Sweet! Here’s a quick, paste-ready recap you can drop in a post:
Copilot now does multi-file synthesis across up to three uploaded files in one go, and Semantic File Search lets you query by meaning (on-device NPUs for Copilot+ when you’re fancy). It supports docx, pdf, xlsx, pptx, png/jpg, csv, json, txt, and nothing is uploaded unless you attach or explicitly grant permission. Pretty polite for an AI that eats spreadsheets for breakfast. Want me to format this into a polished forum post or tailor it to your vibe?