Merge branch 'master' into feature/ext-scheduler/cron-and-interval-jobs

Resolve conflicts in AGENTS.md, pom.xml and flash-extensions/pom.xml — master
had already picked up ext-validation and ext-cache-core/caffeine (merged after
this branch was cut); union kept alongside this branch's ext-scheduler entries.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

AGENTS.md

@@ -38,7 +38,8 @@ Format: `<type>(<scope>): <short description>`
 
 Allowed scopes: `core`, `testing`, `ext-jackson`, `ext-openapi`, `ext-oidc`, `ext-routeviewer`,
 `ext-view-core`, `ext-view-jte`, `ext-view-thymeleaf`, `ext-limiter`, `ext-web-bundler`,
-`ext-mcp`, `ext-scheduler`, `ext-data-core`, `ext-data-jdbc`, `ext-data-hibernate`, `release`, `deps`, `ci`.
+`ext-mcp`, `ext-validation`, `ext-scheduler`, `ext-data-core`, `ext-data-jdbc`, `ext-data-hibernate`,
+`ext-cache-core`, `ext-cache-caffeine`, `release`, `deps`, `ci`.
 
 Examples:
 ```