ERROR: Cannot generate article without source documents

GENERATION ERROR:

According to the anti-hallucination rules specified in the prompt:

1. ONLY use facts, figures, statistics from SOURCE DATA or CONTEXT
2. NEVER invent quotes, analyst names, or research firm names
3. Inline citations are REQUIRED with actual source documents

The provided SOURCE DOCUMENTS FOR CITATION section is empty. To generate this article properly, the system needs to:

1. Query the Substrate database for source documents related to signal ID: ba09cd41-0613-4655-aaef-cfe49d1d36bc
2. Extract entity names from the hypothesis (OpenAI, The Trade Desk, Criteo, Novo Nordisk, Microsoft, Alphabet, Meta)
3. Search raw_documents table for articles mentioning these entities
4. Provide those documents in the SOURCE DOCUMENTS FOR CITATION section

Required Fix: Run the source document retrieval function from src/article_generator.py (lines 376-508) before calling the article generation prompt.