test: harden release timing-sensitive waits

packages/cli/src/agent-view/supervisor-process.test.ts

@@ -5205,7 +5205,7 @@ async function waitFor(
   predicate: () => boolean,
   subscribe?: (notify: () => void) => void,
 ): Promise<void> {
-  for (let attempt = 0; attempt < 50; attempt++) {
+  for (let attempt = 0; attempt < 500; attempt++) {
     if (predicate()) return;
     await new Promise<void>((resolve) => {
       subscribe?.(resolve);

packages/web-shell/client/components/MessageList.dom.test.tsx

@@ -1425,6 +1425,7 @@ describe('MessageList — turn collapse (DOM)', () => {
         await Promise.resolve();
       });
       await nextFrame();
+      await nextFrame();
       expect(has(c, 't1')).toBe(true);
 
       // Page 2 anchors on the now-visible t1 row while the fetch is in flight.
@@ -1445,6 +1446,7 @@ describe('MessageList — turn collapse (DOM)', () => {
         await Promise.resolve();
       });
       await nextFrame();
+      await nextFrame();
       expect(isCollapsed(c, 't1')).toBe(true);
 
       // ...and pagination is not stuck: a third load still fires.
@@ -1464,6 +1466,8 @@ describe('MessageList — turn collapse (DOM)', () => {
         resolveLoad();
         await Promise.resolve();
       });
+      await nextFrame();
+      await nextFrame();
       // ...page 4 then completes that turn's head while its tail is already
       // on screen, so it stays expanded.
       // Re-top the container: re-renders snap it to the bottom while