Mark 16 books with 1 passage as failed (need re-OCR)

Add source_url for Archive.org links

Re-ingested mixed-language texts with transliteration cleaning

Fix: all 307 books properly classified, zero UNCLASSIFIED

Publication type reclassification (17 types)

Phase 7: 228 books, 38,300 passages — Sukhmani, Nitnem, Bhai Nand Lal, Bachitar Natak added

Phase 6: 209 books, 36,648 passages — Gurus 2-9 added

Add publication_type field (book/journal/poetry/biography/etc)

Phase 5: 169 books, 33,877 passages — Kabir, Nanak, Rumi, Bhagats, reform, journals

Phase 4: 91 books, 25K passages — Kabir, Rumi, Namdharis, Punjab Crisis, journals

Update DB: 36 completed books, SGGS author attribution fix

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