Write a Product Launch Narrative Arc

Write a product launch narrative arc from the following inputs:

Product or feature: [NAME]
Launch date or window: [DATE]
Primary audience: [AUDIENCE]
Problem you solve: [PROBLEM]
Proof you can cite: [METRICS, CUSTOMERS, DEMOS]
Competitive alternative customers use today: [ALTERNATIVE]
Channels for the launch: [EMAIL, BLOG, WEBINAR, IN-APP, ADS]
Claims you must not make: [RESTRICTED CLAIMS]
Brand voice: [VOICE]

Requirements:
1. Build a narrative arc with setup, tension, turning point, proof, and invitation to try.
2. Produce channel-ready summaries: homepage blurb, email theme, blog angle, and social teaser outline.
3. Keep claims tied to the provided proof. Mark anything that needs legal or product review.
4. Differentiate against the stated alternative without trash talk or invented competitor flaws.
5. Include a day-of message order so channels reinforce rather than collide.
6. Add a post-launch follow-up beat for week one (education, objection handling, social proof).
7. Stay AdSense-safe and practical. No hype that overpromises outcomes.
8. End with a checklist of assets still missing before launch.