Add copy and clear controls for chat feed entries

[pappensex]

Summary

• add clipboard helper and clear action for the chat feed
• show per-message copy control with short copied feedback
• style new feed controls including ghost buttons

Testing

• npm run lint

---

Codex Task

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Preview	Comments	Updated (UTC)
transzendenz	Error			Nov 20, 2025 3:33am
yoni-app	Error			Nov 20, 2025 3:33am

[vercel]

Deployment failed with the following error:

The `vercel.json` schema validation failed with the following message: should NOT have additional property `output`

Learn More: https://vercel.com/docs/concepts/projects/project-configuration

[Copilot]

Pull Request Overview

This PR adds user-friendly copy and clear functionality to the chat feed interface. Users can now copy individual messages to the clipboard with visual feedback and clear the entire conversation history.

Key changes:

• Implements per-message clipboard functionality with "Kopiert!" confirmation feedback
• Adds a "Verlauf leeren" button to clear the entire chat feed
• Introduces ghost button styling for subtle secondary actions

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
app/page.tsx	Adds copiedId state, handleCopy and handleClearFeed functions, and updates feed UI with copy controls and clear button
app/globals.css	Adds styling for ghost buttons, item header layout, and feed text formatting

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The setTimeout callback is not cleaned up if the component unmounts or if another copy action occurs before the timeout completes. Store the timeout ID and clear it in a cleanup function or when a new copy is initiated to prevent potential memory leaks and stale state updates.

[Copilot]

The ghost button hover state only changes border color, which may not provide sufficient visual feedback for users with low vision or color blindness. Consider also adding a background color change or other visual indicator on hover.

Suggested change

	border-color: rgba(255, 255, 255, 0.35);
	border-color: rgba(255, 255, 255, 0.35);
	background: rgba(255, 255, 255, 0.08);