docs: update SOTA data source — api2.sota.org.uk only, remove SOTLAS

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: KI7MT

docs/about/attributions.md

@@ -63,12 +63,11 @@ Portable amateur radio operations from parks and protected areas worldwide. pota
 
 ### Summits on the Air (sota-mcp)
 
-Portable amateur radio activations from mountain summits. sota-mcp uses two APIs for live spots, activation alerts, summit information, nearby summit search, and activator statistics.
+Portable amateur radio activations from mountain summits. sota-mcp queries the official SOTA API for live spots, activation alerts, summit information, and nearby summit search.
 
 - **Organisation**: Summits on the Air (SOTA)
 - **Website**: [sota.org.uk](https://www.sota.org.uk/)
-- **SOTA API**: [api2.sota.org.uk](https://api2.sota.org.uk/) — live spots and alerts
-- **SOTLAS**: [sotl.as](https://sotl.as/) by Manuel, HB9DQM — summit data, geospatial search, activator stats
+- **SOTA API**: [api2.sota.org.uk](https://api2.sota.org.uk/) — spots, alerts, summit data, region listings
 
 ### Islands on the Air (iota-mcp)
 

docs/servers/sota.md

@@ -84,12 +84,11 @@ Returns total activations, unique summits, QSO count, points, and recent activat
 
 ---
 
-## Data Sources
+## Data Source
 
-sota-mcp uses two public APIs:
+sota-mcp uses the official SOTA API exclusively:
 
-- **SOTLAS** (`api.sotl.as`) — summit data, statistics, geospatial search
-- **SOTA API** (`api2.sota.org.uk`) — live spots and alerts
+- **SOTA API** (`api2.sota.org.uk`) — spots, alerts, summit data, and region listings
 
 ---