🤖 fix: use double RAF in jumpToBottom for reliable scroll position (#887)

When switching workspaces, `jumpToBottom` was executing synchronously
before browser layout was complete. This caused scrolling to land
'almost at the bottom' instead of fully at the bottom.

The fix uses double `requestAnimationFrame` (matching
`performAutoScroll`):
- First frame: allows DOM updates to complete  
- Second frame: measures accurate `scrollHeight` after layout

`setAutoScroll(true)` is set immediately to prevent flicker of the 'jump
to bottom' button.

---

_Generated with `mux`_

Author: ammar-agent

src/browser/hooks/useAutoScroll.ts

@@ -38,10 +38,18 @@ export function useAutoScroll() {
   }, []); // No deps - ref ensures we always check current value
 
   const jumpToBottom = useCallback(() => {
-    if (contentRef.current) {
-      contentRef.current.scrollTop = contentRef.current.scrollHeight;
-      setAutoScroll(true);
-    }
+    if (!contentRef.current) return;
+
+    // Double RAF: First frame for DOM updates (async highlighting, image loads),
+    // second frame to scroll after layout is complete
+    requestAnimationFrame(() => {
+      requestAnimationFrame(() => {
+        if (contentRef.current) {
+          contentRef.current.scrollTop = contentRef.current.scrollHeight;
+        }
+      });
+    });
+    setAutoScroll(true);
   }, []);
 
   const handleScroll = useCallback((e: React.UIEvent<HTMLDivElement>) => {

src/cli/index.ts

@@ -42,7 +42,10 @@ if (subcommand === "run") {
   process.argv.splice(2, 1);
   // eslint-disable-next-line @typescript-eslint/no-require-imports
   require("./api");
-} else if (subcommand === "desktop" || (isElectron && (subcommand === undefined || isElectronLaunchArg))) {
+} else if (
+  subcommand === "desktop" ||
+  (isElectron && (subcommand === undefined || isElectronLaunchArg))
+) {
   // Explicit `mux desktop`, or Electron runtime with no subcommand / Electron launch args
   launchDesktop();
 } else {