Shorten short_description to fit HuggingFace 60-char limit

Update branding: Hello World — One App to Rule Them All

Redesign HuggingFace Space with visual README, screenshots, and appearance polish

Content refresh: update README with current feature counts and new modules

Add searchable docs page and solo developer callout for HuggingFace

Refactor conversation.py into subpackage + DRY improvements

Add camera registry, browser camera streaming, and update landing page

Update README with accurate codebase stats

Add YOLO vision pipeline, about page, and LLM provider logos

Upload README.md with huggingface_hub

Initial release — Reachy Mini Hello World DevKit