feat(host-agent): mount /mcp + surface MCP status in console

apps/device-host-agent/host_agent/web/app.py

@@ -24,6 +24,8 @@ from host_agent.devices import register_local_device, unregister_local_device
 from host_agent.history import ConsoleHistoryStore
 from host_agent.identity import HostIdentityStore
 from host_agent.local_account import LocalAccountStore
+from host_agent.mcp_lock import McpBusyTracker
+from host_agent.mcp_token import McpTokenStore
 from host_agent.status import AgentStatusTracker
 from host_agent.web.auth import (
     SessionManager,
@@ -31,6 +33,7 @@ from host_agent.web.auth import (
     attempt_login,
     change_password,
 )
+from host_agent.web.mcp_auth import BearerAuthMiddleware
 from storage.device_config import DeviceConfigStore
 from storage.task_metadata import TaskMetadataStore
 from storage.timeline import Timeline
@@ -223,6 +226,9 @@ def create_console_app(
     metadata_store: TaskMetadataStore | None = None,
     timeline: Timeline | None = None,
     executor: AssignmentExecutor | None = None,
+    mcp_server: Any = None,
+    mcp_token_store: McpTokenStore | None = None,
+    mcp_busy_tracker: McpBusyTracker | None = None,
 ) -> FastAPI:
     app = FastAPI(title="Host Agent Console")
     cookie_secure = config.console_bind_host not in _LOOPBACK_BIND_HOSTS
@@ -231,6 +237,18 @@ def create_console_app(
     if cancel_task is None and host_client is not None:
         cancel_task = host_client.cancel_task
     submission_available = submit_self_task is not None
+    mcp_mounted = mcp_server is not None and mcp_token_store is not None
+    if mcp_mounted:
+        from starlette.applications import Starlette
+        from starlette.middleware import Middleware
+
+        mcp_asgi = mcp_server.streamable_http_app()
+        authed = Starlette(
+            routes=[],
+            middleware=[Middleware(BearerAuthMiddleware, token_store=mcp_token_store)],
+        )
+        authed.router.mount("/", mcp_asgi)
+        app.mount("/mcp", authed)
 
     def _running_devices() -> list[dict[str, str]]:
         return [
@@ -340,6 +358,10 @@ def create_console_app(
             for d in manager.list_devices()
         ]
         texts = _dashboard_texts(snapshot=snapshot)
+        mcp_endpoint = "/mcp" if mcp_mounted else None
+        mcp_busy_devices = (
+            mcp_busy_tracker.busy_device_ids() if mcp_busy_tracker is not None else []
+        )
         return _render(
             "dashboard.html",
             title="Status",
@@ -347,6 +369,8 @@ def create_console_app(
             identity=identity,
             devices=devices,
             config=config,
+            mcp_endpoint=mcp_endpoint,
+            mcp_busy_devices=mcp_busy_devices,
             **texts,
         )
 
@@ -375,7 +399,18 @@ def create_console_app(
             }
             for device in manager.list_devices()
         ]
-        return JSONResponse({"status": snapshot, "devices": devices})
+        return JSONResponse(
+            {
+                "status": snapshot,
+                "devices": devices,
+                "mcp_endpoint": "/mcp" if mcp_mounted else None,
+                "mcp_busy_devices": (
+                    mcp_busy_tracker.busy_device_ids()
+                    if mcp_busy_tracker is not None
+                    else []
+                ),
+            }
+        )
 
     @app.get("/devices", response_class=HTMLResponse)
     async def devices_page(

apps/device-host-agent/host_agent/web/templates/dashboard.html

@@ -20,6 +20,24 @@
       <p id="current-assignment">{{ assignment_text }}</p>
       <p id="current-progress">{{ progress_text }}</p>
     </section>
+    <section>
+      <h2>MCP</h2>
+      <table>
+        <tbody>
+          <tr>
+            <td>MCP</td>
+            <td>
+              {% if mcp_endpoint %}
+                endpoint <code>{{ mcp_endpoint }}</code>;
+                {% if mcp_busy_devices %}busy: {{ mcp_busy_devices|join(", ") }}{% else %}idle{% endif %}
+              {% else %}
+                not configured
+              {% endif %}
+            </td>
+          </tr>
+        </tbody>
+      </table>
+    </section>
     <section>
       <h2>Devices</h2>
       <table>