rUrU516/dsh-quicktime-player

Sidebar video player for DSH: it registers its own right-sidebar tab type, so any video opened through the harness — the Files tab, a chat file reference, another sidebar plugin's file tree — lands in this player. Bytes stream over a Host HTTP Range route (with a tokenized loopback source so the progress bar can actually be scrubbed inside the desktop app), and the player adds wheel zoom, drag pan, frame stepping, speed and volume popovers, and a built-in guide that points at every control.