Add a chapter (markdown original text) to an artifact from its detail
screen, deriving word/character counts from the text and splitting it into
paragraph chunks.
- MantraRepository.addChapter attaches the chapter to the artifact's latest
version (index = existing chapter count), computes word/character counts,
and persists the MantraChapter plus a MarmotInnerEvent rumor
(kind = ChapterEvent.KIND). It then splits the markdown by paragraph into
MantraChunks, each with its own index/counts and a rumor
(kind = ChunkEvent.KIND). New DAO query getChaptersByArtifactVersionId.
- New press.mantra.compose.text.Markdown helpers: wordCount, characterCount,
splitParagraphs (blank-line separated).
- ChapterEvent.build / ChunkEvent.build now take the real fields (fixing the
phantom generics); toChapterEvent / toChunkEvent tag order matches build
and fromChapterEventTemplate / fromChunkEventTemplate are added so the
event ids round-trip, mirroring the other models.
- New AddChapterScreen (route + ViewModel + UIState) with a name field and a
markdown text field plus a live "words · characters · chunks" preview,
reached from an Add Chapter button in ArtifactDetailScreen (disabled until
the artifact has a version). On success it lands on a freshly-loaded
artifact detail via popUpTo<ArtifactDetailRoute>.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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