feat(bridge): add wifi/serial bridge runtime and UI

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_bridge_wifi_connect.py

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+"""Tests for bridge serial connect profile handling."""
+
+from __future__ import annotations
+
+import asyncio
+import sys
+from pathlib import Path
+
+ROOT = Path(__file__).resolve().parents[1]
+sys.path.insert(0, str(ROOT / "src"))
+
+
+def test_connect_bridge_profile_serial(monkeypatch):
+    from util import bridge_runtime
+
+    calls = {}
+
+    async def fake_connect_serial(profile, settings):
+        calls["profile"] = profile
+        calls["settings"] = settings
+        return True, ""
+
+    monkeypatch.setattr(bridge_runtime, "connect_bridge_serial", fake_connect_serial)
+
+    class _Settings(dict):
+        def save(self):
+            pass
+
+    settings = _Settings({"bridge_serial_port": ""})
+    profile = {
+        "transport": "serial",
+        "serial_port": "/dev/ttyUSB0",
+        "serial_baudrate": 921600,
+    }
+
+    ok, err = asyncio.run(bridge_runtime.connect_bridge_profile(profile, settings))
+    assert ok is True
+    assert err == ""
+    assert calls["profile"]["serial_port"] == "/dev/ttyUSB0"