Initial release: Social Brand Voice guide creator for social media.

- Define brand tone, vocabulary, writing rules, and content examples for consistent, on-brand posts.
- Covers 4 voice dimensions, a tone spectrum, vocabulary do's/don'ts, and platform-specific adaptations.
- Provides "before/after" content examples and a quick reference card for teams.
- Accepts prompts like brand voice, tone of voice, brand guide, or voice guide to generate tailored outputs.