fix(desktop): stop idle renderer animation loops

apps/desktop/electron/main.ts

@@ -377,9 +377,9 @@
 ipcMain.handle('hermes:get-remote-display-reason', () => REMOTE_DISPLAY_REASON)
 
 // Keep the renderer running at full speed while the window is in the background
-// or occluded. The chat transcript streams to screen through a
-// requestAnimationFrame-gated flush; Chromium pauses rAF (and clamps timers)
-// for backgrounded/occluded renderers, so without these the live answer stalls
+// or occluded. The chat transcript streams to screen through a bounded timer
+// flush; Chromium clamps timers for backgrounded/occluded renderers, so without
+// these the live answer stalls
 // whenever the window loses focus (switching to your editor mid-turn, detached
 // devtools, another window covering it) and only paints on refocus or refresh.
 // `backgroundThrottling: false` on the BrowserWindow covers the blurred case;
@@ -4939,6 +4939,8 @@
 function getWindowState(win = mainWindow) {
   return {
     isFullscreen: Boolean(win?.isFullScreen?.()),
+    isMinimized: Boolean(win?.isMinimized?.()),
+    isVisible: Boolean(win?.isVisible?.()),
     nativeOverlayWidth: getNativeOverlayWidth(),
     windowButtonPosition: getWindowButtonPosition()
   }
@@ -8427,8 +8429,12 @@
     }
   })
 
-  win.on('enter-full-screen', () => sendWindowStateChanged(true))
-  win.on('leave-full-screen', () => sendWindowStateChanged(false))
+  win.on('enter-full-screen', () => sendWindowStateChanged(true, win))
+  win.on('leave-full-screen', () => sendWindowStateChanged(false, win))
+  win.on('minimize', () => sendWindowStateChanged(undefined, win))
+  win.on('restore', () => sendWindowStateChanged(undefined, win))
+  win.on('hide', () => sendWindowStateChanged(undefined, win))
+  win.on('show', () => sendWindowStateChanged(undefined, win))
 
   wireCommonWindowHandlers(win, zoomWiringForWindowKind('chat'))
 
@@ -8510,6 +8516,10 @@
   // traffic lights hide/show independently of the primary.
   win.on('enter-full-screen', () => sendWindowStateChanged(true, win))
   win.on('leave-full-screen', () => sendWindowStateChanged(false, win))
+  win.on('minimize', () => sendWindowStateChanged(undefined, win))
+  win.on('restore', () => sendWindowStateChanged(undefined, win))
+  win.on('hide', () => sendWindowStateChanged(undefined, win))
+  win.on('show', () => sendWindowStateChanged(undefined, win))
 
   wireCommonWindowHandlers(win, zoomWiringForWindowKind('chat'))
 
@@ -8898,9 +8908,9 @@
     show: false,
     backgroundColor: getWindowBackgroundColor(),
     // Shared with the secondary session windows (chatWindowWebPreferences) so
-    // both keep `backgroundThrottling: false` — the chat transcript streams via
-    // a requestAnimationFrame-gated flush that Chromium pauses for blurred
-    // windows, stalling the live answer until refocus. See session-windows.ts.
+    // both keep `backgroundThrottling: false` — the chat transcript uses a
+    // bounded timer flush that Chromium clamps for blurred windows, stalling
+    // the live answer until refocus. See session-windows.ts.
     webPreferences: chatWindowWebPreferences(PRELOAD_PATH)
   })
 
@@ -8968,6 +8978,10 @@
   mainWindow.on('enter-full-screen', () => sendWindowStateChanged(true))
   mainWindow.on('will-leave-full-screen', () => sendWindowStateChanged(false))
   mainWindow.on('leave-full-screen', () => sendWindowStateChanged(false))
+  mainWindow.on('minimize', () => sendWindowStateChanged())
+  mainWindow.on('restore', () => sendWindowStateChanged())
+  mainWindow.on('hide', () => sendWindowStateChanged())
+  mainWindow.on('show', () => sendWindowStateChanged())
 
   // Reopen where the user left off. resized/moved settle once per drag; close is
   // the cross-platform backstop, flushed synchronously before the window is gone.
@@ -10182,7 +10196,7 @@
 
 ipcMain.handle('hermes:quick-entry:settings:set', async (_event, patch) => {
   const current = readQuickEntrySettings()
   const next = sanitizeQuickEntrySettings({
     enabled: patch?.enabled === undefined ? current.enabled : patch.enabled === true,
     shortcut: typeof patch?.shortcut === 'string' && patch.shortcut.trim() ? patch.shortcut : current.shortcut
   })

apps/desktop/electron/session-windows.test.ts

@@ -193,8 +193,8 @@ test('registry trims the session id before keying', () => {
 
 test('chatWindowWebPreferences disables background throttling so streaming paints while blurred', () => {
   // Regression: secondary session windows used to omit this flag, so a streamed
-  // answer stalled until the window regained focus (Chromium pauses the
-  // requestAnimationFrame-gated transcript flush for backgrounded windows).
+  // answer stalled until the window regained focus (Chromium clamps the
+  // transcript flush timer for backgrounded windows).
   const prefs = chatWindowWebPreferences('/tmp/preload.cjs')
 
   assert.equal(prefs.backgroundThrottling, false)

apps/desktop/electron/session-windows.ts

@@ -17,8 +17,8 @@ const SESSION_WINDOW_MIN_HEIGHT = 620
 // false`, so a streamed answer stalled until the window regained focus.
 //
 // `backgroundThrottling: false` is load-bearing: the transcript streams to the
-// screen through a requestAnimationFrame-gated flush, which Chromium pauses for
-// blurred/occluded windows. A streaming chat app must keep painting in the
+// screen through a bounded timer flush, which Chromium clamps for blurred/
+// occluded windows. A streaming chat app must keep painting in the
 // background, so every chat window opts out. The preload path is injected
 // because it depends on the Electron entry's __dirname.
 function chatWindowWebPreferences(preloadPath: string) {

apps/desktop/src/app/pet-overlay/pet-overlay-app.tsx

@@ -433,7 +433,7 @@ export function PetOverlayApp() {
           <PetBubble />
         </div>
         <div style={{ lineHeight: 0, position: 'relative' }}>
-          <PetSprite info={info} />
+          <PetSprite info={info} pauseWhenUnfocused={false} />
 
           {/* Hearts on the popped-out pet — identical to in-window. */}
           <PetHeartField