Epic: [ACP] Transport hardening #936
Description
Objective
Complete WebSocket transport, add HTTP authentication, and provide agent discovery manifest.
Scope
- Complete WebSocket transport and wire into acp_router
- Add bearer token authentication for HTTP endpoints
- Create agent discovery manifest (.well-known/acp.json or equivalent)
Acceptance Criteria
- WebSocket transport functional and tested
- HTTP endpoints require bearer auth when configured
- Discovery manifest served at well-known path
Dependencies
Blocked by: #917 — WebSocket transport and auth handler depend on ACP SDK types. Must complete SDK upgrade and schema compliance before implementing transport layer changes.