fix: remove mount animation from projects announcement banner

[devin-ai-integration]

Summary

The "Teams are being renamed to projects" banner animated in on mount. This removes that animation so the banner appears instantly.

• Dropped animate-announcement-in motion-reduce:animate-none from the banner container in banner.tsx.
• Removed the now-unused @keyframes announcement-in and --animate-announcement-in from theme.css.

Link to Devin session: https://app.devin.ai/sessions/9848acc809e247a5babe9185626b98ee

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Project	Deployment	Actions	Updated (UTC)
web-foxtrot	Ready	Preview, Comment	Jul 22, 2026 5:56pm

[claude]

LGTM — trivial removal of a mount animation and its unused keyframe/variable definitions.

Extended reasoning...

Overview

This PR removes the animate-announcement-in motion-reduce:animate-none class from the projects announcement banner container (banner.tsx) and deletes the now-unused @keyframes announcement-in and --animate-announcement-in theme variable from theme.css. No logic, state, or props are touched — the component's mount/dismiss/localStorage behavior is unchanged, only a purely presentational CSS animation is removed.

Security risks

None. This touches only static CSS class names and a Tailwind theme keyframe definition. No user input, auth, or data handling is involved.

Level of scrutiny

Low. This is a cosmetic, single-purpose UI tweak confined to one non-critical banner component and a shared theme file. I confirmed via grep that announcement-in/--animate-announcement-in are not referenced anywhere else in the codebase, so removing them does not orphan any other usage.

Other factors

The diff is minimal and mechanical (class removal + dead CSS deletion), matches the PR description exactly, and there are no outstanding review comments to address.

[ben-fornefeld]

closed because it's better to have the animation in the end.