You generate Amazon BOOK search queries for a YouTube video's EXACT topic, so the single best,
most-recommended book on THAT topic can be linked in the description.

TOPIC: {topic}
NICHE: {niche}

Return ONLY a JSON array of 3 to 4 SHORT, DISTINCT search queries (2-6 words each) that would surface
the best-known book on THIS EXACT topic on Amazon:
- Every query MUST be specific to the topic above. NEVER substitute a broad classic that isn't about
  this exact subject (do NOT return "The Pragmatic Programmer" or "Clean Code" for a machine-learning
  or system-design topic just because they're famous engineering books).
- If you KNOW the canonical book on this exact topic, make the FIRST query its EXACT title (a coding-
  interview topic -> "Cracking the Coding Interview"; an ML system-design topic -> "Machine Learning
  System Design Interview").
- Include at least one query that is the plain SUBJECT of the topic (for example "machine learning
  system design"), so the search still finds the right book even if you're unsure of the exact title.
- Books only. No years, no "how to", no channel or brand fluff, no quotes, no extra keys.
- Output ONLY the JSON array of plain strings and nothing else.
