[Bug]: /usage-limits result renders behind the Tasks row instead of showing above it first #24279

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

apps/web

Steps to reproduce

1. Open a thread on web or desktop and start a turn that has a task list, so the "Tasks" row shows above the composer.
2. While the Tasks row is visible, type /usage-limits in the composer and press Enter.

Before (only a thin strip of the result is visible above the Tasks row):

After, with the fix (the result opens fully above the Tasks row, then tucks behind it after 5 seconds):

Expected behavior

The usage-limits notice opens fully above the Tasks row so I can read it, then tucks behind the row after a few seconds like other banners.

Actual behavior

The notice is placed straight behind the Tasks row, so only a thin strip of it peeks out above the row. The result of a command I just asked for is effectively hidden.

Impact

Blocks work completely

Version or commit

main @ e340aae

Environment

macOS, Chrome (web build, same code as desktop), Codex provider

Logs or stack traces

Screenshots, recordings, or supporting files

No response

Workaround

Affects any notice the user explicitly requests (such as /usage-limits) while another banner is stacked above the composer. Applies to web and desktop. I have a fix ready (the stack opens to show the requested notice in full, then collapses after 5 seconds) and will open a PR that links this issue. Before and after videos are in the steps above.