feat: one gateway port with path-mounted frontends, markdown chat, collapsible sidebars

src/beaver_gateway/cli.py

@@ -47,9 +47,10 @@ from beaver_gateway.core.auth import TokenStore
 from beaver_gateway.core.bus import EventBus
 from beaver_gateway.core.conversations import Conversations
 from beaver_gateway.core.gateway_tools import build_tool_server
-from beaver_gateway.core.registry import AgentRegistry, McpRegistry
+from beaver_gateway.core.registry import AgentRegistry, Gateway, McpRegistry
 from beaver_gateway.core.sessions import SessionPool
 from beaver_gateway.frontends.base import GatewayRuntime
+from beaver_gateway.frontends.root import build_root_app
 from beaver_gateway.mcp.internal_app import build_internal_app
 from beaver_gateway.settings import Settings
 from beaver_gateway.storage import Database, PostgresSessionStore, Usage, append_usage
@@ -188,6 +189,7 @@ async def _async_main() -> None:
             conversations=conversations,
             bus=bus,
             pool=pool,
+            public_url=gateway.public_url.rstrip("/") if gateway.public_url else None,
         )
 
         for fe in gateway.frontends:
@@ -219,10 +221,24 @@ async def _async_main() -> None:
             tg.create_task(pool.reap_loop())
             if internal_app is not None:
                 tg.create_task(_serve_internal_mcp(internal_app, settings=settings))
+            tg.create_task(_serve_root(gateway))
             for fe in gateway.frontends:
                 tg.create_task(fe.serve())
 
 
+async def _serve_root(gateway: Gateway) -> None:
+    app = build_root_app(gateway.frontends)
+    config = uvicorn.Config(app, host=gateway.host, port=gateway.port, log_level="info")
+    _log.info(
+        "gateway on http://%s:%d - %s",
+        gateway.host,
+        gateway.port,
+        ", ".join(fe.path for fe in gateway.frontends if fe.path)
+        or "no http frontends",
+    )
+    await uvicorn.Server(config).serve()
+
+
 def _build_internal_mcp(
     mcps: list[McpServerT], *, settings: Settings
 ) -> tuple[Starlette | None, dict[str, str], dict[str, FastMCP]]: