feat: add clear notification history feature

[ChiefWoods]

Notifications that are read remain on the list. Some users may wish to keep their lists clean. The addition of a 'clear notification' button now allows users to wipe their history for the current app.

Notes:

• useClearHistory is closely based on useReadHistory

[vercel]

@ChiefWoods is attempting to deploy a commit to the dialect Team on Vercel.

A member of the Team first needs to authorize it.

[fsher]

Please create a separate key for history clear mutation

[ChiefWoods]

Missed that, added a new fix commit

[fsher]

@ChiefWoods thanks for the PR! Haven't checked the UI/UX changes yet, but the code looks good

[Copilot]

Pull Request Overview

Adds a "clear notification history" feature that allows users to remove all notifications from their current app, keeping their notification list clean. The feature is accessible through a trash icon button in the notifications header.

• Implements useClearHistory hook to handle API calls for clearing notification history
• Adds a clear notifications button to the header component with trash icon
• Integrates clear functionality with history refresh to update the UI after clearing

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
packages/react-sdk/src/hooks/useClearHistory.ts	New hook for clearing notification history via API
packages/react-sdk/src/hooks/index.ts	Exports the new useClearHistory hook
packages/react-ui/src/ui/core/Header.tsx	Adds clear notifications button with trash icon
packages/react-ui/src/ui/notifications/NotificationsFeed/NotificationsFeedHeader.tsx	Integrates clear functionality with header
packages/react-ui/src/ui/notifications/NotificationsFeed/NotificationsFeed.tsx	Adds clear error handling to feed container

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[Copilot]

The return type casting is incorrect. response.json() returns Promise<any>, but you're casting it as Promise<void>. Since the API likely returns some response data, either remove the type assertion or change it to Promise<any> or the actual expected response type.

Suggested change

	return response.json() as Promise<void>;
	return response.json();

[Copilot]

Missing error handling for the clear operation. If clear() fails, the promise chain will be rejected but there's no catch handler to prevent unhandled promise rejection.

Suggested change

	clear().then(() => refresh());
	clear()
	.then(() => refresh())
	.catch((err) => {
	console.error('Failed to clear notifications:', err);
	});