainability.
