Cospas-Sarsat specification summaries moved to reference/ for internal
use only. Links updated to point to official cospas-sarsat.int site.
The extracted images remain in public/ for use in other pages.
Diátaxis-structured documentation for 406 MHz SARSAT beacon reception:
- Tutorials: signal chain walkthrough
- Guides: antenna setup, message decoding
- Reference: block API, signal format
- Explanation: Cospas-Sarsat system overview
Includes extracted images from official Cospas-Sarsat specifications (LFS).
