Write a Launch Day Checklist Copy Pack

Write a launch day checklist copy pack from the following inputs:

Product or feature: [NAME]
Launch date and timezone: [DATE + TZ]
Audience: [WHO CARES]
Channels in scope: [EMAIL, SITE BANNER, IN-APP, PRESS, SOCIAL]
Key message: [ONE SENTENCE]
Support plan: [STATUS PAGE, FAQ, SLACK]
Do-not-say list: [CLAIMS TO AVOID]

Requirements:
1. Produce checklist items with owner role and ready-to-paste copy where relevant.
2. Cover T-24h, T-0, and T+2h checkpoints.
3. Keep claims honest. Respect the do-not-say list.
4. Include a short incident language pack if something breaks (status, apology, next update time).
5. Prefer concise bullets over long essays.

Deliverables:
1. Launch day checklist with timing, owner, and status checkbox language.
2. Copy snippets for banner, email subject/body outline, and in-app notice.
3. Incident language pack (3 severity levels) with update cadence.