Refactor sensor ID usage and types, add CO2 metrics, update docs

- Standardize on `sensor.sensor_id` throughout components and stores -
Add average and max CO2 metrics to sensor store and HomeView - Improve
type safety for sensors, actions, and API calls - Update AGENTS.md with
repository guidelines - Refine settings store types and utility
functions - Add WindowWithAuth interface for auth store access - Minor
bug fixes and code cleanup

src/views/HomeView.vue

@@ -22,6 +22,8 @@
           :content="websocketStore.isConnected ? 'Connected' : 'Disconnected'"
         />
         <MetricCard title="Average Usage" :content="averageEnergyUsage" details="kWh" />
+        <MetricCard title="Average CO2" :content="averageCO2" details="ppm" />
+        <MetricCard title="Max CO2" :content="maxCO2" details="ppm" />
         <GraphMetricCard
           title="Real-time Energy"
           :content="currentEnergyValue"
@@ -29,18 +31,6 @@
           :trend-data="energyStore.energyHistory.slice(-8)"
           trend-direction="neutral"
         />
-        <GraphMetricCard
-          title="Current Knowledge"
-          content="86%"
-          :trend-data="[203, 78, 80, 82, 142, 85, 85, 86]"
-          trend-direction="down"
-        />
-        <GraphMetricCard
-          title="Knowledge Gain"
-          content="+34%"
-          :trend-data="[20, 25, 28, 30, 32, 33, 34, 34]"
-          trend-direction="neutral"
-        />
       </div>
       <div>
         <RealtimeEnergyChartCard title="Month" />
@@ -66,11 +56,13 @@ import SensorConsumptionTable from '@/components/cards/SensorConsumptionTable.vu
 import RoomMetricsCard from '@/components/cards/RoomMetricsCard.vue'
 import AirQualityCard from '@/components/cards/AirQualityCard.vue'
 import { useEnergyStore } from '@/stores/energy'
+import { useSensorStore } from '@/stores/sensor'
 import { useSettingsStore } from '@/stores/settings'
 import { computed, onMounted, onUnmounted } from 'vue'
 import { useWebSocketStore } from '@/stores/websocket'
 
 const energyStore = useEnergyStore()
+const sensorStore = useSensorStore()
 const websocketStore = useWebSocketStore()
 const settingsStore = useSettingsStore()
 
@@ -83,6 +75,14 @@ const averageEnergyUsage = computed(() => {
   return energyStore.averageEnergyUsage.toFixed(2)
 })
 
+const averageCO2 = computed(() => {
+  return Math.round(sensorStore.averageCO2Level)
+})
+
+const maxCO2 = computed(() => {
+  return Math.round(sensorStore.maxCO2Level)
+})
+
 onMounted(() => {
   settingsStore.initialize()