gatherBlogData():
- Fetches real prices from price_observations (last 30 days) per product
- Filters transceivers by speed extracted from topic keywords
- Enriches every product with verified_prices array + has_verified_price flag
- Joins DB products with vector search results (DB first — they have real prices)
contextData injection (blog.ts):
- [PRODUCT] lines: exact standard_name, form_factor, speed, reach, connector, dBm specs, Watts
- [VERIFIED PRICE] lines: real EUR/USD price, vendor, observed date, source URL
- [NO VERIFIED PRICE IN DB]: explicit tag — LLM must not invent a number
- [NO PRODUCT DATA AVAILABLE]: fallback when DB returns nothing
fo-blog-pipeline.ts system prompt:
- DATA INTEGRITY RULES block: prices/part numbers/vendors ONLY from context
- Never approximate with ~€350 or 'typically $200-600' for specific products
- Power specs only from [PRODUCT] data or REFERENCE VALUES
STEP4 context instructions:
- Explicit rules on how to use [VERIFIED PRICE] vs [NO VERIFIED PRICE]
- Invented data = HARD FAIL in QA
STEP9 QA — 3 new hard fail checks (30, 31, 32):
- Check 30: invented prices → remove or replace with flexoptix.net reference
- Check 31: invented part numbers → remove, use class name instead
- Check 32: invented vendor names → remove if not in known list
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