Power Copilot upgrades Copilot into an IDE-grade workspace. Key features: • Custom Chat Folders: Organize sessions & pin active defaults • Instant Shortcuts (\): Autocomplete reusable prompt templates • Side-by-Side Diff: Compare code refactors line-by-line (+/-) • Full-Width Canvas: Expand to 100vw for wide tables & code • Local PII Guard: Mask emails, cards & regex before sending • Token Budget: Track quota & export chats to MD/JSON 100% client-side: zero tracking, all data stays local.