Footnotes/endnotes are hidden in the rendered page via `display: none`,
but TTS builds its blocks from its own document. For background
sections that document is raw XHTML loaded via `section.createDocument()`
without the page layout styles, so the footnotes were read aloud.
- `createRejectFilter` gains an `attributeTokens` option to match
`aside[epub:type~="footnote|endnote|note|rearnote"]` (value-token
match, like CSS `[attr~="x"]`), so footnotes are detectable on raw
documents that lack the `epubtype-footnote` class.
- `TTSController` adds the footnote selectors to its reject filter.
- `getBlocks()` (foliate-js) skips the subtree of any block-level
element the node filter rejects, ending the preceding block before
it so footnote text doesn't leak in.
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Huang Xin
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