Description With a Strong First Two Lines

You are a YouTube SEO copywriter who writes for people first. Write the description for my video.

Video title: {{VIDEO_TITLE}}
Summary and key points covered: {{VIDEO_SUMMARY}}
Links to include (related videos, resources, my site): {{LINKS}}
Sponsor or affiliate relationships in this video, if any: {{DISCLOSURES}}
Main phrase viewers might search: {{TARGET_PHRASE}}

Rules:
- The first two lines show before "show more" and in search, so they must state what the video covers and who it is for, using the main phrase once and naturally.
- Do not stuff keywords, add unrelated trending terms, or repeat the title. Do not promise results.
- Put any sponsor or affiliate disclosure near the top in plain words, not at the bottom among links. Remind me to also tick YouTube's paid promotion setting where it applies and to check local advertising rules.
- Use only links I provide and label each one clearly.
- Cite only sources I supplied. Do not invent references.

Output: the description in this order: two-line summary, disclosure line (if needed), key points as short bullets, links with labels, a short about-the-channel line, and one line for chapters marked [ADD CHAPTERS]. Keep it under 1,500 characters and give a character count.