license switch agpl -> busl1, sprints work, new product advisories

docs/technical/testing/competitor-parity-testing.md

@@ -40,7 +40,7 @@ All quick set images plus:
 - .NET 8.0-alpine
 - postgres:16 (known vulnerabilities)
 - wordpress:6.5 (complex application)
-- redis:7-alpine
+- valkey/valkey:7.2-alpine (Redis-compatible)
 - Multi-layer image (test depth)
 
 ## Metrics Collected

docs/technical/testing/testkit-usage-guide.md

@@ -282,7 +282,7 @@ public class CacheTests : IClassFixture<ValkeyFixture>
 - `ValkeyFixture` - xUnit class fixture
 - `ConnectionString` - Redis connection string (host:port)
 - `Host`, `Port` - Connection details
-- Uses `redis:7-alpine` image (Valkey-compatible)
+- Uses `valkey/valkey:7.2-alpine` image (Redis-compatible)
 
 ---