## Summary
- **Skip files or books in a multi-book pack.** The pack review panel
gets a switch per file and a "Skip this book" switch per book, using the
shared `ToggleSwitch`. A partly skipped book shows e.g. "3 of 5 files"
in the Files column. A fully skipped book is greyed out.
- **Choose formats for a single book.** A new "Choose formats" header
toggle, next to the multi-book one, opens a format picker for a release
that has several book formats (EPUB, MOBI, PDF and so on). It has one
switch per format with file count and size. Releases with one format, or
that can't be inspected, download as before.
- **Skipped files are sent as `ignored_files`.** They are stored on the
task (including restart-safe retry) and removed before grouping and
transfer. This matters for packs because files missing from `book_plan`
would otherwise be filed by the heuristic fallback. Ignored entries
match by release-relative path, then path suffix, then unique basename.
- A pack that ends up with one book after skips keeps the titles you
reviewed instead of falling back to the searched title.
## Screenshots
<img width="1277" height="413" alt="Screenshot 2026-10-19 at 09-39-28
Shelfmark"
src="https://github.com/user-attachments/assets/c005ca4b-3dac-45dd-b2ff-d02fc0f9fcc9"
/>
<img width="1277" height="1210" alt="Screenshot 2026-10-19 at 09-40-23
Shelfmark"
src="https://github.com/user-attachments/assets/2145f3ba-e5fc-4635-9364-1790feb0c8b8"
/>
<img width="1277" height="748" alt="Screenshot 2026-10-19 at 09-39-03
Shelfmark"
src="https://github.com/user-attachments/assets/39023fac-70e3-46d8-af89-1160ebd6e415"
/>
## Test plan
- [x] `pytest` pack tests (new `drop_ignored_files` cases added)
- [x] `vitest`, `tsc`, `oxlint`, `oxfmt`, `ruff`
- [x] Manual check in the UI with a real multi-book pack
🤖 (mostly) Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Claude Sonnet 5.5 <noreply@anthropic.com>