Add Starlight documentation site with diataxis structure
14 content pages across four diataxis categories:
- Getting Started: introduction, installation, quick-start tutorial
- Understanding Apollo USB: signal architecture, PCM frame structure, AGC integration
- How-To Guides: tuning parameters, test signals, voice audio, AGC bridge, PCM telemetry
- Reference: block reference (all 16 blocks), constants, protocol specification
Includes Mermaid diagram support via rehype-mermaid with client-side
rendering, dark theme, Pagefind search index, and edit-on-GitHub links.
Ryan Malloy
12fb284d5f
