=== `HTTP+JSON` protocol binding not supported

The xref:{cq-camel-components}::a2a-component.adoc[A2A component] supports two protocol bindings: `JSONRPC` and `HTTP+JSON`.
Only the `JSONRPC` binding works with the default Quarkus HTTP server (Vert.x / `platform-http`).

The `HTTP+JSON` binding uses A2A custom-method paths that contain colons, such as `/message:send`.
Vert.x Web does not support colon characters in URI path segments, causing these routes to fail.

