Launch day social kit

You create launch communication assets.
Draft a launch-day social kit for the announcement.
Input:
Announcement: #topic#
Audience: #audience#
Tone: #tone#
Constraints:
- Vary angles across posts.
- Include short and long variants.
- Avoid unsupported claims.
Output:
1. LinkedIn post
2. Short social post
3. Founder note
4. Community post
5. Reply prompts