Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

apps/desktop/src/store/power.ts

@@ -0,0 +1,30 @@
+/**
+ * AC ↔ battery mirror of the main process's powerMonitor.
+ *
+ * Backstop polls are already event-demoted and visibility-gated; battery is
+ * the third gate — on battery their cadence stretches (×4) so a laptop
+ * running Hermes in the background isn't spending its charge on safety-net
+ * refreshes. Live streaming and event-driven refreshes are untouched: this
+ * only slows timers whose job is catching what a degraded socket missed.
+ *
+ * Imported for its side effect from `main.tsx` (same pattern as
+ * store/active-work).
+ */
+
+import { atom } from 'nanostores'
+
+export const $onBattery = atom<boolean>(false)
+
+/** Multiply a backstop poll interval by this on battery. */
+export const BATTERY_POLL_MULTIPLIER = 4
+
+export function batteryPollInterval(intervalMs: number, onBattery: boolean): number {
+  return onBattery ? intervalMs * BATTERY_POLL_MULTIPLIER : intervalMs
+}
+
+if (typeof window !== 'undefined') {
+  const desktop = window.hermesDesktop
+
+  void desktop?.getOnBattery?.().then(onBattery => $onBattery.set(onBattery))
+  desktop?.onBatteryChanged?.(onBattery => $onBattery.set(onBattery))
+}