Three bugs in the RAG embedding pipeline, diagnosed and patched by @sbruschke
against v1.31.0 with working before/after chunk counts. All three are
root-cause contributors to #388.
1. scanAndSyncStorage queued every file under /storage/zim/ for embedding,
including Kiwix's generated kiwix-library.xml. EmbedFileJob rejected it
with "Unsupported file type" and the default 30-attempt retry policy
kept it looping on every sync, flooding nomad_admin logs. Now gated on
determineFileType(filePath) !== 'unknown'.
2. hasMoreBatches compared zimChunks.length (section-level chunk count
under the 'structured' strategy) against ZIM_BATCH_SIZE (an article
limit). Because articles emit multiple sections, the two are never
equal for real archives and processing silently stopped after the
first 50 articles. Now gated on articlesInBatch >= ZIM_BATCH_SIZE.
3. extractStructuredContent walked only direct children of <body>, so any
ZIM that wraps content in a container div (Devdocs, Wikipedia,
FreeCodeCamp, React docs, etc.) produced zero sections and silently
embedded zero chunks while reporting success. Now walks the full DOM
via $('body').find('h2, h3, h4, p, ul, ol, dl, table'), with a
whole-body text fallback when the selector walk yields nothing.
Before/after chunk counts confirmed by @sbruschke on v1.31.0:
devdocs_en_git 0 -> 916
devdocs_en_react 0 -> 481
devdocs_en_node 0 -> 423
libretexts_en_eng 1 -> 35 (climbing)
Wikipedia resumed progressing normally through its 6M articles.
Closes#718Closes#719Closes#720Closes#388
Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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