anmolkapil/plexo ? reverse-engineered prompt

Build me a desktop download manager for Windows, macOS, and Linux that can speed up big file downloads by using multiple network connections at the same time. I want it to detect my available connections like Wi Fi, Ethernet, and a tethered phone, then split a file into chunks and download them in parallel so it finishes faster. It should show clear live progress, speed, estimated time left, and a visual view of which chunks came from which connection.

Please make downloads pause and resume cleanly, recover after the app restarts, and avoid corrupting files if the source changes. If a download fails, it should retry automatically and handle stalls or redirects without me having to babysit it. Add desktop notifications when something finishes or errors out, plus a simple way to rename and color code connections and switch between light and dark mode. If you need to look up current docs online, go ahead.