0.10.0

Added

• Read along — pairs an EPUB with its matching audiobook and shows the
  current chapter's text in a side panel while you listen. A new Read
  along button in the book view opens it (or prompts to pick the ebook
  file if none was found automatically); a background pass checks the whole
  library for matches over time, powering a new Has ebook library
  filter and a card badge. The panel auto-advances to the chapter matching
  what's playing when confident (exact chapter-count match, or proportional
  position as a weaker signal — never a wrong guess), and estimates your
  paragraph position within that chapter from how far through the audio
  chapter you are. Word-level highlighting is a further-out idea — this is
  the "even without it, showing the matching chapter is valuable" version
  from the roadmap.
  • New src/main/epub.js: a hand-rolled EPUB reader (ZIP central-directory
    parsing + narrow container.xml/OPF/NCX/nav.xhtml extraction), no new
    dependency. Handles nested/fragment-split tables of contents,
    percent-encoded paths, and both EPUB2 and EPUB3 conventions; chapter
    text is extracted safely in the renderer via DOMParser, not
    main-process regex.
  • New src/main/ebook-pairing.js: on-demand (not scan-time) folder-
    proximity matching, tuned against a real-data dry run of this library.
  • Verified with a 32-check synthetic EPUB harness (real generated
    fixtures covering nested TOCs, both EPUB eras, malformed markup, and a
    simulated DRM failure) before ever touching real files.