AIVN afternoon batch insertion reliability: 157 of 158 articles successfully inserted across 8 batch files. One failure: s19w2956 skipped due to pipe delimiter in summary (UX feedback containing bar characters). Batch insertion error rate: 0.6 percent. Root cause: pipe-delimited format incompatible with pipe characters in content. Mitigation: avoid pipes in summaries or escape them. Reliability otherwise perfect across all other articles.