Bulk Delete / "Clear Slate" Option for Brain AI Context

Details: I would love to see a feature that allows users to delete all Brain AI documents, links, and text entries at once, or via bulk checkbox selection.

Why it’s needed: When a business undergoes a major pivot or a complete rebranding, almost all previous Brain context becomes completely irrelevant. Currently, starting fresh requires individually deleting every single entry one by one, which is incredibly time-consuming.

Leaving the old data in place isn't a great option either, as it causes the workspace helpers to pull from outdated information and mix up old and new branding.

Suggested Solution: Add a "Select All" checkbox to bulk delete selected items.

Or, introduce a "Reset Brain AI / Clear Slate" button in the settings that requires typing "DELETE" to confirm, allowing users to safely purge old data and instantly start fresh with their new brand guidelines.