Integrate embedded WhatsApp and text channels (#89)

* Integrate embedded WhatsApp and text channels

* Wire ACPX session selection through chat channels

* Address channel review feedback

* Address ACPX and WhatsApp review feedback

* Fix subprocess proxy guidance

Author: bglusman

BACKLOG.md

@@ -76,6 +76,13 @@
 - [ ] Rust client SDK for host-agent
 - [ ] Python bindings
 - [ ] CLI admin tool
+- [ ] Explore a local web channel for desktop/LAN testing that uses the same
+      identity, routing, message-envelope, artifact, and proxy policy paths as
+      Telegram, Matrix, and text channels
+- [ ] Prototype a native ACP client adapter using the `agent-client-protocol`
+      Rust crate, with Zed's `codex-acp` as the first smoke target
+- [ ] Evaluate ACP orchestrators such as AgentPool, cagent, and fast-agent as
+      recipe-backed async work backends
 - [ ] Architecture decision records (ADRs)
 
 ### Observability