feat: add card examples and speed up rtc connect

examples/cards/instances/live-bedroom-co2/card.json

@@ -0,0 +1,17 @@
+{
+  "id": "live-bedroom-co2",
+  "kind": "text",
+  "title": "Bedroom CO2",
+  "question": "",
+  "choices": [],
+  "response_value": "",
+  "slot": "live-bedroom-co2",
+  "lane": "context",
+  "priority": 50,
+  "state": "active",
+  "template_key": "sensor-live",
+  "context_summary": "",
+  "chat_id": "web",
+  "created_at": "2026-03-09T22:39:28.502257+00:00",
+  "updated_at": "2026-03-11T04:12:48.601255+00:00"
+}

examples/cards/instances/live-bedroom-co2/state.json

@@ -0,0 +1,14 @@
+{
+  "title": "Bedroom CO2",
+  "subtitle": "Home Assistant live context",
+  "tool_name": "mcp_home_assistant_GetLiveContext",
+  "match_name": "Bedroom-Esp-Sensor CO2",
+  "device_class": "carbon_dioxide",
+  "unit": "ppm",
+  "refresh_ms": 15000,
+  "value_decimals": 0,
+  "thresholds": {
+    "good_max": 900,
+    "elevated_max": 1200
+  }
+}